X-ray fluorescence scanning of discrete samples : a new tool for the geochemical characterization of loess-paleosol sequences

Geochemistry, multivariate statistics, paleoclimatology, sediment archive, Pleistocene, Central Europe, sedimentology, chemostratigraphy.

Gespeichert in:

Autor*in:	Profe, Jörn [verfasserIn]
Körperschaften:	Universität Bremen [Grad-verleihende Institution]
Hochschulschrift:	Dissertation ; Universität Bremen ; 2018

Format:	E-Book
Sprache:	Englisch

Erschienen:	Bremen: 2017

Formangabe:	Hochschulschrift

Umfang:	1 Online-Ressource (vii, 159, viii-ix Blätter) ; Illustrationen

Weitere Ausgabe:	Erscheint auch als Druck-Ausgabe Profe, Jörn: X-ray fluorescence scanning of discrete samples - Bremen, 2017

Links:	Link aufrufen Volltext Volltext Volltext Volltext

DOI / URN:	urn:nbn:de:gbv:46-00106653-12

Katalog-ID:	1029404143

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Magnetic susceptibility and grain-size are proven as reliable proxies for pedogenesis and wind activity. Thus, to analyse these proxies, LPS are sampled in high spatial resolutions down to 2 cm. In contrast, geochemical data indicating weathering intensity, dust provenance and grain-size dynamics are often acquired with 10 cm resolution at best by using time- and cost-intensive quantitative analytical methods. However, results derived from X-ray fluorescence (XRF) scanning in the marine and lacustrine realm demonstrate that determining qualitative, relative changes in the elemental composition of a profile is generally sufficient to track paleoenvironmental changes at a high spatial resolution down to 100 micrometre. With the design of sample holders that allow measurements of discrete samples with an ITRAX XRF core-scanner, it becomes possible to exploit the unused potential of high-resolution samples previously taken for grain-size analysis as to geochemistry. Consequently, the aim of this study is to benchmark XRF scanning of discrete samples against other proxy data to evaluate the potential of high-resolution qualitative geochemistry unravelling weathering intensity, dust source changes and grain-size variations. For this purpose, three well-studied European LPS (Schwalbenberg II, Germany; Susak, Croatia; Süttö, Hungary) have been considered. They cover different time periods from Marine Isotope Stage (MIS) 7 to MIS 2 and are predominantly influenced either by oceanic, continental or Mediterranean climate respectively. 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Magnetic susceptibility and grain-size are proven as reliable proxies for pedogenesis and wind activity. Thus, to analyse these proxies, LPS are sampled in high spatial resolutions down to 2 cm. In contrast, geochemical data indicating weathering intensity, dust provenance and grain-size dynamics are often acquired with 10 cm resolution at best by using time- and cost-intensive quantitative analytical methods. However, results derived from X-ray fluorescence (XRF) scanning in the marine and lacustrine realm demonstrate that determining qualitative, relative changes in the elemental composition of a profile is generally sufficient to track paleoenvironmental changes at a high spatial resolution down to 100 micrometre. With the design of sample holders that allow measurements of discrete samples with an ITRAX XRF core-scanner, it becomes possible to exploit the unused potential of high-resolution samples previously taken for grain-size analysis as to geochemistry. Consequently, the aim of this study is to benchmark XRF scanning of discrete samples against other proxy data to evaluate the potential of high-resolution qualitative geochemistry unravelling weathering intensity, dust source changes and grain-size variations. For this purpose, three well-studied European LPS (Schwalbenberg II, Germany; Susak, Croatia; Süttö, Hungary) have been considered. They cover different time periods from Marine Isotope Stage (MIS) 7 to MIS 2 and are predominantly influenced either by oceanic, continental or Mediterranean climate respectively. Archivierung/Langzeitarchivierung gewährleistet pdager DE-101 Hochschulschrift (DE-588)4113937-9 (DE-627)105825778 (DE-576)209480580 gnd-content Universität Bremen Grad-verleihende Institution (DE-588)2001386-3 (DE-627)101380429 (DE-576)191575038 dgg Bremen (DE-588)4008135-7 (DE-627)106369636 (DE-576)208874569 uvp Erscheint auch als Druck-Ausgabe Profe, Jörn X-ray fluorescence scanning of discrete samples Bremen, 2017 vii, 159, viii-ix Blätter (DE-627)102940402X http://nbn-resolving.de/urn:nbn:de:gbv:46-00106653-12 Resolving-System kostenfrei Volltext http://nbn-resolving.de/urn:nbn:de:gbv:46-00106653-12 2018-09-05 Resolving-System Volltext http://d-nb.info/1165772167/34 2018-09-05 Langzeitarchivierung Nationalbibliothek Volltext http://elib.suub.uni-bremen.de/edocs/00106653-1.pdf 2018-09-05 Verlag kostenfrei Volltext GBV-ODiss GBV_ILN_20 ISIL_DE-84 SYSFLAG_1 GBV_KXP SSG-OPC-GGO GBV_ILN_21 ISIL_DE-46 GBV_ILN_22 ISIL_DE-18 GBV_ILN_23 ISIL_DE-830 GBV_ILN_30 ISIL_DE-104 GBV_ILN_40 ISIL_DE-7 GBV_ILN_60 ISIL_DE-705 GBV_ILN_63 ISIL_DE-Wim2 GBV_ILN_65 ISIL_DE-3 GBV_ILN_70 ISIL_DE-89 GBV_ILN_105 ISIL_DE-841 GBV_ILN_110 ISIL_DE-Luen4 GBV_ILN_132 ISIL_DE-959 GBV_ILN_151 ISIL_DE-546 GBV_ILN_161 ISIL_DE-960 GBV_ILN_293 ISIL_DE-960-3 GBV_ILN_370 ISIL_DE-1373 GBV_ILN_2403 ISIL_DE-LFER BO 20 01 0084 1802634029 x 07-09-18 21 01 0046 1798115735 ebook_2018_dissbremen Kostenloser Zugriff zza 24-08-18 22 01 0018 1802662227 SUBolrd xu 07-09-18 23 01 0830 1802710000 olr-d x 07-09-18 30 01 0104 1802751882 z 07-09-18 40 01 0007 1802762752 xsn 07-09-18 60 01 0705 1802776982 OLRD z 07-09-18 63 01 3401 1802817867 ORD x 07-09-18 65 01 0003 4168235823 GBV-ODiss Open Access z 17-07-22 70 01 0089 1802859640 zdo 07-09-18 105 01 0841 1803122854 z 07-09-18 110 01 3110 180290798X x 07-09-18 132 01 0959 1802922350 OLR-DISS x 07-09-18 151 01 0546 4159401074 OLR-ODISS z 30-06-22 161 01 0960 1802971459 ORD z 07-09-18 293 01 3293 1803105186 ORD z 07-09-18 370 01 4370 1803115963 x 07-09-18 2403 01 DE-LFER 3480316913 00 --%%-- --%%-- n --%%-- l01 31-05-19 20 01 0084 http://nbn-resolving.de/urn:nbn:de:gbv:46-00106653-12 21 01 0046 http://nbn-resolving.de/urn:nbn:de:gbv:46-00106653-12 LF 22 01 0018 http://nbn-resolving.de/urn:nbn:de:gbv:46-00106653-12 23 01 0830 http://nbn-resolving.de/urn:nbn:de:gbv:46-00106653-12 30 01 0104 http://nbn-resolving.de/urn:nbn:de:gbv:46-00106653-12 40 01 0007 http://nbn-resolving.de/urn:nbn:de:gbv:46-00106653-12 60 01 0705 http://nbn-resolving.de/urn:nbn:de:gbv:46-00106653-12 63 01 3401 E-Book http://nbn-resolving.de/urn:nbn:de:gbv:46-00106653-12 LF 65 01 0003 http://nbn-resolving.de/urn:nbn:de:gbv:46-00106653-12 70 01 0089 http://nbn-resolving.de/urn:nbn:de:gbv:46-00106653-12 105 01 0841 http://nbn-resolving.de/urn:nbn:de:gbv:46-00106653-12 110 01 3110 http://nbn-resolving.de/urn:nbn:de:gbv:46-00106653-12 132 01 0959 http://nbn-resolving.de/urn:nbn:de:gbv:46-00106653-12 151 01 0546 Volltext http://nbn-resolving.de/urn:nbn:de:gbv:46-00106653-12 161 01 0960 http://nbn-resolving.de/urn:nbn:de:gbv:46-00106653-12 293 01 3293 http://nbn-resolving.de/urn:nbn:de:gbv:46-00106653-12 370 01 4370 http://nbn-resolving.de/urn:nbn:de:gbv:46-00106653-12 2403 01 DE-LFER http://nbn-resolving.de/urn:nbn:de:gbv:46-00106653-12 21 00 DE-46 00 Universität Bremen 21 00 DE-46 00 Fachbereich 08: Sozialwissenschaften (FB 08) 21 00 DE-46 99 07 60 01 0705 10 ho 20 01 0084 OLRD 110 01 3110 OLRD 370 01 4370 OLRD 21 01 0046 ebook_2018_dissbremen 22 01 0018 SUBolrd 23 01 0830 olr-d 60 01 0705 OLRD 63 01 3401 ORD 65 01 0003 GBV-ODiss 132 01 0959 OLR-DISS 151 01 0546 OLR-ODISS 161 01 0960 ORD 293 01 3293 ORD 23 01 0830 2018-09-07:10:08:14
allfields_unstemmed	18,O09 dnb 1165772167 DE-101 urn:nbn:de:gbv:46-00106653-12 urn (DE-627)1029404143 (DE-599)GBV1029404143 (OCoLC)1057314779 DE-627 ger DE-627 rda eng XA-DE 550 DE-101 Profe, Jörn verfasserin aut X-ray fluorescence scanning of discrete samples a new tool for the geochemical characterization of loess-paleosol sequences submitted by M.Sc. Jörn Profe Bremen 2017 1 Online-Ressource (vii, 159, viii-ix Blätter) Illustrationen Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Dissertation Universität Bremen 2018 Geochemistry, multivariate statistics, paleoclimatology, sediment archive, Pleistocene, Central Europe, sedimentology, chemostratigraphy. Loess-paleosol sequences (LPS) are among the most important terrestrial archives of paleoclimate for the Quaternary and provide valuable information about past environmental changes on millennial to multi-millennial time scales. Magnetic susceptibility and grain-size are proven as reliable proxies for pedogenesis and wind activity. Thus, to analyse these proxies, LPS are sampled in high spatial resolutions down to 2 cm. In contrast, geochemical data indicating weathering intensity, dust provenance and grain-size dynamics are often acquired with 10 cm resolution at best by using time- and cost-intensive quantitative analytical methods. However, results derived from X-ray fluorescence (XRF) scanning in the marine and lacustrine realm demonstrate that determining qualitative, relative changes in the elemental composition of a profile is generally sufficient to track paleoenvironmental changes at a high spatial resolution down to 100 micrometre. With the design of sample holders that allow measurements of discrete samples with an ITRAX XRF core-scanner, it becomes possible to exploit the unused potential of high-resolution samples previously taken for grain-size analysis as to geochemistry. Consequently, the aim of this study is to benchmark XRF scanning of discrete samples against other proxy data to evaluate the potential of high-resolution qualitative geochemistry unravelling weathering intensity, dust source changes and grain-size variations. For this purpose, three well-studied European LPS (Schwalbenberg II, Germany; Susak, Croatia; Süttö, Hungary) have been considered. They cover different time periods from Marine Isotope Stage (MIS) 7 to MIS 2 and are predominantly influenced either by oceanic, continental or Mediterranean climate respectively. Archivierung/Langzeitarchivierung gewährleistet pdager DE-101 Hochschulschrift (DE-588)4113937-9 (DE-627)105825778 (DE-576)209480580 gnd-content Universität Bremen Grad-verleihende Institution (DE-588)2001386-3 (DE-627)101380429 (DE-576)191575038 dgg Bremen (DE-588)4008135-7 (DE-627)106369636 (DE-576)208874569 uvp Erscheint auch als Druck-Ausgabe Profe, Jörn X-ray fluorescence scanning of discrete samples Bremen, 2017 vii, 159, viii-ix Blätter (DE-627)102940402X http://nbn-resolving.de/urn:nbn:de:gbv:46-00106653-12 Resolving-System kostenfrei Volltext http://nbn-resolving.de/urn:nbn:de:gbv:46-00106653-12 2018-09-05 Resolving-System Volltext http://d-nb.info/1165772167/34 2018-09-05 Langzeitarchivierung Nationalbibliothek Volltext http://elib.suub.uni-bremen.de/edocs/00106653-1.pdf 2018-09-05 Verlag kostenfrei Volltext GBV-ODiss GBV_ILN_20 ISIL_DE-84 SYSFLAG_1 GBV_KXP SSG-OPC-GGO GBV_ILN_21 ISIL_DE-46 GBV_ILN_22 ISIL_DE-18 GBV_ILN_23 ISIL_DE-830 GBV_ILN_30 ISIL_DE-104 GBV_ILN_40 ISIL_DE-7 GBV_ILN_60 ISIL_DE-705 GBV_ILN_63 ISIL_DE-Wim2 GBV_ILN_65 ISIL_DE-3 GBV_ILN_70 ISIL_DE-89 GBV_ILN_105 ISIL_DE-841 GBV_ILN_110 ISIL_DE-Luen4 GBV_ILN_132 ISIL_DE-959 GBV_ILN_151 ISIL_DE-546 GBV_ILN_161 ISIL_DE-960 GBV_ILN_293 ISIL_DE-960-3 GBV_ILN_370 ISIL_DE-1373 GBV_ILN_2403 ISIL_DE-LFER BO 20 01 0084 1802634029 x 07-09-18 21 01 0046 1798115735 ebook_2018_dissbremen Kostenloser Zugriff zza 24-08-18 22 01 0018 1802662227 SUBolrd xu 07-09-18 23 01 0830 1802710000 olr-d x 07-09-18 30 01 0104 1802751882 z 07-09-18 40 01 0007 1802762752 xsn 07-09-18 60 01 0705 1802776982 OLRD z 07-09-18 63 01 3401 1802817867 ORD x 07-09-18 65 01 0003 4168235823 GBV-ODiss Open Access z 17-07-22 70 01 0089 1802859640 zdo 07-09-18 105 01 0841 1803122854 z 07-09-18 110 01 3110 180290798X x 07-09-18 132 01 0959 1802922350 OLR-DISS x 07-09-18 151 01 0546 4159401074 OLR-ODISS z 30-06-22 161 01 0960 1802971459 ORD z 07-09-18 293 01 3293 1803105186 ORD z 07-09-18 370 01 4370 1803115963 x 07-09-18 2403 01 DE-LFER 3480316913 00 --%%-- --%%-- n --%%-- l01 31-05-19 20 01 0084 http://nbn-resolving.de/urn:nbn:de:gbv:46-00106653-12 21 01 0046 http://nbn-resolving.de/urn:nbn:de:gbv:46-00106653-12 LF 22 01 0018 http://nbn-resolving.de/urn:nbn:de:gbv:46-00106653-12 23 01 0830 http://nbn-resolving.de/urn:nbn:de:gbv:46-00106653-12 30 01 0104 http://nbn-resolving.de/urn:nbn:de:gbv:46-00106653-12 40 01 0007 http://nbn-resolving.de/urn:nbn:de:gbv:46-00106653-12 60 01 0705 http://nbn-resolving.de/urn:nbn:de:gbv:46-00106653-12 63 01 3401 E-Book http://nbn-resolving.de/urn:nbn:de:gbv:46-00106653-12 LF 65 01 0003 http://nbn-resolving.de/urn:nbn:de:gbv:46-00106653-12 70 01 0089 http://nbn-resolving.de/urn:nbn:de:gbv:46-00106653-12 105 01 0841 http://nbn-resolving.de/urn:nbn:de:gbv:46-00106653-12 110 01 3110 http://nbn-resolving.de/urn:nbn:de:gbv:46-00106653-12 132 01 0959 http://nbn-resolving.de/urn:nbn:de:gbv:46-00106653-12 151 01 0546 Volltext http://nbn-resolving.de/urn:nbn:de:gbv:46-00106653-12 161 01 0960 http://nbn-resolving.de/urn:nbn:de:gbv:46-00106653-12 293 01 3293 http://nbn-resolving.de/urn:nbn:de:gbv:46-00106653-12 370 01 4370 http://nbn-resolving.de/urn:nbn:de:gbv:46-00106653-12 2403 01 DE-LFER http://nbn-resolving.de/urn:nbn:de:gbv:46-00106653-12 21 00 DE-46 00 Universität Bremen 21 00 DE-46 00 Fachbereich 08: Sozialwissenschaften (FB 08) 21 00 DE-46 99 07 60 01 0705 10 ho 20 01 0084 OLRD 110 01 3110 OLRD 370 01 4370 OLRD 21 01 0046 ebook_2018_dissbremen 22 01 0018 SUBolrd 23 01 0830 olr-d 60 01 0705 OLRD 63 01 3401 ORD 65 01 0003 GBV-ODiss 132 01 0959 OLR-DISS 151 01 0546 OLR-ODISS 161 01 0960 ORD 293 01 3293 ORD 23 01 0830 2018-09-07:10:08:14
allfieldsGer	18,O09 dnb 1165772167 DE-101 urn:nbn:de:gbv:46-00106653-12 urn (DE-627)1029404143 (DE-599)GBV1029404143 (OCoLC)1057314779 DE-627 ger DE-627 rda eng XA-DE 550 DE-101 Profe, Jörn verfasserin aut X-ray fluorescence scanning of discrete samples a new tool for the geochemical characterization of loess-paleosol sequences submitted by M.Sc. Jörn Profe Bremen 2017 1 Online-Ressource (vii, 159, viii-ix Blätter) Illustrationen Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Dissertation Universität Bremen 2018 Geochemistry, multivariate statistics, paleoclimatology, sediment archive, Pleistocene, Central Europe, sedimentology, chemostratigraphy. Loess-paleosol sequences (LPS) are among the most important terrestrial archives of paleoclimate for the Quaternary and provide valuable information about past environmental changes on millennial to multi-millennial time scales. Magnetic susceptibility and grain-size are proven as reliable proxies for pedogenesis and wind activity. Thus, to analyse these proxies, LPS are sampled in high spatial resolutions down to 2 cm. In contrast, geochemical data indicating weathering intensity, dust provenance and grain-size dynamics are often acquired with 10 cm resolution at best by using time- and cost-intensive quantitative analytical methods. However, results derived from X-ray fluorescence (XRF) scanning in the marine and lacustrine realm demonstrate that determining qualitative, relative changes in the elemental composition of a profile is generally sufficient to track paleoenvironmental changes at a high spatial resolution down to 100 micrometre. With the design of sample holders that allow measurements of discrete samples with an ITRAX XRF core-scanner, it becomes possible to exploit the unused potential of high-resolution samples previously taken for grain-size analysis as to geochemistry. Consequently, the aim of this study is to benchmark XRF scanning of discrete samples against other proxy data to evaluate the potential of high-resolution qualitative geochemistry unravelling weathering intensity, dust source changes and grain-size variations. For this purpose, three well-studied European LPS (Schwalbenberg II, Germany; Susak, Croatia; Süttö, Hungary) have been considered. They cover different time periods from Marine Isotope Stage (MIS) 7 to MIS 2 and are predominantly influenced either by oceanic, continental or Mediterranean climate respectively. Archivierung/Langzeitarchivierung gewährleistet pdager DE-101 Hochschulschrift (DE-588)4113937-9 (DE-627)105825778 (DE-576)209480580 gnd-content Universität Bremen Grad-verleihende Institution (DE-588)2001386-3 (DE-627)101380429 (DE-576)191575038 dgg Bremen (DE-588)4008135-7 (DE-627)106369636 (DE-576)208874569 uvp Erscheint auch als Druck-Ausgabe Profe, Jörn X-ray fluorescence scanning of discrete samples Bremen, 2017 vii, 159, viii-ix Blätter (DE-627)102940402X http://nbn-resolving.de/urn:nbn:de:gbv:46-00106653-12 Resolving-System kostenfrei Volltext http://nbn-resolving.de/urn:nbn:de:gbv:46-00106653-12 2018-09-05 Resolving-System Volltext http://d-nb.info/1165772167/34 2018-09-05 Langzeitarchivierung Nationalbibliothek Volltext http://elib.suub.uni-bremen.de/edocs/00106653-1.pdf 2018-09-05 Verlag kostenfrei Volltext GBV-ODiss GBV_ILN_20 ISIL_DE-84 SYSFLAG_1 GBV_KXP SSG-OPC-GGO GBV_ILN_21 ISIL_DE-46 GBV_ILN_22 ISIL_DE-18 GBV_ILN_23 ISIL_DE-830 GBV_ILN_30 ISIL_DE-104 GBV_ILN_40 ISIL_DE-7 GBV_ILN_60 ISIL_DE-705 GBV_ILN_63 ISIL_DE-Wim2 GBV_ILN_65 ISIL_DE-3 GBV_ILN_70 ISIL_DE-89 GBV_ILN_105 ISIL_DE-841 GBV_ILN_110 ISIL_DE-Luen4 GBV_ILN_132 ISIL_DE-959 GBV_ILN_151 ISIL_DE-546 GBV_ILN_161 ISIL_DE-960 GBV_ILN_293 ISIL_DE-960-3 GBV_ILN_370 ISIL_DE-1373 GBV_ILN_2403 ISIL_DE-LFER BO 20 01 0084 1802634029 x 07-09-18 21 01 0046 1798115735 ebook_2018_dissbremen Kostenloser Zugriff zza 24-08-18 22 01 0018 1802662227 SUBolrd xu 07-09-18 23 01 0830 1802710000 olr-d x 07-09-18 30 01 0104 1802751882 z 07-09-18 40 01 0007 1802762752 xsn 07-09-18 60 01 0705 1802776982 OLRD z 07-09-18 63 01 3401 1802817867 ORD x 07-09-18 65 01 0003 4168235823 GBV-ODiss Open Access z 17-07-22 70 01 0089 1802859640 zdo 07-09-18 105 01 0841 1803122854 z 07-09-18 110 01 3110 180290798X x 07-09-18 132 01 0959 1802922350 OLR-DISS x 07-09-18 151 01 0546 4159401074 OLR-ODISS z 30-06-22 161 01 0960 1802971459 ORD z 07-09-18 293 01 3293 1803105186 ORD z 07-09-18 370 01 4370 1803115963 x 07-09-18 2403 01 DE-LFER 3480316913 00 --%%-- --%%-- n --%%-- l01 31-05-19 20 01 0084 http://nbn-resolving.de/urn:nbn:de:gbv:46-00106653-12 21 01 0046 http://nbn-resolving.de/urn:nbn:de:gbv:46-00106653-12 LF 22 01 0018 http://nbn-resolving.de/urn:nbn:de:gbv:46-00106653-12 23 01 0830 http://nbn-resolving.de/urn:nbn:de:gbv:46-00106653-12 30 01 0104 http://nbn-resolving.de/urn:nbn:de:gbv:46-00106653-12 40 01 0007 http://nbn-resolving.de/urn:nbn:de:gbv:46-00106653-12 60 01 0705 http://nbn-resolving.de/urn:nbn:de:gbv:46-00106653-12 63 01 3401 E-Book http://nbn-resolving.de/urn:nbn:de:gbv:46-00106653-12 LF 65 01 0003 http://nbn-resolving.de/urn:nbn:de:gbv:46-00106653-12 70 01 0089 http://nbn-resolving.de/urn:nbn:de:gbv:46-00106653-12 105 01 0841 http://nbn-resolving.de/urn:nbn:de:gbv:46-00106653-12 110 01 3110 http://nbn-resolving.de/urn:nbn:de:gbv:46-00106653-12 132 01 0959 http://nbn-resolving.de/urn:nbn:de:gbv:46-00106653-12 151 01 0546 Volltext http://nbn-resolving.de/urn:nbn:de:gbv:46-00106653-12 161 01 0960 http://nbn-resolving.de/urn:nbn:de:gbv:46-00106653-12 293 01 3293 http://nbn-resolving.de/urn:nbn:de:gbv:46-00106653-12 370 01 4370 http://nbn-resolving.de/urn:nbn:de:gbv:46-00106653-12 2403 01 DE-LFER http://nbn-resolving.de/urn:nbn:de:gbv:46-00106653-12 21 00 DE-46 00 Universität Bremen 21 00 DE-46 00 Fachbereich 08: Sozialwissenschaften (FB 08) 21 00 DE-46 99 07 60 01 0705 10 ho 20 01 0084 OLRD 110 01 3110 OLRD 370 01 4370 OLRD 21 01 0046 ebook_2018_dissbremen 22 01 0018 SUBolrd 23 01 0830 olr-d 60 01 0705 OLRD 63 01 3401 ORD 65 01 0003 GBV-ODiss 132 01 0959 OLR-DISS 151 01 0546 OLR-ODISS 161 01 0960 ORD 293 01 3293 ORD 23 01 0830 2018-09-07:10:08:14
allfieldsSound	18,O09 dnb 1165772167 DE-101 urn:nbn:de:gbv:46-00106653-12 urn (DE-627)1029404143 (DE-599)GBV1029404143 (OCoLC)1057314779 DE-627 ger DE-627 rda eng XA-DE 550 DE-101 Profe, Jörn verfasserin aut X-ray fluorescence scanning of discrete samples a new tool for the geochemical characterization of loess-paleosol sequences submitted by M.Sc. Jörn Profe Bremen 2017 1 Online-Ressource (vii, 159, viii-ix Blätter) Illustrationen Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Dissertation Universität Bremen 2018 Geochemistry, multivariate statistics, paleoclimatology, sediment archive, Pleistocene, Central Europe, sedimentology, chemostratigraphy. Loess-paleosol sequences (LPS) are among the most important terrestrial archives of paleoclimate for the Quaternary and provide valuable information about past environmental changes on millennial to multi-millennial time scales. Magnetic susceptibility and grain-size are proven as reliable proxies for pedogenesis and wind activity. Thus, to analyse these proxies, LPS are sampled in high spatial resolutions down to 2 cm. In contrast, geochemical data indicating weathering intensity, dust provenance and grain-size dynamics are often acquired with 10 cm resolution at best by using time- and cost-intensive quantitative analytical methods. However, results derived from X-ray fluorescence (XRF) scanning in the marine and lacustrine realm demonstrate that determining qualitative, relative changes in the elemental composition of a profile is generally sufficient to track paleoenvironmental changes at a high spatial resolution down to 100 micrometre. With the design of sample holders that allow measurements of discrete samples with an ITRAX XRF core-scanner, it becomes possible to exploit the unused potential of high-resolution samples previously taken for grain-size analysis as to geochemistry. Consequently, the aim of this study is to benchmark XRF scanning of discrete samples against other proxy data to evaluate the potential of high-resolution qualitative geochemistry unravelling weathering intensity, dust source changes and grain-size variations. For this purpose, three well-studied European LPS (Schwalbenberg II, Germany; Susak, Croatia; Süttö, Hungary) have been considered. They cover different time periods from Marine Isotope Stage (MIS) 7 to MIS 2 and are predominantly influenced either by oceanic, continental or Mediterranean climate respectively. 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title	X-ray fluorescence scanning of discrete samples a new tool for the geochemical characterization of loess-paleosol sequences
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title_full	X-ray fluorescence scanning of discrete samples a new tool for the geochemical characterization of loess-paleosol sequences submitted by M.Sc. Jörn Profe
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title_sub	a new tool for the geochemical characterization of loess-paleosol sequences
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title_sort	x-ray fluorescence scanning of discrete samplesa new tool for the geochemical characterization of loess-paleosol sequences
title_auth	X-ray fluorescence scanning of discrete samples a new tool for the geochemical characterization of loess-paleosol sequences
abstract	Geochemistry, multivariate statistics, paleoclimatology, sediment archive, Pleistocene, Central Europe, sedimentology, chemostratigraphy. Loess-paleosol sequences (LPS) are among the most important terrestrial archives of paleoclimate for the Quaternary and provide valuable information about past environmental changes on millennial to multi-millennial time scales. Magnetic susceptibility and grain-size are proven as reliable proxies for pedogenesis and wind activity. Thus, to analyse these proxies, LPS are sampled in high spatial resolutions down to 2 cm. In contrast, geochemical data indicating weathering intensity, dust provenance and grain-size dynamics are often acquired with 10 cm resolution at best by using time- and cost-intensive quantitative analytical methods. However, results derived from X-ray fluorescence (XRF) scanning in the marine and lacustrine realm demonstrate that determining qualitative, relative changes in the elemental composition of a profile is generally sufficient to track paleoenvironmental changes at a high spatial resolution down to 100 micrometre. With the design of sample holders that allow measurements of discrete samples with an ITRAX XRF core-scanner, it becomes possible to exploit the unused potential of high-resolution samples previously taken for grain-size analysis as to geochemistry. Consequently, the aim of this study is to benchmark XRF scanning of discrete samples against other proxy data to evaluate the potential of high-resolution qualitative geochemistry unravelling weathering intensity, dust source changes and grain-size variations. For this purpose, three well-studied European LPS (Schwalbenberg II, Germany; Susak, Croatia; Süttö, Hungary) have been considered. They cover different time periods from Marine Isotope Stage (MIS) 7 to MIS 2 and are predominantly influenced either by oceanic, continental or Mediterranean climate respectively.
abstractGer	Geochemistry, multivariate statistics, paleoclimatology, sediment archive, Pleistocene, Central Europe, sedimentology, chemostratigraphy. Loess-paleosol sequences (LPS) are among the most important terrestrial archives of paleoclimate for the Quaternary and provide valuable information about past environmental changes on millennial to multi-millennial time scales. Magnetic susceptibility and grain-size are proven as reliable proxies for pedogenesis and wind activity. Thus, to analyse these proxies, LPS are sampled in high spatial resolutions down to 2 cm. In contrast, geochemical data indicating weathering intensity, dust provenance and grain-size dynamics are often acquired with 10 cm resolution at best by using time- and cost-intensive quantitative analytical methods. However, results derived from X-ray fluorescence (XRF) scanning in the marine and lacustrine realm demonstrate that determining qualitative, relative changes in the elemental composition of a profile is generally sufficient to track paleoenvironmental changes at a high spatial resolution down to 100 micrometre. With the design of sample holders that allow measurements of discrete samples with an ITRAX XRF core-scanner, it becomes possible to exploit the unused potential of high-resolution samples previously taken for grain-size analysis as to geochemistry. Consequently, the aim of this study is to benchmark XRF scanning of discrete samples against other proxy data to evaluate the potential of high-resolution qualitative geochemistry unravelling weathering intensity, dust source changes and grain-size variations. For this purpose, three well-studied European LPS (Schwalbenberg II, Germany; Susak, Croatia; Süttö, Hungary) have been considered. They cover different time periods from Marine Isotope Stage (MIS) 7 to MIS 2 and are predominantly influenced either by oceanic, continental or Mediterranean climate respectively.
abstract_unstemmed	Geochemistry, multivariate statistics, paleoclimatology, sediment archive, Pleistocene, Central Europe, sedimentology, chemostratigraphy. Loess-paleosol sequences (LPS) are among the most important terrestrial archives of paleoclimate for the Quaternary and provide valuable information about past environmental changes on millennial to multi-millennial time scales. Magnetic susceptibility and grain-size are proven as reliable proxies for pedogenesis and wind activity. Thus, to analyse these proxies, LPS are sampled in high spatial resolutions down to 2 cm. In contrast, geochemical data indicating weathering intensity, dust provenance and grain-size dynamics are often acquired with 10 cm resolution at best by using time- and cost-intensive quantitative analytical methods. However, results derived from X-ray fluorescence (XRF) scanning in the marine and lacustrine realm demonstrate that determining qualitative, relative changes in the elemental composition of a profile is generally sufficient to track paleoenvironmental changes at a high spatial resolution down to 100 micrometre. With the design of sample holders that allow measurements of discrete samples with an ITRAX XRF core-scanner, it becomes possible to exploit the unused potential of high-resolution samples previously taken for grain-size analysis as to geochemistry. Consequently, the aim of this study is to benchmark XRF scanning of discrete samples against other proxy data to evaluate the potential of high-resolution qualitative geochemistry unravelling weathering intensity, dust source changes and grain-size variations. For this purpose, three well-studied European LPS (Schwalbenberg II, Germany; Susak, Croatia; Süttö, Hungary) have been considered. They cover different time periods from Marine Isotope Stage (MIS) 7 to MIS 2 and are predominantly influenced either by oceanic, continental or Mediterranean climate respectively.
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title_short	X-ray fluorescence scanning of discrete samples
url	http://nbn-resolving.de/urn:nbn:de:gbv:46-00106653-12 http://d-nb.info/1165772167/34 http://elib.suub.uni-bremen.de/edocs/00106653-1.pdf
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Magnetic susceptibility and grain-size are proven as reliable proxies for pedogenesis and wind activity. Thus, to analyse these proxies, LPS are sampled in high spatial resolutions down to 2 cm. In contrast, geochemical data indicating weathering intensity, dust provenance and grain-size dynamics are often acquired with 10 cm resolution at best by using time- and cost-intensive quantitative analytical methods. However, results derived from X-ray fluorescence (XRF) scanning in the marine and lacustrine realm demonstrate that determining qualitative, relative changes in the elemental composition of a profile is generally sufficient to track paleoenvironmental changes at a high spatial resolution down to 100 micrometre. With the design of sample holders that allow measurements of discrete samples with an ITRAX XRF core-scanner, it becomes possible to exploit the unused potential of high-resolution samples previously taken for grain-size analysis as to geochemistry. 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X-ray fluorescence scanning of discrete samples : a new tool for the geochemical characterization of loess-paleosol sequences

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