Petrology of spinel lherzolite xenoliths from Youkou volcano, Adamawa Massif, Cameroon Volcanic Line: mineralogical and geochemical fingerprints of sub-rift mantle processes
Abstract The basaltic maar of Youkou, situated in the Adamawa Volcanic Massif in the eastern branch of the continental segment of the Cameroon Volcanic Line, contains mantle-derived xenoliths of various types in pyroclastites. Spinel-bearing lherzolite xenoliths from the Youkou volcano generally exh...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
Njombie, Merlin Patrick Wagsong [verfasserIn] Temdjim, Robert [verfasserIn] Foley, Stephen F. [verfasserIn] |
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| Format: |
E-Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
2018 |
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| Schlagwörter: |
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| Übergeordnetes Werk: |
Enthalten in: Contributions to mineralogy and petrology - Berlin : Springer, 1947, 173(2018), 2 vom: 23. Jan. |
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| Übergeordnetes Werk: |
volume:173 ; year:2018 ; number:2 ; day:23 ; month:01 |
| Links: |
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| DOI / URN: |
10.1007/s00410-018-1438-5 |
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| Katalog-ID: |
SPR005259096 |
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| 100 | 1 | |a Njombie, Merlin Patrick Wagsong |e verfasserin |4 aut | |
| 245 | 1 | 0 | |a Petrology of spinel lherzolite xenoliths from Youkou volcano, Adamawa Massif, Cameroon Volcanic Line: mineralogical and geochemical fingerprints of sub-rift mantle processes |
| 264 | 1 | |c 2018 | |
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| 520 | |a Abstract The basaltic maar of Youkou, situated in the Adamawa Volcanic Massif in the eastern branch of the continental segment of the Cameroon Volcanic Line, contains mantle-derived xenoliths of various types in pyroclastites. Spinel-bearing lherzolite xenoliths from the Youkou volcano generally exhibit protogranular textures with olivine ($ Fo_{89.4−90.5} $), enstatite ($ En_{89 − 91} %$ Fs_{8.7−9.8} %$ Wo_{0.82−1.13} $), clinopyroxene, spinel (Cr#Sp = 9.4–13.8), and in some cases amphibole ($ Mg_{#} $ = 88.5–89.1). Mineral equilibration temperatures in the lherzolite xenoliths have been estimated from three–two pyroxene thermometers and range between 835 and 937 °C at pressures of 10–18 kbar, consistent with shallow mantle depths of around 32–58 km. Trends displayed by bulk-rock MgO correlate with $ Al_{2} %$ O_{3} $, indicating that the xenoliths are refractory mantle residues after partial melting. The degree of partial melting estimated from spinel compositions is less than 10%: evidences for much higher degrees of depletion are preserved in one sample, but overprinted by refertilization in others. Trace element compositions of the xenoliths are enriched in highly incompatible elements (LREE, Sr, Ba, and U), indicating that the spinel lherzolites underwent later cryptic metasomatic enrichment induced by plume-related hydrous silicate melts. The extreme fertility ($ Al_{2} %$ O_{3} $ = 6.07–6.56 wt% in clinopyroxene) and the low CaO/$ Al_{2} %$ O_{3} $ ratios in the spinel lherzolites suggest that they could not be a simple residue of partial melting of primitive mantle and must have experienced refertilization processes driven by the infiltration of carbonatite or carbonated silicate melts. | ||
| 650 | 4 | |a Cameroon Volcanic Line |7 (dpeaa)DE-He213 | |
| 650 | 4 | |a Adamawa Massif |7 (dpeaa)DE-He213 | |
| 650 | 4 | |a Youkou volcano maar |7 (dpeaa)DE-He213 | |
| 650 | 4 | |a Spinel lherzolite xenoliths |7 (dpeaa)DE-He213 | |
| 650 | 4 | |a Mantle metasomatism |7 (dpeaa)DE-He213 | |
| 650 | 4 | |a Refertilization |7 (dpeaa)DE-He213 | |
| 700 | 1 | |a Temdjim, Robert |e verfasserin |4 aut | |
| 700 | 1 | |a Foley, Stephen F. |e verfasserin |4 aut | |
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| 773 | 1 | 8 | |g volume:173 |g year:2018 |g number:2 |g day:23 |g month:01 |
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10.1007/s00410-018-1438-5 doi (DE-627)SPR005259096 (SPR)s00410-018-1438-5-e DE-627 ger DE-627 rakwb eng 550 ASE 38.25 bkl 38.30 bkl Njombie, Merlin Patrick Wagsong verfasserin aut Petrology of spinel lherzolite xenoliths from Youkou volcano, Adamawa Massif, Cameroon Volcanic Line: mineralogical and geochemical fingerprints of sub-rift mantle processes 2018 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Abstract The basaltic maar of Youkou, situated in the Adamawa Volcanic Massif in the eastern branch of the continental segment of the Cameroon Volcanic Line, contains mantle-derived xenoliths of various types in pyroclastites. Spinel-bearing lherzolite xenoliths from the Youkou volcano generally exhibit protogranular textures with olivine ($ Fo_{89.4−90.5} $), enstatite ($ En_{89 − 91} %$ Fs_{8.7−9.8} %$ Wo_{0.82−1.13} $), clinopyroxene, spinel (Cr#Sp = 9.4–13.8), and in some cases amphibole ($ Mg_{#} $ = 88.5–89.1). Mineral equilibration temperatures in the lherzolite xenoliths have been estimated from three–two pyroxene thermometers and range between 835 and 937 °C at pressures of 10–18 kbar, consistent with shallow mantle depths of around 32–58 km. Trends displayed by bulk-rock MgO correlate with $ Al_{2} %$ O_{3} $, indicating that the xenoliths are refractory mantle residues after partial melting. The degree of partial melting estimated from spinel compositions is less than 10%: evidences for much higher degrees of depletion are preserved in one sample, but overprinted by refertilization in others. Trace element compositions of the xenoliths are enriched in highly incompatible elements (LREE, Sr, Ba, and U), indicating that the spinel lherzolites underwent later cryptic metasomatic enrichment induced by plume-related hydrous silicate melts. The extreme fertility ($ Al_{2} %$ O_{3} $ = 6.07–6.56 wt% in clinopyroxene) and the low CaO/$ Al_{2} %$ O_{3} $ ratios in the spinel lherzolites suggest that they could not be a simple residue of partial melting of primitive mantle and must have experienced refertilization processes driven by the infiltration of carbonatite or carbonated silicate melts. Cameroon Volcanic Line (dpeaa)DE-He213 Adamawa Massif (dpeaa)DE-He213 Youkou volcano maar (dpeaa)DE-He213 Spinel lherzolite xenoliths (dpeaa)DE-He213 Mantle metasomatism (dpeaa)DE-He213 Refertilization (dpeaa)DE-He213 Temdjim, Robert verfasserin aut Foley, Stephen F. verfasserin aut Enthalten in Contributions to mineralogy and petrology Berlin : Springer, 1947 173(2018), 2 vom: 23. Jan. (DE-627)25372208X (DE-600)1458979-5 1432-0967 nnns volume:173 year:2018 number:2 day:23 month:01 https://dx.doi.org/10.1007/s00410-018-1438-5 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OPC-GGO SSG-OPC-ASE GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_150 GBV_ILN_151 GBV_ILN_152 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_187 GBV_ILN_206 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_250 GBV_ILN_267 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_381 GBV_ILN_602 GBV_ILN_636 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2070 GBV_ILN_2086 GBV_ILN_2088 GBV_ILN_2093 GBV_ILN_2106 GBV_ILN_2107 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2116 GBV_ILN_2118 GBV_ILN_2119 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2188 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2446 GBV_ILN_2470 GBV_ILN_2472 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_2548 GBV_ILN_4012 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4328 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 38.25 ASE 38.30 ASE AR 173 2018 2 23 01 |
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10.1007/s00410-018-1438-5 doi (DE-627)SPR005259096 (SPR)s00410-018-1438-5-e DE-627 ger DE-627 rakwb eng 550 ASE 38.25 bkl 38.30 bkl Njombie, Merlin Patrick Wagsong verfasserin aut Petrology of spinel lherzolite xenoliths from Youkou volcano, Adamawa Massif, Cameroon Volcanic Line: mineralogical and geochemical fingerprints of sub-rift mantle processes 2018 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Abstract The basaltic maar of Youkou, situated in the Adamawa Volcanic Massif in the eastern branch of the continental segment of the Cameroon Volcanic Line, contains mantle-derived xenoliths of various types in pyroclastites. Spinel-bearing lherzolite xenoliths from the Youkou volcano generally exhibit protogranular textures with olivine ($ Fo_{89.4−90.5} $), enstatite ($ En_{89 − 91} %$ Fs_{8.7−9.8} %$ Wo_{0.82−1.13} $), clinopyroxene, spinel (Cr#Sp = 9.4–13.8), and in some cases amphibole ($ Mg_{#} $ = 88.5–89.1). Mineral equilibration temperatures in the lherzolite xenoliths have been estimated from three–two pyroxene thermometers and range between 835 and 937 °C at pressures of 10–18 kbar, consistent with shallow mantle depths of around 32–58 km. Trends displayed by bulk-rock MgO correlate with $ Al_{2} %$ O_{3} $, indicating that the xenoliths are refractory mantle residues after partial melting. The degree of partial melting estimated from spinel compositions is less than 10%: evidences for much higher degrees of depletion are preserved in one sample, but overprinted by refertilization in others. Trace element compositions of the xenoliths are enriched in highly incompatible elements (LREE, Sr, Ba, and U), indicating that the spinel lherzolites underwent later cryptic metasomatic enrichment induced by plume-related hydrous silicate melts. The extreme fertility ($ Al_{2} %$ O_{3} $ = 6.07–6.56 wt% in clinopyroxene) and the low CaO/$ Al_{2} %$ O_{3} $ ratios in the spinel lherzolites suggest that they could not be a simple residue of partial melting of primitive mantle and must have experienced refertilization processes driven by the infiltration of carbonatite or carbonated silicate melts. Cameroon Volcanic Line (dpeaa)DE-He213 Adamawa Massif (dpeaa)DE-He213 Youkou volcano maar (dpeaa)DE-He213 Spinel lherzolite xenoliths (dpeaa)DE-He213 Mantle metasomatism (dpeaa)DE-He213 Refertilization (dpeaa)DE-He213 Temdjim, Robert verfasserin aut Foley, Stephen F. verfasserin aut Enthalten in Contributions to mineralogy and petrology Berlin : Springer, 1947 173(2018), 2 vom: 23. Jan. (DE-627)25372208X (DE-600)1458979-5 1432-0967 nnns volume:173 year:2018 number:2 day:23 month:01 https://dx.doi.org/10.1007/s00410-018-1438-5 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OPC-GGO SSG-OPC-ASE GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_150 GBV_ILN_151 GBV_ILN_152 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_187 GBV_ILN_206 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_250 GBV_ILN_267 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_381 GBV_ILN_602 GBV_ILN_636 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2070 GBV_ILN_2086 GBV_ILN_2088 GBV_ILN_2093 GBV_ILN_2106 GBV_ILN_2107 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2116 GBV_ILN_2118 GBV_ILN_2119 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2188 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2446 GBV_ILN_2470 GBV_ILN_2472 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_2548 GBV_ILN_4012 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4328 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 38.25 ASE 38.30 ASE AR 173 2018 2 23 01 |
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10.1007/s00410-018-1438-5 doi (DE-627)SPR005259096 (SPR)s00410-018-1438-5-e DE-627 ger DE-627 rakwb eng 550 ASE 38.25 bkl 38.30 bkl Njombie, Merlin Patrick Wagsong verfasserin aut Petrology of spinel lherzolite xenoliths from Youkou volcano, Adamawa Massif, Cameroon Volcanic Line: mineralogical and geochemical fingerprints of sub-rift mantle processes 2018 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Abstract The basaltic maar of Youkou, situated in the Adamawa Volcanic Massif in the eastern branch of the continental segment of the Cameroon Volcanic Line, contains mantle-derived xenoliths of various types in pyroclastites. Spinel-bearing lherzolite xenoliths from the Youkou volcano generally exhibit protogranular textures with olivine ($ Fo_{89.4−90.5} $), enstatite ($ En_{89 − 91} %$ Fs_{8.7−9.8} %$ Wo_{0.82−1.13} $), clinopyroxene, spinel (Cr#Sp = 9.4–13.8), and in some cases amphibole ($ Mg_{#} $ = 88.5–89.1). Mineral equilibration temperatures in the lherzolite xenoliths have been estimated from three–two pyroxene thermometers and range between 835 and 937 °C at pressures of 10–18 kbar, consistent with shallow mantle depths of around 32–58 km. Trends displayed by bulk-rock MgO correlate with $ Al_{2} %$ O_{3} $, indicating that the xenoliths are refractory mantle residues after partial melting. The degree of partial melting estimated from spinel compositions is less than 10%: evidences for much higher degrees of depletion are preserved in one sample, but overprinted by refertilization in others. Trace element compositions of the xenoliths are enriched in highly incompatible elements (LREE, Sr, Ba, and U), indicating that the spinel lherzolites underwent later cryptic metasomatic enrichment induced by plume-related hydrous silicate melts. The extreme fertility ($ Al_{2} %$ O_{3} $ = 6.07–6.56 wt% in clinopyroxene) and the low CaO/$ Al_{2} %$ O_{3} $ ratios in the spinel lherzolites suggest that they could not be a simple residue of partial melting of primitive mantle and must have experienced refertilization processes driven by the infiltration of carbonatite or carbonated silicate melts. Cameroon Volcanic Line (dpeaa)DE-He213 Adamawa Massif (dpeaa)DE-He213 Youkou volcano maar (dpeaa)DE-He213 Spinel lherzolite xenoliths (dpeaa)DE-He213 Mantle metasomatism (dpeaa)DE-He213 Refertilization (dpeaa)DE-He213 Temdjim, Robert verfasserin aut Foley, Stephen F. verfasserin aut Enthalten in Contributions to mineralogy and petrology Berlin : Springer, 1947 173(2018), 2 vom: 23. Jan. (DE-627)25372208X (DE-600)1458979-5 1432-0967 nnns volume:173 year:2018 number:2 day:23 month:01 https://dx.doi.org/10.1007/s00410-018-1438-5 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OPC-GGO SSG-OPC-ASE GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_150 GBV_ILN_151 GBV_ILN_152 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_187 GBV_ILN_206 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_250 GBV_ILN_267 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_381 GBV_ILN_602 GBV_ILN_636 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2070 GBV_ILN_2086 GBV_ILN_2088 GBV_ILN_2093 GBV_ILN_2106 GBV_ILN_2107 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2116 GBV_ILN_2118 GBV_ILN_2119 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2188 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2446 GBV_ILN_2470 GBV_ILN_2472 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_2548 GBV_ILN_4012 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4328 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 38.25 ASE 38.30 ASE AR 173 2018 2 23 01 |
| allfieldsGer |
10.1007/s00410-018-1438-5 doi (DE-627)SPR005259096 (SPR)s00410-018-1438-5-e DE-627 ger DE-627 rakwb eng 550 ASE 38.25 bkl 38.30 bkl Njombie, Merlin Patrick Wagsong verfasserin aut Petrology of spinel lherzolite xenoliths from Youkou volcano, Adamawa Massif, Cameroon Volcanic Line: mineralogical and geochemical fingerprints of sub-rift mantle processes 2018 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Abstract The basaltic maar of Youkou, situated in the Adamawa Volcanic Massif in the eastern branch of the continental segment of the Cameroon Volcanic Line, contains mantle-derived xenoliths of various types in pyroclastites. Spinel-bearing lherzolite xenoliths from the Youkou volcano generally exhibit protogranular textures with olivine ($ Fo_{89.4−90.5} $), enstatite ($ En_{89 − 91} %$ Fs_{8.7−9.8} %$ Wo_{0.82−1.13} $), clinopyroxene, spinel (Cr#Sp = 9.4–13.8), and in some cases amphibole ($ Mg_{#} $ = 88.5–89.1). Mineral equilibration temperatures in the lherzolite xenoliths have been estimated from three–two pyroxene thermometers and range between 835 and 937 °C at pressures of 10–18 kbar, consistent with shallow mantle depths of around 32–58 km. Trends displayed by bulk-rock MgO correlate with $ Al_{2} %$ O_{3} $, indicating that the xenoliths are refractory mantle residues after partial melting. The degree of partial melting estimated from spinel compositions is less than 10%: evidences for much higher degrees of depletion are preserved in one sample, but overprinted by refertilization in others. Trace element compositions of the xenoliths are enriched in highly incompatible elements (LREE, Sr, Ba, and U), indicating that the spinel lherzolites underwent later cryptic metasomatic enrichment induced by plume-related hydrous silicate melts. The extreme fertility ($ Al_{2} %$ O_{3} $ = 6.07–6.56 wt% in clinopyroxene) and the low CaO/$ Al_{2} %$ O_{3} $ ratios in the spinel lherzolites suggest that they could not be a simple residue of partial melting of primitive mantle and must have experienced refertilization processes driven by the infiltration of carbonatite or carbonated silicate melts. Cameroon Volcanic Line (dpeaa)DE-He213 Adamawa Massif (dpeaa)DE-He213 Youkou volcano maar (dpeaa)DE-He213 Spinel lherzolite xenoliths (dpeaa)DE-He213 Mantle metasomatism (dpeaa)DE-He213 Refertilization (dpeaa)DE-He213 Temdjim, Robert verfasserin aut Foley, Stephen F. verfasserin aut Enthalten in Contributions to mineralogy and petrology Berlin : Springer, 1947 173(2018), 2 vom: 23. Jan. (DE-627)25372208X (DE-600)1458979-5 1432-0967 nnns volume:173 year:2018 number:2 day:23 month:01 https://dx.doi.org/10.1007/s00410-018-1438-5 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OPC-GGO SSG-OPC-ASE GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_150 GBV_ILN_151 GBV_ILN_152 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_187 GBV_ILN_206 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_250 GBV_ILN_267 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_381 GBV_ILN_602 GBV_ILN_636 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2070 GBV_ILN_2086 GBV_ILN_2088 GBV_ILN_2093 GBV_ILN_2106 GBV_ILN_2107 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2116 GBV_ILN_2118 GBV_ILN_2119 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2188 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2446 GBV_ILN_2470 GBV_ILN_2472 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_2548 GBV_ILN_4012 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4328 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 38.25 ASE 38.30 ASE AR 173 2018 2 23 01 |
| allfieldsSound |
10.1007/s00410-018-1438-5 doi (DE-627)SPR005259096 (SPR)s00410-018-1438-5-e DE-627 ger DE-627 rakwb eng 550 ASE 38.25 bkl 38.30 bkl Njombie, Merlin Patrick Wagsong verfasserin aut Petrology of spinel lherzolite xenoliths from Youkou volcano, Adamawa Massif, Cameroon Volcanic Line: mineralogical and geochemical fingerprints of sub-rift mantle processes 2018 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Abstract The basaltic maar of Youkou, situated in the Adamawa Volcanic Massif in the eastern branch of the continental segment of the Cameroon Volcanic Line, contains mantle-derived xenoliths of various types in pyroclastites. Spinel-bearing lherzolite xenoliths from the Youkou volcano generally exhibit protogranular textures with olivine ($ Fo_{89.4−90.5} $), enstatite ($ En_{89 − 91} %$ Fs_{8.7−9.8} %$ Wo_{0.82−1.13} $), clinopyroxene, spinel (Cr#Sp = 9.4–13.8), and in some cases amphibole ($ Mg_{#} $ = 88.5–89.1). Mineral equilibration temperatures in the lherzolite xenoliths have been estimated from three–two pyroxene thermometers and range between 835 and 937 °C at pressures of 10–18 kbar, consistent with shallow mantle depths of around 32–58 km. Trends displayed by bulk-rock MgO correlate with $ Al_{2} %$ O_{3} $, indicating that the xenoliths are refractory mantle residues after partial melting. The degree of partial melting estimated from spinel compositions is less than 10%: evidences for much higher degrees of depletion are preserved in one sample, but overprinted by refertilization in others. Trace element compositions of the xenoliths are enriched in highly incompatible elements (LREE, Sr, Ba, and U), indicating that the spinel lherzolites underwent later cryptic metasomatic enrichment induced by plume-related hydrous silicate melts. The extreme fertility ($ Al_{2} %$ O_{3} $ = 6.07–6.56 wt% in clinopyroxene) and the low CaO/$ Al_{2} %$ O_{3} $ ratios in the spinel lherzolites suggest that they could not be a simple residue of partial melting of primitive mantle and must have experienced refertilization processes driven by the infiltration of carbonatite or carbonated silicate melts. Cameroon Volcanic Line (dpeaa)DE-He213 Adamawa Massif (dpeaa)DE-He213 Youkou volcano maar (dpeaa)DE-He213 Spinel lherzolite xenoliths (dpeaa)DE-He213 Mantle metasomatism (dpeaa)DE-He213 Refertilization (dpeaa)DE-He213 Temdjim, Robert verfasserin aut Foley, Stephen F. verfasserin aut Enthalten in Contributions to mineralogy and petrology Berlin : Springer, 1947 173(2018), 2 vom: 23. Jan. (DE-627)25372208X (DE-600)1458979-5 1432-0967 nnns volume:173 year:2018 number:2 day:23 month:01 https://dx.doi.org/10.1007/s00410-018-1438-5 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OPC-GGO SSG-OPC-ASE GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_150 GBV_ILN_151 GBV_ILN_152 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_187 GBV_ILN_206 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_250 GBV_ILN_267 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_381 GBV_ILN_602 GBV_ILN_636 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2070 GBV_ILN_2086 GBV_ILN_2088 GBV_ILN_2093 GBV_ILN_2106 GBV_ILN_2107 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2116 GBV_ILN_2118 GBV_ILN_2119 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2188 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2446 GBV_ILN_2470 GBV_ILN_2472 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_2548 GBV_ILN_4012 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4328 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 38.25 ASE 38.30 ASE AR 173 2018 2 23 01 |
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Enthalten in Contributions to mineralogy and petrology 173(2018), 2 vom: 23. Jan. volume:173 year:2018 number:2 day:23 month:01 |
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Cameroon Volcanic Line Adamawa Massif Youkou volcano maar Spinel lherzolite xenoliths Mantle metasomatism Refertilization |
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Njombie, Merlin Patrick Wagsong @@aut@@ Temdjim, Robert @@aut@@ Foley, Stephen F. @@aut@@ |
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|
| author |
Njombie, Merlin Patrick Wagsong |
| spellingShingle |
Njombie, Merlin Patrick Wagsong ddc 550 bkl 38.25 bkl 38.30 misc Cameroon Volcanic Line misc Adamawa Massif misc Youkou volcano maar misc Spinel lherzolite xenoliths misc Mantle metasomatism misc Refertilization Petrology of spinel lherzolite xenoliths from Youkou volcano, Adamawa Massif, Cameroon Volcanic Line: mineralogical and geochemical fingerprints of sub-rift mantle processes |
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Njombie, Merlin Patrick Wagsong |
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1432-0967 |
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550 ASE 38.25 bkl 38.30 bkl Petrology of spinel lherzolite xenoliths from Youkou volcano, Adamawa Massif, Cameroon Volcanic Line: mineralogical and geochemical fingerprints of sub-rift mantle processes Cameroon Volcanic Line (dpeaa)DE-He213 Adamawa Massif (dpeaa)DE-He213 Youkou volcano maar (dpeaa)DE-He213 Spinel lherzolite xenoliths (dpeaa)DE-He213 Mantle metasomatism (dpeaa)DE-He213 Refertilization (dpeaa)DE-He213 |
| topic |
ddc 550 bkl 38.25 bkl 38.30 misc Cameroon Volcanic Line misc Adamawa Massif misc Youkou volcano maar misc Spinel lherzolite xenoliths misc Mantle metasomatism misc Refertilization |
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ddc 550 bkl 38.25 bkl 38.30 misc Cameroon Volcanic Line misc Adamawa Massif misc Youkou volcano maar misc Spinel lherzolite xenoliths misc Mantle metasomatism misc Refertilization |
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ddc 550 bkl 38.25 bkl 38.30 misc Cameroon Volcanic Line misc Adamawa Massif misc Youkou volcano maar misc Spinel lherzolite xenoliths misc Mantle metasomatism misc Refertilization |
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| title |
Petrology of spinel lherzolite xenoliths from Youkou volcano, Adamawa Massif, Cameroon Volcanic Line: mineralogical and geochemical fingerprints of sub-rift mantle processes |
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(DE-627)SPR005259096 (SPR)s00410-018-1438-5-e |
| title_full |
Petrology of spinel lherzolite xenoliths from Youkou volcano, Adamawa Massif, Cameroon Volcanic Line: mineralogical and geochemical fingerprints of sub-rift mantle processes |
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Njombie, Merlin Patrick Wagsong |
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Contributions to mineralogy and petrology |
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Contributions to mineralogy and petrology |
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Njombie, Merlin Patrick Wagsong Temdjim, Robert Foley, Stephen F. |
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550 ASE 38.25 bkl 38.30 bkl |
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Njombie, Merlin Patrick Wagsong |
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10.1007/s00410-018-1438-5 |
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550 |
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verfasserin |
| title_sort |
petrology of spinel lherzolite xenoliths from youkou volcano, adamawa massif, cameroon volcanic line: mineralogical and geochemical fingerprints of sub-rift mantle processes |
| title_auth |
Petrology of spinel lherzolite xenoliths from Youkou volcano, Adamawa Massif, Cameroon Volcanic Line: mineralogical and geochemical fingerprints of sub-rift mantle processes |
| abstract |
Abstract The basaltic maar of Youkou, situated in the Adamawa Volcanic Massif in the eastern branch of the continental segment of the Cameroon Volcanic Line, contains mantle-derived xenoliths of various types in pyroclastites. Spinel-bearing lherzolite xenoliths from the Youkou volcano generally exhibit protogranular textures with olivine ($ Fo_{89.4−90.5} $), enstatite ($ En_{89 − 91} %$ Fs_{8.7−9.8} %$ Wo_{0.82−1.13} $), clinopyroxene, spinel (Cr#Sp = 9.4–13.8), and in some cases amphibole ($ Mg_{#} $ = 88.5–89.1). Mineral equilibration temperatures in the lherzolite xenoliths have been estimated from three–two pyroxene thermometers and range between 835 and 937 °C at pressures of 10–18 kbar, consistent with shallow mantle depths of around 32–58 km. Trends displayed by bulk-rock MgO correlate with $ Al_{2} %$ O_{3} $, indicating that the xenoliths are refractory mantle residues after partial melting. The degree of partial melting estimated from spinel compositions is less than 10%: evidences for much higher degrees of depletion are preserved in one sample, but overprinted by refertilization in others. Trace element compositions of the xenoliths are enriched in highly incompatible elements (LREE, Sr, Ba, and U), indicating that the spinel lherzolites underwent later cryptic metasomatic enrichment induced by plume-related hydrous silicate melts. The extreme fertility ($ Al_{2} %$ O_{3} $ = 6.07–6.56 wt% in clinopyroxene) and the low CaO/$ Al_{2} %$ O_{3} $ ratios in the spinel lherzolites suggest that they could not be a simple residue of partial melting of primitive mantle and must have experienced refertilization processes driven by the infiltration of carbonatite or carbonated silicate melts. |
| abstractGer |
Abstract The basaltic maar of Youkou, situated in the Adamawa Volcanic Massif in the eastern branch of the continental segment of the Cameroon Volcanic Line, contains mantle-derived xenoliths of various types in pyroclastites. Spinel-bearing lherzolite xenoliths from the Youkou volcano generally exhibit protogranular textures with olivine ($ Fo_{89.4−90.5} $), enstatite ($ En_{89 − 91} %$ Fs_{8.7−9.8} %$ Wo_{0.82−1.13} $), clinopyroxene, spinel (Cr#Sp = 9.4–13.8), and in some cases amphibole ($ Mg_{#} $ = 88.5–89.1). Mineral equilibration temperatures in the lherzolite xenoliths have been estimated from three–two pyroxene thermometers and range between 835 and 937 °C at pressures of 10–18 kbar, consistent with shallow mantle depths of around 32–58 km. Trends displayed by bulk-rock MgO correlate with $ Al_{2} %$ O_{3} $, indicating that the xenoliths are refractory mantle residues after partial melting. The degree of partial melting estimated from spinel compositions is less than 10%: evidences for much higher degrees of depletion are preserved in one sample, but overprinted by refertilization in others. Trace element compositions of the xenoliths are enriched in highly incompatible elements (LREE, Sr, Ba, and U), indicating that the spinel lherzolites underwent later cryptic metasomatic enrichment induced by plume-related hydrous silicate melts. The extreme fertility ($ Al_{2} %$ O_{3} $ = 6.07–6.56 wt% in clinopyroxene) and the low CaO/$ Al_{2} %$ O_{3} $ ratios in the spinel lherzolites suggest that they could not be a simple residue of partial melting of primitive mantle and must have experienced refertilization processes driven by the infiltration of carbonatite or carbonated silicate melts. |
| abstract_unstemmed |
Abstract The basaltic maar of Youkou, situated in the Adamawa Volcanic Massif in the eastern branch of the continental segment of the Cameroon Volcanic Line, contains mantle-derived xenoliths of various types in pyroclastites. Spinel-bearing lherzolite xenoliths from the Youkou volcano generally exhibit protogranular textures with olivine ($ Fo_{89.4−90.5} $), enstatite ($ En_{89 − 91} %$ Fs_{8.7−9.8} %$ Wo_{0.82−1.13} $), clinopyroxene, spinel (Cr#Sp = 9.4–13.8), and in some cases amphibole ($ Mg_{#} $ = 88.5–89.1). Mineral equilibration temperatures in the lherzolite xenoliths have been estimated from three–two pyroxene thermometers and range between 835 and 937 °C at pressures of 10–18 kbar, consistent with shallow mantle depths of around 32–58 km. Trends displayed by bulk-rock MgO correlate with $ Al_{2} %$ O_{3} $, indicating that the xenoliths are refractory mantle residues after partial melting. The degree of partial melting estimated from spinel compositions is less than 10%: evidences for much higher degrees of depletion are preserved in one sample, but overprinted by refertilization in others. Trace element compositions of the xenoliths are enriched in highly incompatible elements (LREE, Sr, Ba, and U), indicating that the spinel lherzolites underwent later cryptic metasomatic enrichment induced by plume-related hydrous silicate melts. The extreme fertility ($ Al_{2} %$ O_{3} $ = 6.07–6.56 wt% in clinopyroxene) and the low CaO/$ Al_{2} %$ O_{3} $ ratios in the spinel lherzolites suggest that they could not be a simple residue of partial melting of primitive mantle and must have experienced refertilization processes driven by the infiltration of carbonatite or carbonated silicate melts. |
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2 |
| title_short |
Petrology of spinel lherzolite xenoliths from Youkou volcano, Adamawa Massif, Cameroon Volcanic Line: mineralogical and geochemical fingerprints of sub-rift mantle processes |
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https://dx.doi.org/10.1007/s00410-018-1438-5 |
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Temdjim, Robert Foley, Stephen F. |
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Temdjim, Robert Foley, Stephen F. |
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| doi_str |
10.1007/s00410-018-1438-5 |
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2024-07-03T15:06:06.263Z |
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1803570817285488640 |
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| score |
7.4010344 |