Rock magnetic variability of quaternary deep-sea sediments from the Bering Sea and their environmental implications
IODP Ex. 323 shipboard rock magnetic measurements of Quaternary deep-sea sediments from the Bering Sea identified a dramatic bimodal character to the sediments, alternating between sediments with strong natural magnetic remanence (NRM) and magnetic susceptibility (chi) and those with order-of-magnit...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
Lund, Steve [verfasserIn] |
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| Format: |
E-Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
2021transfer abstract |
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| Schlagwörter: |
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| Übergeordnetes Werk: |
Enthalten in: Seasonal factitious increase in serum potassium: Still a problem and should be recognised - Davis, Kayleigh R. ELSEVIER, 2014, Amsterdam [u.a.] |
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| Übergeordnetes Werk: |
volume:172 ; year:2021 ; pages:0 |
| Links: |
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| DOI / URN: |
10.1016/j.dsr.2021.103487 |
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ELV05415264X |
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| 245 | 1 | 0 | |a Rock magnetic variability of quaternary deep-sea sediments from the Bering Sea and their environmental implications |
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| 520 | |a IODP Ex. 323 shipboard rock magnetic measurements of Quaternary deep-sea sediments from the Bering Sea identified a dramatic bimodal character to the sediments, alternating between sediments with strong natural magnetic remanence (NRM) and magnetic susceptibility (chi) and those with order-of-magnitude lower values. We now generally associate the high-magnetic-intensity sediments with interglacial/interstadial times and the low-magnetic-intensity intervals are generally associated with glacial/stadial conditions. This pattern can be largely correlated among all seven IODP Ex. 323 sites. We have now completed more detailed rock magnetic measurements on selected u-channeled sediments from these sites. U-channel rock magnetic measurements indicate that the high-intensity sediments contain relatively coarser magnetic grains (sand/silt) associated with coarser siliciclastic sediments while the low-intensity sediments contain finer magnetic grains (silt) associated with finer siliciclastic sediments. We associate the coarser magnetic grains and overall coarser clastic sediments with warmer intervals when more open water conditions permit sediment flux from the continental shelves. The finer magnetic grains and associated finer clastic sediment are largely derived from sediment reworking and redeposition associated with slope processes and deep-sea contour currents when ice cover was more permanent. We have corroborated the grain size variability with magnetic hysteresis measurements and clastic grain size analysis. The clastic grain size distributions of the coarser versus finer grained sediments are significantly different; coarser grained sediments have a broad grain size distribution with 50–60 μm mean grain size, while finer grained sediments have a much more narrow grain size distribution with 15–20 μm mean grain size. The finer grain size distribution is consistent in range and mean grain size to North Atlantic deep-sea sediment deposited as drift deposits by contourite deposition (Heezen and Ruddiman, 1966; Johnson et al., 1988). The dominant magnetic mineral in all sediments is detrital magnetite. Early sediment diagenesis plays a minor role in the overall rock magnetic variability of the Bering Sea deep-sea sediments due to the overall large clastic grain size. The magnetic variability that we see in the Quaternary Bering Sea sediments appears to be comparable to other studies from this region. VanLaningham et al. (2009) attribute deposition of the Meij... | ||
| 520 | |a IODP Ex. 323 shipboard rock magnetic measurements of Quaternary deep-sea sediments from the Bering Sea identified a dramatic bimodal character to the sediments, alternating between sediments with strong natural magnetic remanence (NRM) and magnetic susceptibility (chi) and those with order-of-magnitude lower values. We now generally associate the high-magnetic-intensity sediments with interglacial/interstadial times and the low-magnetic-intensity intervals are generally associated with glacial/stadial conditions. This pattern can be largely correlated among all seven IODP Ex. 323 sites. We have now completed more detailed rock magnetic measurements on selected u-channeled sediments from these sites. U-channel rock magnetic measurements indicate that the high-intensity sediments contain relatively coarser magnetic grains (sand/silt) associated with coarser siliciclastic sediments while the low-intensity sediments contain finer magnetic grains (silt) associated with finer siliciclastic sediments. We associate the coarser magnetic grains and overall coarser clastic sediments with warmer intervals when more open water conditions permit sediment flux from the continental shelves. The finer magnetic grains and associated finer clastic sediment are largely derived from sediment reworking and redeposition associated with slope processes and deep-sea contour currents when ice cover was more permanent. We have corroborated the grain size variability with magnetic hysteresis measurements and clastic grain size analysis. The clastic grain size distributions of the coarser versus finer grained sediments are significantly different; coarser grained sediments have a broad grain size distribution with 50–60 μm mean grain size, while finer grained sediments have a much more narrow grain size distribution with 15–20 μm mean grain size. The finer grain size distribution is consistent in range and mean grain size to North Atlantic deep-sea sediment deposited as drift deposits by contourite deposition (Heezen and Ruddiman, 1966; Johnson et al., 1988). The dominant magnetic mineral in all sediments is detrital magnetite. Early sediment diagenesis plays a minor role in the overall rock magnetic variability of the Bering Sea deep-sea sediments due to the overall large clastic grain size. The magnetic variability that we see in the Quaternary Bering Sea sediments appears to be comparable to other studies from this region. VanLaningham et al. (2009) attribute deposition of the Meij... | ||
| 650 | 7 | |a Quaternary climate |2 Elsevier | |
| 650 | 7 | |a Bering sea |2 Elsevier | |
| 650 | 7 | |a Rock magnetism |2 Elsevier | |
| 650 | 7 | |a Deep sea sedimentation |2 Elsevier | |
| 700 | 1 | |a Mortazavi, Emily |4 oth | |
| 700 | 1 | |a Platzman, Ellen |4 oth | |
| 700 | 1 | |a Kirby, Matt |4 oth | |
| 700 | 1 | |a Stoner, Joe |4 oth | |
| 700 | 1 | |a Okada, Makoto |4 oth | |
| 773 | 0 | 8 | |i Enthalten in |n Elsevier Science |a Davis, Kayleigh R. ELSEVIER |t Seasonal factitious increase in serum potassium: Still a problem and should be recognised |d 2014 |g Amsterdam [u.a.] |w (DE-627)ELV023027428 |
| 773 | 1 | 8 | |g volume:172 |g year:2021 |g pages:0 |
| 856 | 4 | 0 | |u https://doi.org/10.1016/j.dsr.2021.103487 |3 Volltext |
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| 952 | |d 172 |j 2021 |h 0 | ||
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10.1016/j.dsr.2021.103487 doi /cbs_pica/cbs_olc/import_discovery/elsevier/einzuspielen/GBV00000000001651.pica (DE-627)ELV05415264X (ELSEVIER)S0967-0637(21)00026-1 DE-627 ger DE-627 rakwb eng 540 VZ 540 VZ 35.40 bkl Lund, Steve verfasserin aut Rock magnetic variability of quaternary deep-sea sediments from the Bering Sea and their environmental implications 2021transfer abstract nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier IODP Ex. 323 shipboard rock magnetic measurements of Quaternary deep-sea sediments from the Bering Sea identified a dramatic bimodal character to the sediments, alternating between sediments with strong natural magnetic remanence (NRM) and magnetic susceptibility (chi) and those with order-of-magnitude lower values. We now generally associate the high-magnetic-intensity sediments with interglacial/interstadial times and the low-magnetic-intensity intervals are generally associated with glacial/stadial conditions. This pattern can be largely correlated among all seven IODP Ex. 323 sites. We have now completed more detailed rock magnetic measurements on selected u-channeled sediments from these sites. U-channel rock magnetic measurements indicate that the high-intensity sediments contain relatively coarser magnetic grains (sand/silt) associated with coarser siliciclastic sediments while the low-intensity sediments contain finer magnetic grains (silt) associated with finer siliciclastic sediments. We associate the coarser magnetic grains and overall coarser clastic sediments with warmer intervals when more open water conditions permit sediment flux from the continental shelves. The finer magnetic grains and associated finer clastic sediment are largely derived from sediment reworking and redeposition associated with slope processes and deep-sea contour currents when ice cover was more permanent. We have corroborated the grain size variability with magnetic hysteresis measurements and clastic grain size analysis. The clastic grain size distributions of the coarser versus finer grained sediments are significantly different; coarser grained sediments have a broad grain size distribution with 50–60 μm mean grain size, while finer grained sediments have a much more narrow grain size distribution with 15–20 μm mean grain size. The finer grain size distribution is consistent in range and mean grain size to North Atlantic deep-sea sediment deposited as drift deposits by contourite deposition (Heezen and Ruddiman, 1966; Johnson et al., 1988). The dominant magnetic mineral in all sediments is detrital magnetite. Early sediment diagenesis plays a minor role in the overall rock magnetic variability of the Bering Sea deep-sea sediments due to the overall large clastic grain size. The magnetic variability that we see in the Quaternary Bering Sea sediments appears to be comparable to other studies from this region. VanLaningham et al. (2009) attribute deposition of the Meij... IODP Ex. 323 shipboard rock magnetic measurements of Quaternary deep-sea sediments from the Bering Sea identified a dramatic bimodal character to the sediments, alternating between sediments with strong natural magnetic remanence (NRM) and magnetic susceptibility (chi) and those with order-of-magnitude lower values. We now generally associate the high-magnetic-intensity sediments with interglacial/interstadial times and the low-magnetic-intensity intervals are generally associated with glacial/stadial conditions. This pattern can be largely correlated among all seven IODP Ex. 323 sites. We have now completed more detailed rock magnetic measurements on selected u-channeled sediments from these sites. U-channel rock magnetic measurements indicate that the high-intensity sediments contain relatively coarser magnetic grains (sand/silt) associated with coarser siliciclastic sediments while the low-intensity sediments contain finer magnetic grains (silt) associated with finer siliciclastic sediments. We associate the coarser magnetic grains and overall coarser clastic sediments with warmer intervals when more open water conditions permit sediment flux from the continental shelves. The finer magnetic grains and associated finer clastic sediment are largely derived from sediment reworking and redeposition associated with slope processes and deep-sea contour currents when ice cover was more permanent. We have corroborated the grain size variability with magnetic hysteresis measurements and clastic grain size analysis. The clastic grain size distributions of the coarser versus finer grained sediments are significantly different; coarser grained sediments have a broad grain size distribution with 50–60 μm mean grain size, while finer grained sediments have a much more narrow grain size distribution with 15–20 μm mean grain size. The finer grain size distribution is consistent in range and mean grain size to North Atlantic deep-sea sediment deposited as drift deposits by contourite deposition (Heezen and Ruddiman, 1966; Johnson et al., 1988). The dominant magnetic mineral in all sediments is detrital magnetite. Early sediment diagenesis plays a minor role in the overall rock magnetic variability of the Bering Sea deep-sea sediments due to the overall large clastic grain size. The magnetic variability that we see in the Quaternary Bering Sea sediments appears to be comparable to other studies from this region. VanLaningham et al. (2009) attribute deposition of the Meij... Quaternary climate Elsevier Bering sea Elsevier Rock magnetism Elsevier Deep sea sedimentation Elsevier Mortazavi, Emily oth Platzman, Ellen oth Kirby, Matt oth Stoner, Joe oth Okada, Makoto oth Enthalten in Elsevier Science Davis, Kayleigh R. ELSEVIER Seasonal factitious increase in serum potassium: Still a problem and should be recognised 2014 Amsterdam [u.a.] (DE-627)ELV023027428 volume:172 year:2021 pages:0 https://doi.org/10.1016/j.dsr.2021.103487 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U 35.40 Anorganische Chemie: Allgemeines VZ AR 172 2021 0 |
| spelling |
10.1016/j.dsr.2021.103487 doi /cbs_pica/cbs_olc/import_discovery/elsevier/einzuspielen/GBV00000000001651.pica (DE-627)ELV05415264X (ELSEVIER)S0967-0637(21)00026-1 DE-627 ger DE-627 rakwb eng 540 VZ 540 VZ 35.40 bkl Lund, Steve verfasserin aut Rock magnetic variability of quaternary deep-sea sediments from the Bering Sea and their environmental implications 2021transfer abstract nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier IODP Ex. 323 shipboard rock magnetic measurements of Quaternary deep-sea sediments from the Bering Sea identified a dramatic bimodal character to the sediments, alternating between sediments with strong natural magnetic remanence (NRM) and magnetic susceptibility (chi) and those with order-of-magnitude lower values. We now generally associate the high-magnetic-intensity sediments with interglacial/interstadial times and the low-magnetic-intensity intervals are generally associated with glacial/stadial conditions. This pattern can be largely correlated among all seven IODP Ex. 323 sites. We have now completed more detailed rock magnetic measurements on selected u-channeled sediments from these sites. U-channel rock magnetic measurements indicate that the high-intensity sediments contain relatively coarser magnetic grains (sand/silt) associated with coarser siliciclastic sediments while the low-intensity sediments contain finer magnetic grains (silt) associated with finer siliciclastic sediments. We associate the coarser magnetic grains and overall coarser clastic sediments with warmer intervals when more open water conditions permit sediment flux from the continental shelves. The finer magnetic grains and associated finer clastic sediment are largely derived from sediment reworking and redeposition associated with slope processes and deep-sea contour currents when ice cover was more permanent. We have corroborated the grain size variability with magnetic hysteresis measurements and clastic grain size analysis. The clastic grain size distributions of the coarser versus finer grained sediments are significantly different; coarser grained sediments have a broad grain size distribution with 50–60 μm mean grain size, while finer grained sediments have a much more narrow grain size distribution with 15–20 μm mean grain size. The finer grain size distribution is consistent in range and mean grain size to North Atlantic deep-sea sediment deposited as drift deposits by contourite deposition (Heezen and Ruddiman, 1966; Johnson et al., 1988). The dominant magnetic mineral in all sediments is detrital magnetite. Early sediment diagenesis plays a minor role in the overall rock magnetic variability of the Bering Sea deep-sea sediments due to the overall large clastic grain size. The magnetic variability that we see in the Quaternary Bering Sea sediments appears to be comparable to other studies from this region. VanLaningham et al. (2009) attribute deposition of the Meij... IODP Ex. 323 shipboard rock magnetic measurements of Quaternary deep-sea sediments from the Bering Sea identified a dramatic bimodal character to the sediments, alternating between sediments with strong natural magnetic remanence (NRM) and magnetic susceptibility (chi) and those with order-of-magnitude lower values. We now generally associate the high-magnetic-intensity sediments with interglacial/interstadial times and the low-magnetic-intensity intervals are generally associated with glacial/stadial conditions. This pattern can be largely correlated among all seven IODP Ex. 323 sites. We have now completed more detailed rock magnetic measurements on selected u-channeled sediments from these sites. U-channel rock magnetic measurements indicate that the high-intensity sediments contain relatively coarser magnetic grains (sand/silt) associated with coarser siliciclastic sediments while the low-intensity sediments contain finer magnetic grains (silt) associated with finer siliciclastic sediments. We associate the coarser magnetic grains and overall coarser clastic sediments with warmer intervals when more open water conditions permit sediment flux from the continental shelves. The finer magnetic grains and associated finer clastic sediment are largely derived from sediment reworking and redeposition associated with slope processes and deep-sea contour currents when ice cover was more permanent. We have corroborated the grain size variability with magnetic hysteresis measurements and clastic grain size analysis. The clastic grain size distributions of the coarser versus finer grained sediments are significantly different; coarser grained sediments have a broad grain size distribution with 50–60 μm mean grain size, while finer grained sediments have a much more narrow grain size distribution with 15–20 μm mean grain size. The finer grain size distribution is consistent in range and mean grain size to North Atlantic deep-sea sediment deposited as drift deposits by contourite deposition (Heezen and Ruddiman, 1966; Johnson et al., 1988). The dominant magnetic mineral in all sediments is detrital magnetite. Early sediment diagenesis plays a minor role in the overall rock magnetic variability of the Bering Sea deep-sea sediments due to the overall large clastic grain size. The magnetic variability that we see in the Quaternary Bering Sea sediments appears to be comparable to other studies from this region. VanLaningham et al. (2009) attribute deposition of the Meij... Quaternary climate Elsevier Bering sea Elsevier Rock magnetism Elsevier Deep sea sedimentation Elsevier Mortazavi, Emily oth Platzman, Ellen oth Kirby, Matt oth Stoner, Joe oth Okada, Makoto oth Enthalten in Elsevier Science Davis, Kayleigh R. ELSEVIER Seasonal factitious increase in serum potassium: Still a problem and should be recognised 2014 Amsterdam [u.a.] (DE-627)ELV023027428 volume:172 year:2021 pages:0 https://doi.org/10.1016/j.dsr.2021.103487 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U 35.40 Anorganische Chemie: Allgemeines VZ AR 172 2021 0 |
| allfields_unstemmed |
10.1016/j.dsr.2021.103487 doi /cbs_pica/cbs_olc/import_discovery/elsevier/einzuspielen/GBV00000000001651.pica (DE-627)ELV05415264X (ELSEVIER)S0967-0637(21)00026-1 DE-627 ger DE-627 rakwb eng 540 VZ 540 VZ 35.40 bkl Lund, Steve verfasserin aut Rock magnetic variability of quaternary deep-sea sediments from the Bering Sea and their environmental implications 2021transfer abstract nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier IODP Ex. 323 shipboard rock magnetic measurements of Quaternary deep-sea sediments from the Bering Sea identified a dramatic bimodal character to the sediments, alternating between sediments with strong natural magnetic remanence (NRM) and magnetic susceptibility (chi) and those with order-of-magnitude lower values. We now generally associate the high-magnetic-intensity sediments with interglacial/interstadial times and the low-magnetic-intensity intervals are generally associated with glacial/stadial conditions. This pattern can be largely correlated among all seven IODP Ex. 323 sites. We have now completed more detailed rock magnetic measurements on selected u-channeled sediments from these sites. U-channel rock magnetic measurements indicate that the high-intensity sediments contain relatively coarser magnetic grains (sand/silt) associated with coarser siliciclastic sediments while the low-intensity sediments contain finer magnetic grains (silt) associated with finer siliciclastic sediments. We associate the coarser magnetic grains and overall coarser clastic sediments with warmer intervals when more open water conditions permit sediment flux from the continental shelves. The finer magnetic grains and associated finer clastic sediment are largely derived from sediment reworking and redeposition associated with slope processes and deep-sea contour currents when ice cover was more permanent. We have corroborated the grain size variability with magnetic hysteresis measurements and clastic grain size analysis. The clastic grain size distributions of the coarser versus finer grained sediments are significantly different; coarser grained sediments have a broad grain size distribution with 50–60 μm mean grain size, while finer grained sediments have a much more narrow grain size distribution with 15–20 μm mean grain size. The finer grain size distribution is consistent in range and mean grain size to North Atlantic deep-sea sediment deposited as drift deposits by contourite deposition (Heezen and Ruddiman, 1966; Johnson et al., 1988). The dominant magnetic mineral in all sediments is detrital magnetite. Early sediment diagenesis plays a minor role in the overall rock magnetic variability of the Bering Sea deep-sea sediments due to the overall large clastic grain size. The magnetic variability that we see in the Quaternary Bering Sea sediments appears to be comparable to other studies from this region. VanLaningham et al. (2009) attribute deposition of the Meij... IODP Ex. 323 shipboard rock magnetic measurements of Quaternary deep-sea sediments from the Bering Sea identified a dramatic bimodal character to the sediments, alternating between sediments with strong natural magnetic remanence (NRM) and magnetic susceptibility (chi) and those with order-of-magnitude lower values. We now generally associate the high-magnetic-intensity sediments with interglacial/interstadial times and the low-magnetic-intensity intervals are generally associated with glacial/stadial conditions. This pattern can be largely correlated among all seven IODP Ex. 323 sites. We have now completed more detailed rock magnetic measurements on selected u-channeled sediments from these sites. U-channel rock magnetic measurements indicate that the high-intensity sediments contain relatively coarser magnetic grains (sand/silt) associated with coarser siliciclastic sediments while the low-intensity sediments contain finer magnetic grains (silt) associated with finer siliciclastic sediments. We associate the coarser magnetic grains and overall coarser clastic sediments with warmer intervals when more open water conditions permit sediment flux from the continental shelves. The finer magnetic grains and associated finer clastic sediment are largely derived from sediment reworking and redeposition associated with slope processes and deep-sea contour currents when ice cover was more permanent. We have corroborated the grain size variability with magnetic hysteresis measurements and clastic grain size analysis. The clastic grain size distributions of the coarser versus finer grained sediments are significantly different; coarser grained sediments have a broad grain size distribution with 50–60 μm mean grain size, while finer grained sediments have a much more narrow grain size distribution with 15–20 μm mean grain size. The finer grain size distribution is consistent in range and mean grain size to North Atlantic deep-sea sediment deposited as drift deposits by contourite deposition (Heezen and Ruddiman, 1966; Johnson et al., 1988). The dominant magnetic mineral in all sediments is detrital magnetite. Early sediment diagenesis plays a minor role in the overall rock magnetic variability of the Bering Sea deep-sea sediments due to the overall large clastic grain size. The magnetic variability that we see in the Quaternary Bering Sea sediments appears to be comparable to other studies from this region. VanLaningham et al. (2009) attribute deposition of the Meij... Quaternary climate Elsevier Bering sea Elsevier Rock magnetism Elsevier Deep sea sedimentation Elsevier Mortazavi, Emily oth Platzman, Ellen oth Kirby, Matt oth Stoner, Joe oth Okada, Makoto oth Enthalten in Elsevier Science Davis, Kayleigh R. ELSEVIER Seasonal factitious increase in serum potassium: Still a problem and should be recognised 2014 Amsterdam [u.a.] (DE-627)ELV023027428 volume:172 year:2021 pages:0 https://doi.org/10.1016/j.dsr.2021.103487 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U 35.40 Anorganische Chemie: Allgemeines VZ AR 172 2021 0 |
| allfieldsGer |
10.1016/j.dsr.2021.103487 doi /cbs_pica/cbs_olc/import_discovery/elsevier/einzuspielen/GBV00000000001651.pica (DE-627)ELV05415264X (ELSEVIER)S0967-0637(21)00026-1 DE-627 ger DE-627 rakwb eng 540 VZ 540 VZ 35.40 bkl Lund, Steve verfasserin aut Rock magnetic variability of quaternary deep-sea sediments from the Bering Sea and their environmental implications 2021transfer abstract nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier IODP Ex. 323 shipboard rock magnetic measurements of Quaternary deep-sea sediments from the Bering Sea identified a dramatic bimodal character to the sediments, alternating between sediments with strong natural magnetic remanence (NRM) and magnetic susceptibility (chi) and those with order-of-magnitude lower values. We now generally associate the high-magnetic-intensity sediments with interglacial/interstadial times and the low-magnetic-intensity intervals are generally associated with glacial/stadial conditions. This pattern can be largely correlated among all seven IODP Ex. 323 sites. We have now completed more detailed rock magnetic measurements on selected u-channeled sediments from these sites. U-channel rock magnetic measurements indicate that the high-intensity sediments contain relatively coarser magnetic grains (sand/silt) associated with coarser siliciclastic sediments while the low-intensity sediments contain finer magnetic grains (silt) associated with finer siliciclastic sediments. We associate the coarser magnetic grains and overall coarser clastic sediments with warmer intervals when more open water conditions permit sediment flux from the continental shelves. The finer magnetic grains and associated finer clastic sediment are largely derived from sediment reworking and redeposition associated with slope processes and deep-sea contour currents when ice cover was more permanent. We have corroborated the grain size variability with magnetic hysteresis measurements and clastic grain size analysis. The clastic grain size distributions of the coarser versus finer grained sediments are significantly different; coarser grained sediments have a broad grain size distribution with 50–60 μm mean grain size, while finer grained sediments have a much more narrow grain size distribution with 15–20 μm mean grain size. The finer grain size distribution is consistent in range and mean grain size to North Atlantic deep-sea sediment deposited as drift deposits by contourite deposition (Heezen and Ruddiman, 1966; Johnson et al., 1988). The dominant magnetic mineral in all sediments is detrital magnetite. Early sediment diagenesis plays a minor role in the overall rock magnetic variability of the Bering Sea deep-sea sediments due to the overall large clastic grain size. The magnetic variability that we see in the Quaternary Bering Sea sediments appears to be comparable to other studies from this region. VanLaningham et al. (2009) attribute deposition of the Meij... IODP Ex. 323 shipboard rock magnetic measurements of Quaternary deep-sea sediments from the Bering Sea identified a dramatic bimodal character to the sediments, alternating between sediments with strong natural magnetic remanence (NRM) and magnetic susceptibility (chi) and those with order-of-magnitude lower values. We now generally associate the high-magnetic-intensity sediments with interglacial/interstadial times and the low-magnetic-intensity intervals are generally associated with glacial/stadial conditions. This pattern can be largely correlated among all seven IODP Ex. 323 sites. We have now completed more detailed rock magnetic measurements on selected u-channeled sediments from these sites. U-channel rock magnetic measurements indicate that the high-intensity sediments contain relatively coarser magnetic grains (sand/silt) associated with coarser siliciclastic sediments while the low-intensity sediments contain finer magnetic grains (silt) associated with finer siliciclastic sediments. We associate the coarser magnetic grains and overall coarser clastic sediments with warmer intervals when more open water conditions permit sediment flux from the continental shelves. The finer magnetic grains and associated finer clastic sediment are largely derived from sediment reworking and redeposition associated with slope processes and deep-sea contour currents when ice cover was more permanent. We have corroborated the grain size variability with magnetic hysteresis measurements and clastic grain size analysis. The clastic grain size distributions of the coarser versus finer grained sediments are significantly different; coarser grained sediments have a broad grain size distribution with 50–60 μm mean grain size, while finer grained sediments have a much more narrow grain size distribution with 15–20 μm mean grain size. The finer grain size distribution is consistent in range and mean grain size to North Atlantic deep-sea sediment deposited as drift deposits by contourite deposition (Heezen and Ruddiman, 1966; Johnson et al., 1988). The dominant magnetic mineral in all sediments is detrital magnetite. Early sediment diagenesis plays a minor role in the overall rock magnetic variability of the Bering Sea deep-sea sediments due to the overall large clastic grain size. The magnetic variability that we see in the Quaternary Bering Sea sediments appears to be comparable to other studies from this region. VanLaningham et al. (2009) attribute deposition of the Meij... Quaternary climate Elsevier Bering sea Elsevier Rock magnetism Elsevier Deep sea sedimentation Elsevier Mortazavi, Emily oth Platzman, Ellen oth Kirby, Matt oth Stoner, Joe oth Okada, Makoto oth Enthalten in Elsevier Science Davis, Kayleigh R. ELSEVIER Seasonal factitious increase in serum potassium: Still a problem and should be recognised 2014 Amsterdam [u.a.] (DE-627)ELV023027428 volume:172 year:2021 pages:0 https://doi.org/10.1016/j.dsr.2021.103487 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U 35.40 Anorganische Chemie: Allgemeines VZ AR 172 2021 0 |
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10.1016/j.dsr.2021.103487 doi /cbs_pica/cbs_olc/import_discovery/elsevier/einzuspielen/GBV00000000001651.pica (DE-627)ELV05415264X (ELSEVIER)S0967-0637(21)00026-1 DE-627 ger DE-627 rakwb eng 540 VZ 540 VZ 35.40 bkl Lund, Steve verfasserin aut Rock magnetic variability of quaternary deep-sea sediments from the Bering Sea and their environmental implications 2021transfer abstract nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier IODP Ex. 323 shipboard rock magnetic measurements of Quaternary deep-sea sediments from the Bering Sea identified a dramatic bimodal character to the sediments, alternating between sediments with strong natural magnetic remanence (NRM) and magnetic susceptibility (chi) and those with order-of-magnitude lower values. We now generally associate the high-magnetic-intensity sediments with interglacial/interstadial times and the low-magnetic-intensity intervals are generally associated with glacial/stadial conditions. This pattern can be largely correlated among all seven IODP Ex. 323 sites. We have now completed more detailed rock magnetic measurements on selected u-channeled sediments from these sites. U-channel rock magnetic measurements indicate that the high-intensity sediments contain relatively coarser magnetic grains (sand/silt) associated with coarser siliciclastic sediments while the low-intensity sediments contain finer magnetic grains (silt) associated with finer siliciclastic sediments. We associate the coarser magnetic grains and overall coarser clastic sediments with warmer intervals when more open water conditions permit sediment flux from the continental shelves. The finer magnetic grains and associated finer clastic sediment are largely derived from sediment reworking and redeposition associated with slope processes and deep-sea contour currents when ice cover was more permanent. We have corroborated the grain size variability with magnetic hysteresis measurements and clastic grain size analysis. The clastic grain size distributions of the coarser versus finer grained sediments are significantly different; coarser grained sediments have a broad grain size distribution with 50–60 μm mean grain size, while finer grained sediments have a much more narrow grain size distribution with 15–20 μm mean grain size. The finer grain size distribution is consistent in range and mean grain size to North Atlantic deep-sea sediment deposited as drift deposits by contourite deposition (Heezen and Ruddiman, 1966; Johnson et al., 1988). The dominant magnetic mineral in all sediments is detrital magnetite. Early sediment diagenesis plays a minor role in the overall rock magnetic variability of the Bering Sea deep-sea sediments due to the overall large clastic grain size. The magnetic variability that we see in the Quaternary Bering Sea sediments appears to be comparable to other studies from this region. VanLaningham et al. (2009) attribute deposition of the Meij... IODP Ex. 323 shipboard rock magnetic measurements of Quaternary deep-sea sediments from the Bering Sea identified a dramatic bimodal character to the sediments, alternating between sediments with strong natural magnetic remanence (NRM) and magnetic susceptibility (chi) and those with order-of-magnitude lower values. We now generally associate the high-magnetic-intensity sediments with interglacial/interstadial times and the low-magnetic-intensity intervals are generally associated with glacial/stadial conditions. This pattern can be largely correlated among all seven IODP Ex. 323 sites. We have now completed more detailed rock magnetic measurements on selected u-channeled sediments from these sites. U-channel rock magnetic measurements indicate that the high-intensity sediments contain relatively coarser magnetic grains (sand/silt) associated with coarser siliciclastic sediments while the low-intensity sediments contain finer magnetic grains (silt) associated with finer siliciclastic sediments. We associate the coarser magnetic grains and overall coarser clastic sediments with warmer intervals when more open water conditions permit sediment flux from the continental shelves. The finer magnetic grains and associated finer clastic sediment are largely derived from sediment reworking and redeposition associated with slope processes and deep-sea contour currents when ice cover was more permanent. We have corroborated the grain size variability with magnetic hysteresis measurements and clastic grain size analysis. The clastic grain size distributions of the coarser versus finer grained sediments are significantly different; coarser grained sediments have a broad grain size distribution with 50–60 μm mean grain size, while finer grained sediments have a much more narrow grain size distribution with 15–20 μm mean grain size. The finer grain size distribution is consistent in range and mean grain size to North Atlantic deep-sea sediment deposited as drift deposits by contourite deposition (Heezen and Ruddiman, 1966; Johnson et al., 1988). The dominant magnetic mineral in all sediments is detrital magnetite. Early sediment diagenesis plays a minor role in the overall rock magnetic variability of the Bering Sea deep-sea sediments due to the overall large clastic grain size. The magnetic variability that we see in the Quaternary Bering Sea sediments appears to be comparable to other studies from this region. VanLaningham et al. (2009) attribute deposition of the Meij... Quaternary climate Elsevier Bering sea Elsevier Rock magnetism Elsevier Deep sea sedimentation Elsevier Mortazavi, Emily oth Platzman, Ellen oth Kirby, Matt oth Stoner, Joe oth Okada, Makoto oth Enthalten in Elsevier Science Davis, Kayleigh R. ELSEVIER Seasonal factitious increase in serum potassium: Still a problem and should be recognised 2014 Amsterdam [u.a.] (DE-627)ELV023027428 volume:172 year:2021 pages:0 https://doi.org/10.1016/j.dsr.2021.103487 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U 35.40 Anorganische Chemie: Allgemeines VZ AR 172 2021 0 |
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Rock magnetic variability of quaternary deep-sea sediments from the Bering Sea and their environmental implications |
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IODP Ex. 323 shipboard rock magnetic measurements of Quaternary deep-sea sediments from the Bering Sea identified a dramatic bimodal character to the sediments, alternating between sediments with strong natural magnetic remanence (NRM) and magnetic susceptibility (chi) and those with order-of-magnitude lower values. We now generally associate the high-magnetic-intensity sediments with interglacial/interstadial times and the low-magnetic-intensity intervals are generally associated with glacial/stadial conditions. This pattern can be largely correlated among all seven IODP Ex. 323 sites. We have now completed more detailed rock magnetic measurements on selected u-channeled sediments from these sites. U-channel rock magnetic measurements indicate that the high-intensity sediments contain relatively coarser magnetic grains (sand/silt) associated with coarser siliciclastic sediments while the low-intensity sediments contain finer magnetic grains (silt) associated with finer siliciclastic sediments. We associate the coarser magnetic grains and overall coarser clastic sediments with warmer intervals when more open water conditions permit sediment flux from the continental shelves. The finer magnetic grains and associated finer clastic sediment are largely derived from sediment reworking and redeposition associated with slope processes and deep-sea contour currents when ice cover was more permanent. We have corroborated the grain size variability with magnetic hysteresis measurements and clastic grain size analysis. The clastic grain size distributions of the coarser versus finer grained sediments are significantly different; coarser grained sediments have a broad grain size distribution with 50–60 μm mean grain size, while finer grained sediments have a much more narrow grain size distribution with 15–20 μm mean grain size. The finer grain size distribution is consistent in range and mean grain size to North Atlantic deep-sea sediment deposited as drift deposits by contourite deposition (Heezen and Ruddiman, 1966; Johnson et al., 1988). The dominant magnetic mineral in all sediments is detrital magnetite. Early sediment diagenesis plays a minor role in the overall rock magnetic variability of the Bering Sea deep-sea sediments due to the overall large clastic grain size. The magnetic variability that we see in the Quaternary Bering Sea sediments appears to be comparable to other studies from this region. VanLaningham et al. (2009) attribute deposition of the Meij... |
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IODP Ex. 323 shipboard rock magnetic measurements of Quaternary deep-sea sediments from the Bering Sea identified a dramatic bimodal character to the sediments, alternating between sediments with strong natural magnetic remanence (NRM) and magnetic susceptibility (chi) and those with order-of-magnitude lower values. We now generally associate the high-magnetic-intensity sediments with interglacial/interstadial times and the low-magnetic-intensity intervals are generally associated with glacial/stadial conditions. This pattern can be largely correlated among all seven IODP Ex. 323 sites. We have now completed more detailed rock magnetic measurements on selected u-channeled sediments from these sites. U-channel rock magnetic measurements indicate that the high-intensity sediments contain relatively coarser magnetic grains (sand/silt) associated with coarser siliciclastic sediments while the low-intensity sediments contain finer magnetic grains (silt) associated with finer siliciclastic sediments. We associate the coarser magnetic grains and overall coarser clastic sediments with warmer intervals when more open water conditions permit sediment flux from the continental shelves. The finer magnetic grains and associated finer clastic sediment are largely derived from sediment reworking and redeposition associated with slope processes and deep-sea contour currents when ice cover was more permanent. We have corroborated the grain size variability with magnetic hysteresis measurements and clastic grain size analysis. The clastic grain size distributions of the coarser versus finer grained sediments are significantly different; coarser grained sediments have a broad grain size distribution with 50–60 μm mean grain size, while finer grained sediments have a much more narrow grain size distribution with 15–20 μm mean grain size. The finer grain size distribution is consistent in range and mean grain size to North Atlantic deep-sea sediment deposited as drift deposits by contourite deposition (Heezen and Ruddiman, 1966; Johnson et al., 1988). The dominant magnetic mineral in all sediments is detrital magnetite. Early sediment diagenesis plays a minor role in the overall rock magnetic variability of the Bering Sea deep-sea sediments due to the overall large clastic grain size. The magnetic variability that we see in the Quaternary Bering Sea sediments appears to be comparable to other studies from this region. VanLaningham et al. (2009) attribute deposition of the Meij... |
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IODP Ex. 323 shipboard rock magnetic measurements of Quaternary deep-sea sediments from the Bering Sea identified a dramatic bimodal character to the sediments, alternating between sediments with strong natural magnetic remanence (NRM) and magnetic susceptibility (chi) and those with order-of-magnitude lower values. We now generally associate the high-magnetic-intensity sediments with interglacial/interstadial times and the low-magnetic-intensity intervals are generally associated with glacial/stadial conditions. This pattern can be largely correlated among all seven IODP Ex. 323 sites. We have now completed more detailed rock magnetic measurements on selected u-channeled sediments from these sites. U-channel rock magnetic measurements indicate that the high-intensity sediments contain relatively coarser magnetic grains (sand/silt) associated with coarser siliciclastic sediments while the low-intensity sediments contain finer magnetic grains (silt) associated with finer siliciclastic sediments. We associate the coarser magnetic grains and overall coarser clastic sediments with warmer intervals when more open water conditions permit sediment flux from the continental shelves. The finer magnetic grains and associated finer clastic sediment are largely derived from sediment reworking and redeposition associated with slope processes and deep-sea contour currents when ice cover was more permanent. We have corroborated the grain size variability with magnetic hysteresis measurements and clastic grain size analysis. The clastic grain size distributions of the coarser versus finer grained sediments are significantly different; coarser grained sediments have a broad grain size distribution with 50–60 μm mean grain size, while finer grained sediments have a much more narrow grain size distribution with 15–20 μm mean grain size. The finer grain size distribution is consistent in range and mean grain size to North Atlantic deep-sea sediment deposited as drift deposits by contourite deposition (Heezen and Ruddiman, 1966; Johnson et al., 1988). The dominant magnetic mineral in all sediments is detrital magnetite. Early sediment diagenesis plays a minor role in the overall rock magnetic variability of the Bering Sea deep-sea sediments due to the overall large clastic grain size. The magnetic variability that we see in the Quaternary Bering Sea sediments appears to be comparable to other studies from this region. VanLaningham et al. (2009) attribute deposition of the Meij... |
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<?xml version="1.0" encoding="UTF-8"?><collection xmlns="http://www.loc.gov/MARC21/slim"><record><leader>01000caa a22002652 4500</leader><controlfield tag="001">ELV05415264X</controlfield><controlfield tag="003">DE-627</controlfield><controlfield tag="005">20230626035743.0</controlfield><controlfield tag="007">cr uuu---uuuuu</controlfield><controlfield tag="008">210910s2021 xx |||||o 00| ||eng c</controlfield><datafield tag="024" ind1="7" ind2=" "><subfield code="a">10.1016/j.dsr.2021.103487</subfield><subfield code="2">doi</subfield></datafield><datafield tag="028" ind1="5" ind2="2"><subfield code="a">/cbs_pica/cbs_olc/import_discovery/elsevier/einzuspielen/GBV00000000001651.pica</subfield></datafield><datafield tag="035" ind1=" " ind2=" "><subfield code="a">(DE-627)ELV05415264X</subfield></datafield><datafield tag="035" ind1=" " ind2=" "><subfield code="a">(ELSEVIER)S0967-0637(21)00026-1</subfield></datafield><datafield tag="040" ind1=" " ind2=" "><subfield code="a">DE-627</subfield><subfield code="b">ger</subfield><subfield code="c">DE-627</subfield><subfield code="e">rakwb</subfield></datafield><datafield tag="041" ind1=" " ind2=" "><subfield code="a">eng</subfield></datafield><datafield tag="082" ind1="0" ind2="4"><subfield code="a">540</subfield><subfield code="q">VZ</subfield></datafield><datafield tag="082" ind1="0" ind2="4"><subfield code="a">540</subfield><subfield code="q">VZ</subfield></datafield><datafield tag="084" ind1=" " ind2=" "><subfield code="a">35.40</subfield><subfield code="2">bkl</subfield></datafield><datafield tag="100" ind1="1" ind2=" "><subfield code="a">Lund, Steve</subfield><subfield code="e">verfasserin</subfield><subfield code="4">aut</subfield></datafield><datafield tag="245" ind1="1" ind2="0"><subfield code="a">Rock magnetic variability of quaternary deep-sea sediments from the Bering Sea and their environmental implications</subfield></datafield><datafield tag="264" ind1=" " ind2="1"><subfield code="c">2021transfer abstract</subfield></datafield><datafield tag="336" ind1=" " ind2=" "><subfield code="a">nicht spezifiziert</subfield><subfield code="b">zzz</subfield><subfield code="2">rdacontent</subfield></datafield><datafield tag="337" ind1=" " ind2=" "><subfield code="a">nicht spezifiziert</subfield><subfield code="b">z</subfield><subfield code="2">rdamedia</subfield></datafield><datafield tag="338" ind1=" " ind2=" "><subfield code="a">nicht spezifiziert</subfield><subfield code="b">zu</subfield><subfield code="2">rdacarrier</subfield></datafield><datafield tag="520" ind1=" " ind2=" "><subfield code="a">IODP Ex. 323 shipboard rock magnetic measurements of Quaternary deep-sea sediments from the Bering Sea identified a dramatic bimodal character to the sediments, alternating between sediments with strong natural magnetic remanence (NRM) and magnetic susceptibility (chi) and those with order-of-magnitude lower values. We now generally associate the high-magnetic-intensity sediments with interglacial/interstadial times and the low-magnetic-intensity intervals are generally associated with glacial/stadial conditions. This pattern can be largely correlated among all seven IODP Ex. 323 sites. We have now completed more detailed rock magnetic measurements on selected u-channeled sediments from these sites. U-channel rock magnetic measurements indicate that the high-intensity sediments contain relatively coarser magnetic grains (sand/silt) associated with coarser siliciclastic sediments while the low-intensity sediments contain finer magnetic grains (silt) associated with finer siliciclastic sediments. We associate the coarser magnetic grains and overall coarser clastic sediments with warmer intervals when more open water conditions permit sediment flux from the continental shelves. The finer magnetic grains and associated finer clastic sediment are largely derived from sediment reworking and redeposition associated with slope processes and deep-sea contour currents when ice cover was more permanent. We have corroborated the grain size variability with magnetic hysteresis measurements and clastic grain size analysis. The clastic grain size distributions of the coarser versus finer grained sediments are significantly different; coarser grained sediments have a broad grain size distribution with 50–60 μm mean grain size, while finer grained sediments have a much more narrow grain size distribution with 15–20 μm mean grain size. The finer grain size distribution is consistent in range and mean grain size to North Atlantic deep-sea sediment deposited as drift deposits by contourite deposition (Heezen and Ruddiman, 1966; Johnson et al., 1988). The dominant magnetic mineral in all sediments is detrital magnetite. Early sediment diagenesis plays a minor role in the overall rock magnetic variability of the Bering Sea deep-sea sediments due to the overall large clastic grain size. The magnetic variability that we see in the Quaternary Bering Sea sediments appears to be comparable to other studies from this region. VanLaningham et al. (2009) attribute deposition of the Meij...</subfield></datafield><datafield tag="520" ind1=" " ind2=" "><subfield code="a">IODP Ex. 323 shipboard rock magnetic measurements of Quaternary deep-sea sediments from the Bering Sea identified a dramatic bimodal character to the sediments, alternating between sediments with strong natural magnetic remanence (NRM) and magnetic susceptibility (chi) and those with order-of-magnitude lower values. We now generally associate the high-magnetic-intensity sediments with interglacial/interstadial times and the low-magnetic-intensity intervals are generally associated with glacial/stadial conditions. This pattern can be largely correlated among all seven IODP Ex. 323 sites. We have now completed more detailed rock magnetic measurements on selected u-channeled sediments from these sites. U-channel rock magnetic measurements indicate that the high-intensity sediments contain relatively coarser magnetic grains (sand/silt) associated with coarser siliciclastic sediments while the low-intensity sediments contain finer magnetic grains (silt) associated with finer siliciclastic sediments. We associate the coarser magnetic grains and overall coarser clastic sediments with warmer intervals when more open water conditions permit sediment flux from the continental shelves. The finer magnetic grains and associated finer clastic sediment are largely derived from sediment reworking and redeposition associated with slope processes and deep-sea contour currents when ice cover was more permanent. We have corroborated the grain size variability with magnetic hysteresis measurements and clastic grain size analysis. The clastic grain size distributions of the coarser versus finer grained sediments are significantly different; coarser grained sediments have a broad grain size distribution with 50–60 μm mean grain size, while finer grained sediments have a much more narrow grain size distribution with 15–20 μm mean grain size. The finer grain size distribution is consistent in range and mean grain size to North Atlantic deep-sea sediment deposited as drift deposits by contourite deposition (Heezen and Ruddiman, 1966; Johnson et al., 1988). The dominant magnetic mineral in all sediments is detrital magnetite. Early sediment diagenesis plays a minor role in the overall rock magnetic variability of the Bering Sea deep-sea sediments due to the overall large clastic grain size. The magnetic variability that we see in the Quaternary Bering Sea sediments appears to be comparable to other studies from this region. VanLaningham et al. (2009) attribute deposition of the Meij...</subfield></datafield><datafield tag="650" ind1=" " ind2="7"><subfield code="a">Quaternary climate</subfield><subfield code="2">Elsevier</subfield></datafield><datafield tag="650" ind1=" " ind2="7"><subfield code="a">Bering sea</subfield><subfield code="2">Elsevier</subfield></datafield><datafield tag="650" ind1=" " ind2="7"><subfield code="a">Rock magnetism</subfield><subfield code="2">Elsevier</subfield></datafield><datafield tag="650" ind1=" " ind2="7"><subfield code="a">Deep sea sedimentation</subfield><subfield code="2">Elsevier</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Mortazavi, Emily</subfield><subfield code="4">oth</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Platzman, Ellen</subfield><subfield code="4">oth</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Kirby, Matt</subfield><subfield code="4">oth</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Stoner, Joe</subfield><subfield code="4">oth</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Okada, Makoto</subfield><subfield code="4">oth</subfield></datafield><datafield tag="773" ind1="0" ind2="8"><subfield code="i">Enthalten in</subfield><subfield code="n">Elsevier Science</subfield><subfield code="a">Davis, Kayleigh R. ELSEVIER</subfield><subfield code="t">Seasonal factitious increase in serum potassium: Still a problem and should be recognised</subfield><subfield code="d">2014</subfield><subfield code="g">Amsterdam [u.a.]</subfield><subfield code="w">(DE-627)ELV023027428</subfield></datafield><datafield tag="773" ind1="1" ind2="8"><subfield code="g">volume:172</subfield><subfield code="g">year:2021</subfield><subfield code="g">pages:0</subfield></datafield><datafield tag="856" ind1="4" ind2="0"><subfield code="u">https://doi.org/10.1016/j.dsr.2021.103487</subfield><subfield code="3">Volltext</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_USEFLAG_U</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ELV</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">SYSFLAG_U</subfield></datafield><datafield tag="936" ind1="b" ind2="k"><subfield code="a">35.40</subfield><subfield code="j">Anorganische Chemie: Allgemeines</subfield><subfield code="q">VZ</subfield></datafield><datafield tag="951" ind1=" " ind2=" "><subfield code="a">AR</subfield></datafield><datafield tag="952" ind1=" " ind2=" "><subfield code="d">172</subfield><subfield code="j">2021</subfield><subfield code="h">0</subfield></datafield></record></collection>
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7.40199 |