The chemical compositions and textures of matrices and chondrule rims of eight unequilibrated ordinary chondrites: A preliminary report
The matrices and chondrule rims of eight unequilibrated ordinary chondrites, Semarkona (LL3), Krymka (L3), Sharps (H3), Chainpur (LL3), Tieschitz (H3), Mezo-Madaras (L3), ALH-77214 (L3) and ALH-77216 (L3), have been investigated in detail with the scanning electron microscope. The analyses were made...
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Geological Institute, Faculty of Science, University of Tokyo
1984
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ftnipr:oai:nipr.repo.nii.ac.jp:00001721 2023-05-15T17:10:59+02:00 The chemical compositions and textures of matrices and chondrule rims of eight unequilibrated ordinary chondrites: A preliminary report Satoshi Matsunami 1984-12 https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=1721 http://id.nii.ac.jp/1291/00001721/ https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=1721&item_no=1&attribute_id=18&file_no=1 en eng Geological Institute, Faculty of Science, University of Tokyo https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=1721 http://id.nii.ac.jp/1291/00001721/ AA00733561 Memoirs of National Institute of Polar Research. Special issue, 35, 126-148(1984-12) https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=1721&item_no=1&attribute_id=18&file_no=1 Departmental Bulletin Paper P(論文) 1984 ftnipr 2022-11-12T19:42:34Z The matrices and chondrule rims of eight unequilibrated ordinary chondrites, Semarkona (LL3), Krymka (L3), Sharps (H3), Chainpur (LL3), Tieschitz (H3), Mezo-Madaras (L3), ALH-77214 (L3) and ALH-77216 (L3), have been investigated in detail with the scanning electron microscope. The analyses were made by the SEM-EDS technique, using a Link System Model 860 energy dispersive spectrometer equipped to a JEOL-T200. Although chondrule rims have similarities in texture and composition to matrices, chondrule rims show wider variabilities in chemical composition in comparison with matrices and often have significantly different compositions from the matrices. From compositional relationships between matrix and rim materials and chondrules in Semarkona, it is shown that the most non-refractory, FeO-rich chondrule rims might have been one of the non-refractory components of precursor materials of the Semarkona chondrules, suggesting that chondrules and and matrix and rim materials have one common component in Semarkona. Report Memoirs of National Institute of Polar Research Polar Research National Institute of Polar Research Repository, Japan |
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Open Polar |
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National Institute of Polar Research Repository, Japan |
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ftnipr |
language |
English |
description |
The matrices and chondrule rims of eight unequilibrated ordinary chondrites, Semarkona (LL3), Krymka (L3), Sharps (H3), Chainpur (LL3), Tieschitz (H3), Mezo-Madaras (L3), ALH-77214 (L3) and ALH-77216 (L3), have been investigated in detail with the scanning electron microscope. The analyses were made by the SEM-EDS technique, using a Link System Model 860 energy dispersive spectrometer equipped to a JEOL-T200. Although chondrule rims have similarities in texture and composition to matrices, chondrule rims show wider variabilities in chemical composition in comparison with matrices and often have significantly different compositions from the matrices. From compositional relationships between matrix and rim materials and chondrules in Semarkona, it is shown that the most non-refractory, FeO-rich chondrule rims might have been one of the non-refractory components of precursor materials of the Semarkona chondrules, suggesting that chondrules and and matrix and rim materials have one common component in Semarkona. |
format |
Report |
author |
Satoshi Matsunami |
spellingShingle |
Satoshi Matsunami The chemical compositions and textures of matrices and chondrule rims of eight unequilibrated ordinary chondrites: A preliminary report |
author_facet |
Satoshi Matsunami |
author_sort |
Satoshi Matsunami |
title |
The chemical compositions and textures of matrices and chondrule rims of eight unequilibrated ordinary chondrites: A preliminary report |
title_short |
The chemical compositions and textures of matrices and chondrule rims of eight unequilibrated ordinary chondrites: A preliminary report |
title_full |
The chemical compositions and textures of matrices and chondrule rims of eight unequilibrated ordinary chondrites: A preliminary report |
title_fullStr |
The chemical compositions and textures of matrices and chondrule rims of eight unequilibrated ordinary chondrites: A preliminary report |
title_full_unstemmed |
The chemical compositions and textures of matrices and chondrule rims of eight unequilibrated ordinary chondrites: A preliminary report |
title_sort |
chemical compositions and textures of matrices and chondrule rims of eight unequilibrated ordinary chondrites: a preliminary report |
publisher |
Geological Institute, Faculty of Science, University of Tokyo |
publishDate |
1984 |
url |
https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=1721 http://id.nii.ac.jp/1291/00001721/ https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=1721&item_no=1&attribute_id=18&file_no=1 |
genre |
Memoirs of National Institute of Polar Research Polar Research |
genre_facet |
Memoirs of National Institute of Polar Research Polar Research |
op_relation |
https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=1721 http://id.nii.ac.jp/1291/00001721/ AA00733561 Memoirs of National Institute of Polar Research. Special issue, 35, 126-148(1984-12) https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=1721&item_no=1&attribute_id=18&file_no=1 |
_version_ |
1766067769290260480 |