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Platinum Group Elements in Howardites and Polymict Eucrites: Implications for Impactors on the HED Parent Body

Most of the HED meteorites are breccias. These HED breccias consist of different proportions of eucrites, diogenites, and other minor components. Crystalline eucrites and diogenites generally have very low PGE (platinum group element) abundances due to metal-silicate fractionation. PGEs are strongly...

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Main Authors: Wee, Boon Siong, Yamaguchi, Yuji, Ebihara, Mitsuru
Format: Proceeding
Language:English
Published: 2010
Subjects:
Q Science (General)
QD Chemistry
Online Access:http://ir.unimas.my/id/eprint/31365/1/PLATINUM%20GROUP.pdf
http://ir.unimas.my/id/eprint/31365/
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spelling my.unimas.ir.313652022-01-04T08:49:32Z http://ir.unimas.my/id/eprint/31365/ Platinum Group Elements in Howardites and Polymict Eucrites: Implications for Impactors on the HED Parent Body Wee, Boon Siong Yamaguchi, Yuji Ebihara, Mitsuru Q Science (General) QD Chemistry Most of the HED meteorites are breccias. These HED breccias consist of different proportions of eucrites, diogenites, and other minor components. Crystalline eucrites and diogenites generally have very low PGE (platinum group element) abundances due to metal-silicate fractionation. PGEs are strongly partitioned into FeNi metals (core). However, many HED breccias have relatively high abundances of PGEs. The presence of chondritic materials was inferred from siderophile elemental data [1] and carbonaceous chondrite clasts were found in howardites and polymict eucrites [2, 3]. Because of the low PGE abundances in crystalline rocks, PGEs can be used as signature elements to identify impactors [1,4]. By using PGE data of these polymict breccias, we aim to discuss the origin of impactor materials that caused wide spread brecciation on the parent body in the early solar system. 2010 Proceeding PeerReviewed text en http://ir.unimas.my/id/eprint/31365/1/PLATINUM%20GROUP.pdf Wee, Boon Siong and Yamaguchi, Yuji and Ebihara, Mitsuru (2010) Platinum Group Elements in Howardites and Polymict Eucrites: Implications for Impactors on the HED Parent Body. In: 41st Lunar and Planetary Science Conference, 1- 5 March 2010, Houston, Texas.
institution Universiti Malaysia Sarawak
building Centre for Academic Information Services (CAIS)
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaysia Sarawak
content_source UNIMAS Institutional Repository
url_provider http://ir.unimas.my/
language English
topic Q Science (General)
QD Chemistry
spellingShingle Q Science (General)
QD Chemistry
Wee, Boon Siong
Yamaguchi, Yuji
Ebihara, Mitsuru
Platinum Group Elements in Howardites and Polymict Eucrites: Implications for Impactors on the HED Parent Body
description Most of the HED meteorites are breccias. These HED breccias consist of different proportions of eucrites, diogenites, and other minor components. Crystalline eucrites and diogenites generally have very low PGE (platinum group element) abundances due to metal-silicate fractionation. PGEs are strongly partitioned into FeNi metals (core). However, many HED breccias have relatively high abundances of PGEs. The presence of chondritic materials was inferred from siderophile elemental data [1] and carbonaceous chondrite clasts were found in howardites and polymict eucrites [2, 3]. Because of the low PGE abundances in crystalline rocks, PGEs can be used as signature elements to identify impactors [1,4]. By using PGE data of these polymict breccias, we aim to discuss the origin of impactor materials that caused wide spread brecciation on the parent body in the early solar system.
format Proceeding
author Wee, Boon Siong
Yamaguchi, Yuji
Ebihara, Mitsuru
author_facet Wee, Boon Siong
Yamaguchi, Yuji
Ebihara, Mitsuru
author_sort Wee, Boon Siong
title Platinum Group Elements in Howardites and Polymict Eucrites: Implications for Impactors on the HED Parent Body
title_short Platinum Group Elements in Howardites and Polymict Eucrites: Implications for Impactors on the HED Parent Body
title_full Platinum Group Elements in Howardites and Polymict Eucrites: Implications for Impactors on the HED Parent Body
title_fullStr Platinum Group Elements in Howardites and Polymict Eucrites: Implications for Impactors on the HED Parent Body
title_full_unstemmed Platinum Group Elements in Howardites and Polymict Eucrites: Implications for Impactors on the HED Parent Body
title_sort platinum group elements in howardites and polymict eucrites: implications for impactors on the hed parent body
publishDate 2010
url http://ir.unimas.my/id/eprint/31365/1/PLATINUM%20GROUP.pdf
http://ir.unimas.my/id/eprint/31365/
_version_ 1724078526148116480
score 13.211869

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