Trace element geochemistry of ordinary chondrite chondrules: The type I/type II chondrule dichotomy

We report trace element concentrations of silicate phases in chondrules from LL3 ordinary chondrites Bishunpur and Semarkona. Results are similar to previously reported data for carbonaceous chondrites, with rare earth element (REE) concentrations increasing in the sequence olivine < pyroxene <...
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Autor*in:	Jacquet, Emmanuel [verfasserIn] Alard, Olivier Gounelle, Matthieu

Format:	Artikel
Sprache:	Englisch

Erschienen:	2015

Schlagwörter:	Earth and Planetary Astrophysics Astrophysics

Systematik:	TE 1000

Übergeordnetes Werk:	Enthalten in: Geochimica et cosmochimica acta - New York, NY : Elsevier Science, 1951, 155(2015), Seite 47-67
Übergeordnetes Werk:	volume:155 ; year:2015 ; pages:47-67

Links:	Volltext Link aufrufen

DOI / URN:	10.1016/j.gca.2015.02.005

Katalog-ID:	OLC1965665950

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520			\|a We report trace element concentrations of silicate phases in chondrules from LL3 ordinary chondrites Bishunpur and Semarkona. Results are similar to previously reported data for carbonaceous chondrites, with rare earth element (REE) concentrations increasing in the sequence olivine < pyroxene < mesostasis, and heavy REE (HREE) being enriched by 1-2 orders of magnitude (CI-normalized) relative to light REE (LREE) in ferromagnesian silicates, although no single olivine with very large LREE/HREE fractionation has been found. On average, olivine in type II chondrules is poorer in refractory lithophile incompatible elements (such as REE) than its type I counterpart by a factor of ~2. This suggests that olivine in type I and II chondrules formed by batch and fractional crystallization, respectively, implying that type II chondrules formed under faster cooling rates (> ~ 10 K/h) than type I chondrules. Appreciable Na concentrations (3-221 ppm) are measured in olivine from both chondrule types; type II chondrules seem to have behaved as closed systems, which may require chondrule formation in the vicinity of protoplanets or planetesimals. At any rate, higher solid concentrations in type II chondrule forming regions may explain the higher oxygen fugacities they record compared to type I chondrules. Type I and type II chondrules formed in different environments and the correlation between high solid concentrations and/or oxygen fugacities with rapid cooling rates is a key constraint that chondrule formation models must account for.
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allfields	10.1016/j.gca.2015.02.005 doi PQ20160617 (DE-627)OLC1965665950 (DE-599)GBVOLC1965665950 (PRQ)a1404-73de5e27d30af09314de0ff1a4c10e8ad44703b575707e9d06b7e8e65710cb000 (KEY)0047876820150000155000000047traceelementgeochemistryofordinarychondritechondru DE-627 ger DE-627 rakwb eng 550 DNB TE 1000 AVZ rvk Jacquet, Emmanuel verfasserin aut Trace element geochemistry of ordinary chondrite chondrules: The type I/type II chondrule dichotomy 2015 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier We report trace element concentrations of silicate phases in chondrules from LL3 ordinary chondrites Bishunpur and Semarkona. Results are similar to previously reported data for carbonaceous chondrites, with rare earth element (REE) concentrations increasing in the sequence olivine < pyroxene < mesostasis, and heavy REE (HREE) being enriched by 1-2 orders of magnitude (CI-normalized) relative to light REE (LREE) in ferromagnesian silicates, although no single olivine with very large LREE/HREE fractionation has been found. On average, olivine in type II chondrules is poorer in refractory lithophile incompatible elements (such as REE) than its type I counterpart by a factor of ~2. This suggests that olivine in type I and II chondrules formed by batch and fractional crystallization, respectively, implying that type II chondrules formed under faster cooling rates (> ~ 10 K/h) than type I chondrules. Appreciable Na concentrations (3-221 ppm) are measured in olivine from both chondrule types; type II chondrules seem to have behaved as closed systems, which may require chondrule formation in the vicinity of protoplanets or planetesimals. At any rate, higher solid concentrations in type II chondrule forming regions may explain the higher oxygen fugacities they record compared to type I chondrules. Type I and type II chondrules formed in different environments and the correlation between high solid concentrations and/or oxygen fugacities with rapid cooling rates is a key constraint that chondrule formation models must account for. Earth and Planetary Astrophysics Astrophysics Alard, Olivier oth Gounelle, Matthieu oth Enthalten in Geochimica et cosmochimica acta New York, NY : Elsevier Science, 1951 155(2015), Seite 47-67 (DE-627)129882968 (DE-600)300305-X (DE-576)015179354 0016-7037 nnns volume:155 year:2015 pages:47-67 http://dx.doi.org/10.1016/j.gca.2015.02.005 Volltext http://arxiv.org/abs/1503.03241 GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-GEO SSG-OLC-AST SSG-OPC-GGO SSG-OPC-AST GBV_ILN_21 GBV_ILN_62 GBV_ILN_70 GBV_ILN_154 GBV_ILN_188 GBV_ILN_600 GBV_ILN_2027 GBV_ILN_2279 GBV_ILN_4323 TE 1000 AR 155 2015 47-67
spelling	10.1016/j.gca.2015.02.005 doi PQ20160617 (DE-627)OLC1965665950 (DE-599)GBVOLC1965665950 (PRQ)a1404-73de5e27d30af09314de0ff1a4c10e8ad44703b575707e9d06b7e8e65710cb000 (KEY)0047876820150000155000000047traceelementgeochemistryofordinarychondritechondru DE-627 ger DE-627 rakwb eng 550 DNB TE 1000 AVZ rvk Jacquet, Emmanuel verfasserin aut Trace element geochemistry of ordinary chondrite chondrules: The type I/type II chondrule dichotomy 2015 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier We report trace element concentrations of silicate phases in chondrules from LL3 ordinary chondrites Bishunpur and Semarkona. Results are similar to previously reported data for carbonaceous chondrites, with rare earth element (REE) concentrations increasing in the sequence olivine < pyroxene < mesostasis, and heavy REE (HREE) being enriched by 1-2 orders of magnitude (CI-normalized) relative to light REE (LREE) in ferromagnesian silicates, although no single olivine with very large LREE/HREE fractionation has been found. On average, olivine in type II chondrules is poorer in refractory lithophile incompatible elements (such as REE) than its type I counterpart by a factor of ~2. This suggests that olivine in type I and II chondrules formed by batch and fractional crystallization, respectively, implying that type II chondrules formed under faster cooling rates (> ~ 10 K/h) than type I chondrules. Appreciable Na concentrations (3-221 ppm) are measured in olivine from both chondrule types; type II chondrules seem to have behaved as closed systems, which may require chondrule formation in the vicinity of protoplanets or planetesimals. At any rate, higher solid concentrations in type II chondrule forming regions may explain the higher oxygen fugacities they record compared to type I chondrules. Type I and type II chondrules formed in different environments and the correlation between high solid concentrations and/or oxygen fugacities with rapid cooling rates is a key constraint that chondrule formation models must account for. Earth and Planetary Astrophysics Astrophysics Alard, Olivier oth Gounelle, Matthieu oth Enthalten in Geochimica et cosmochimica acta New York, NY : Elsevier Science, 1951 155(2015), Seite 47-67 (DE-627)129882968 (DE-600)300305-X (DE-576)015179354 0016-7037 nnns volume:155 year:2015 pages:47-67 http://dx.doi.org/10.1016/j.gca.2015.02.005 Volltext http://arxiv.org/abs/1503.03241 GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-GEO SSG-OLC-AST SSG-OPC-GGO SSG-OPC-AST GBV_ILN_21 GBV_ILN_62 GBV_ILN_70 GBV_ILN_154 GBV_ILN_188 GBV_ILN_600 GBV_ILN_2027 GBV_ILN_2279 GBV_ILN_4323 TE 1000 AR 155 2015 47-67
allfields_unstemmed	10.1016/j.gca.2015.02.005 doi PQ20160617 (DE-627)OLC1965665950 (DE-599)GBVOLC1965665950 (PRQ)a1404-73de5e27d30af09314de0ff1a4c10e8ad44703b575707e9d06b7e8e65710cb000 (KEY)0047876820150000155000000047traceelementgeochemistryofordinarychondritechondru DE-627 ger DE-627 rakwb eng 550 DNB TE 1000 AVZ rvk Jacquet, Emmanuel verfasserin aut Trace element geochemistry of ordinary chondrite chondrules: The type I/type II chondrule dichotomy 2015 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier We report trace element concentrations of silicate phases in chondrules from LL3 ordinary chondrites Bishunpur and Semarkona. Results are similar to previously reported data for carbonaceous chondrites, with rare earth element (REE) concentrations increasing in the sequence olivine < pyroxene < mesostasis, and heavy REE (HREE) being enriched by 1-2 orders of magnitude (CI-normalized) relative to light REE (LREE) in ferromagnesian silicates, although no single olivine with very large LREE/HREE fractionation has been found. On average, olivine in type II chondrules is poorer in refractory lithophile incompatible elements (such as REE) than its type I counterpart by a factor of ~2. This suggests that olivine in type I and II chondrules formed by batch and fractional crystallization, respectively, implying that type II chondrules formed under faster cooling rates (> ~ 10 K/h) than type I chondrules. Appreciable Na concentrations (3-221 ppm) are measured in olivine from both chondrule types; type II chondrules seem to have behaved as closed systems, which may require chondrule formation in the vicinity of protoplanets or planetesimals. At any rate, higher solid concentrations in type II chondrule forming regions may explain the higher oxygen fugacities they record compared to type I chondrules. Type I and type II chondrules formed in different environments and the correlation between high solid concentrations and/or oxygen fugacities with rapid cooling rates is a key constraint that chondrule formation models must account for. Earth and Planetary Astrophysics Astrophysics Alard, Olivier oth Gounelle, Matthieu oth Enthalten in Geochimica et cosmochimica acta New York, NY : Elsevier Science, 1951 155(2015), Seite 47-67 (DE-627)129882968 (DE-600)300305-X (DE-576)015179354 0016-7037 nnns volume:155 year:2015 pages:47-67 http://dx.doi.org/10.1016/j.gca.2015.02.005 Volltext http://arxiv.org/abs/1503.03241 GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-GEO SSG-OLC-AST SSG-OPC-GGO SSG-OPC-AST GBV_ILN_21 GBV_ILN_62 GBV_ILN_70 GBV_ILN_154 GBV_ILN_188 GBV_ILN_600 GBV_ILN_2027 GBV_ILN_2279 GBV_ILN_4323 TE 1000 AR 155 2015 47-67
allfieldsGer	10.1016/j.gca.2015.02.005 doi PQ20160617 (DE-627)OLC1965665950 (DE-599)GBVOLC1965665950 (PRQ)a1404-73de5e27d30af09314de0ff1a4c10e8ad44703b575707e9d06b7e8e65710cb000 (KEY)0047876820150000155000000047traceelementgeochemistryofordinarychondritechondru DE-627 ger DE-627 rakwb eng 550 DNB TE 1000 AVZ rvk Jacquet, Emmanuel verfasserin aut Trace element geochemistry of ordinary chondrite chondrules: The type I/type II chondrule dichotomy 2015 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier We report trace element concentrations of silicate phases in chondrules from LL3 ordinary chondrites Bishunpur and Semarkona. Results are similar to previously reported data for carbonaceous chondrites, with rare earth element (REE) concentrations increasing in the sequence olivine < pyroxene < mesostasis, and heavy REE (HREE) being enriched by 1-2 orders of magnitude (CI-normalized) relative to light REE (LREE) in ferromagnesian silicates, although no single olivine with very large LREE/HREE fractionation has been found. On average, olivine in type II chondrules is poorer in refractory lithophile incompatible elements (such as REE) than its type I counterpart by a factor of ~2. This suggests that olivine in type I and II chondrules formed by batch and fractional crystallization, respectively, implying that type II chondrules formed under faster cooling rates (> ~ 10 K/h) than type I chondrules. Appreciable Na concentrations (3-221 ppm) are measured in olivine from both chondrule types; type II chondrules seem to have behaved as closed systems, which may require chondrule formation in the vicinity of protoplanets or planetesimals. At any rate, higher solid concentrations in type II chondrule forming regions may explain the higher oxygen fugacities they record compared to type I chondrules. Type I and type II chondrules formed in different environments and the correlation between high solid concentrations and/or oxygen fugacities with rapid cooling rates is a key constraint that chondrule formation models must account for. Earth and Planetary Astrophysics Astrophysics Alard, Olivier oth Gounelle, Matthieu oth Enthalten in Geochimica et cosmochimica acta New York, NY : Elsevier Science, 1951 155(2015), Seite 47-67 (DE-627)129882968 (DE-600)300305-X (DE-576)015179354 0016-7037 nnns volume:155 year:2015 pages:47-67 http://dx.doi.org/10.1016/j.gca.2015.02.005 Volltext http://arxiv.org/abs/1503.03241 GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-GEO SSG-OLC-AST SSG-OPC-GGO SSG-OPC-AST GBV_ILN_21 GBV_ILN_62 GBV_ILN_70 GBV_ILN_154 GBV_ILN_188 GBV_ILN_600 GBV_ILN_2027 GBV_ILN_2279 GBV_ILN_4323 TE 1000 AR 155 2015 47-67
allfieldsSound	10.1016/j.gca.2015.02.005 doi PQ20160617 (DE-627)OLC1965665950 (DE-599)GBVOLC1965665950 (PRQ)a1404-73de5e27d30af09314de0ff1a4c10e8ad44703b575707e9d06b7e8e65710cb000 (KEY)0047876820150000155000000047traceelementgeochemistryofordinarychondritechondru DE-627 ger DE-627 rakwb eng 550 DNB TE 1000 AVZ rvk Jacquet, Emmanuel verfasserin aut Trace element geochemistry of ordinary chondrite chondrules: The type I/type II chondrule dichotomy 2015 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier We report trace element concentrations of silicate phases in chondrules from LL3 ordinary chondrites Bishunpur and Semarkona. Results are similar to previously reported data for carbonaceous chondrites, with rare earth element (REE) concentrations increasing in the sequence olivine < pyroxene < mesostasis, and heavy REE (HREE) being enriched by 1-2 orders of magnitude (CI-normalized) relative to light REE (LREE) in ferromagnesian silicates, although no single olivine with very large LREE/HREE fractionation has been found. On average, olivine in type II chondrules is poorer in refractory lithophile incompatible elements (such as REE) than its type I counterpart by a factor of ~2. This suggests that olivine in type I and II chondrules formed by batch and fractional crystallization, respectively, implying that type II chondrules formed under faster cooling rates (> ~ 10 K/h) than type I chondrules. Appreciable Na concentrations (3-221 ppm) are measured in olivine from both chondrule types; type II chondrules seem to have behaved as closed systems, which may require chondrule formation in the vicinity of protoplanets or planetesimals. At any rate, higher solid concentrations in type II chondrule forming regions may explain the higher oxygen fugacities they record compared to type I chondrules. Type I and type II chondrules formed in different environments and the correlation between high solid concentrations and/or oxygen fugacities with rapid cooling rates is a key constraint that chondrule formation models must account for. Earth and Planetary Astrophysics Astrophysics Alard, Olivier oth Gounelle, Matthieu oth Enthalten in Geochimica et cosmochimica acta New York, NY : Elsevier Science, 1951 155(2015), Seite 47-67 (DE-627)129882968 (DE-600)300305-X (DE-576)015179354 0016-7037 nnns volume:155 year:2015 pages:47-67 http://dx.doi.org/10.1016/j.gca.2015.02.005 Volltext http://arxiv.org/abs/1503.03241 GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-GEO SSG-OLC-AST SSG-OPC-GGO SSG-OPC-AST GBV_ILN_21 GBV_ILN_62 GBV_ILN_70 GBV_ILN_154 GBV_ILN_188 GBV_ILN_600 GBV_ILN_2027 GBV_ILN_2279 GBV_ILN_4323 TE 1000 AR 155 2015 47-67
language	English
source	Enthalten in Geochimica et cosmochimica acta 155(2015), Seite 47-67 volume:155 year:2015 pages:47-67
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Appreciable Na concentrations (3-221 ppm) are measured in olivine from both chondrule types; type II chondrules seem to have behaved as closed systems, which may require chondrule formation in the vicinity of protoplanets or planetesimals. At any rate, higher solid concentrations in type II chondrule forming regions may explain the higher oxygen fugacities they record compared to type I chondrules. 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author	Jacquet, Emmanuel
spellingShingle	Jacquet, Emmanuel ddc 550 rvk TE 1000 misc Earth and Planetary Astrophysics misc Astrophysics Trace element geochemistry of ordinary chondrite chondrules: The type I/type II chondrule dichotomy
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topic_title	550 DNB TE 1000 AVZ rvk Trace element geochemistry of ordinary chondrite chondrules: The type I/type II chondrule dichotomy Earth and Planetary Astrophysics Astrophysics
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title	Trace element geochemistry of ordinary chondrite chondrules: The type I/type II chondrule dichotomy
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title_full	Trace element geochemistry of ordinary chondrite chondrules: The type I/type II chondrule dichotomy
author_sort	Jacquet, Emmanuel
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title_sort	trace element geochemistry of ordinary chondrite chondrules: the type i/type ii chondrule dichotomy
title_auth	Trace element geochemistry of ordinary chondrite chondrules: The type I/type II chondrule dichotomy
abstract	We report trace element concentrations of silicate phases in chondrules from LL3 ordinary chondrites Bishunpur and Semarkona. Results are similar to previously reported data for carbonaceous chondrites, with rare earth element (REE) concentrations increasing in the sequence olivine < pyroxene < mesostasis, and heavy REE (HREE) being enriched by 1-2 orders of magnitude (CI-normalized) relative to light REE (LREE) in ferromagnesian silicates, although no single olivine with very large LREE/HREE fractionation has been found. On average, olivine in type II chondrules is poorer in refractory lithophile incompatible elements (such as REE) than its type I counterpart by a factor of ~2. This suggests that olivine in type I and II chondrules formed by batch and fractional crystallization, respectively, implying that type II chondrules formed under faster cooling rates (> ~ 10 K/h) than type I chondrules. Appreciable Na concentrations (3-221 ppm) are measured in olivine from both chondrule types; type II chondrules seem to have behaved as closed systems, which may require chondrule formation in the vicinity of protoplanets or planetesimals. At any rate, higher solid concentrations in type II chondrule forming regions may explain the higher oxygen fugacities they record compared to type I chondrules. Type I and type II chondrules formed in different environments and the correlation between high solid concentrations and/or oxygen fugacities with rapid cooling rates is a key constraint that chondrule formation models must account for.
abstractGer	We report trace element concentrations of silicate phases in chondrules from LL3 ordinary chondrites Bishunpur and Semarkona. Results are similar to previously reported data for carbonaceous chondrites, with rare earth element (REE) concentrations increasing in the sequence olivine < pyroxene < mesostasis, and heavy REE (HREE) being enriched by 1-2 orders of magnitude (CI-normalized) relative to light REE (LREE) in ferromagnesian silicates, although no single olivine with very large LREE/HREE fractionation has been found. On average, olivine in type II chondrules is poorer in refractory lithophile incompatible elements (such as REE) than its type I counterpart by a factor of ~2. This suggests that olivine in type I and II chondrules formed by batch and fractional crystallization, respectively, implying that type II chondrules formed under faster cooling rates (> ~ 10 K/h) than type I chondrules. Appreciable Na concentrations (3-221 ppm) are measured in olivine from both chondrule types; type II chondrules seem to have behaved as closed systems, which may require chondrule formation in the vicinity of protoplanets or planetesimals. At any rate, higher solid concentrations in type II chondrule forming regions may explain the higher oxygen fugacities they record compared to type I chondrules. Type I and type II chondrules formed in different environments and the correlation between high solid concentrations and/or oxygen fugacities with rapid cooling rates is a key constraint that chondrule formation models must account for.
abstract_unstemmed	We report trace element concentrations of silicate phases in chondrules from LL3 ordinary chondrites Bishunpur and Semarkona. Results are similar to previously reported data for carbonaceous chondrites, with rare earth element (REE) concentrations increasing in the sequence olivine < pyroxene < mesostasis, and heavy REE (HREE) being enriched by 1-2 orders of magnitude (CI-normalized) relative to light REE (LREE) in ferromagnesian silicates, although no single olivine with very large LREE/HREE fractionation has been found. On average, olivine in type II chondrules is poorer in refractory lithophile incompatible elements (such as REE) than its type I counterpart by a factor of ~2. This suggests that olivine in type I and II chondrules formed by batch and fractional crystallization, respectively, implying that type II chondrules formed under faster cooling rates (> ~ 10 K/h) than type I chondrules. Appreciable Na concentrations (3-221 ppm) are measured in olivine from both chondrule types; type II chondrules seem to have behaved as closed systems, which may require chondrule formation in the vicinity of protoplanets or planetesimals. At any rate, higher solid concentrations in type II chondrule forming regions may explain the higher oxygen fugacities they record compared to type I chondrules. Type I and type II chondrules formed in different environments and the correlation between high solid concentrations and/or oxygen fugacities with rapid cooling rates is a key constraint that chondrule formation models must account for.
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title_short	Trace element geochemistry of ordinary chondrite chondrules: The type I/type II chondrule dichotomy
url	http://dx.doi.org/10.1016/j.gca.2015.02.005 http://arxiv.org/abs/1503.03241
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