The Antarctic environment and its effect upon the total carbon and sulfur abundances in recovered meteorites
Total carbon and sulfur abundances have been measured for 25 meteorites recovered from the Allan Hills area of Antarctica. The majority (greater than 67%) of the meteorites analyzed do not contain enriched carbon abundances resulting from weathering processes. The presence of secondary carbonates in...
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ftnasantrs:oai:casi.ntrs.nasa.gov:19820038785 2023-05-15T13:46:48+02:00 The Antarctic environment and its effect upon the total carbon and sulfur abundances in recovered meteorites Gibson, E. K., Jr. Andrawes, F. F. Unclassified, Unlimited, Publicly available JAN 1, 1980 http://ntrs.nasa.gov/search.jsp?R=19820038785 unknown http://ntrs.nasa.gov/search.jsp?R=19820038785 Accession ID: 82A22320 Copyright Other Sources 91 Lunar and Planetary Science Conference; March 17-21, 1980; Houston, TX 1980 ftnasantrs 2012-02-15T15:02:07Z Total carbon and sulfur abundances have been measured for 25 meteorites recovered from the Allan Hills area of Antarctica. The majority (greater than 67%) of the meteorites analyzed do not contain enriched carbon abundances resulting from weathering processes. The presence of secondary carbonates in samples which give no apparent evidence of weathering was noted during pyrolysis experiments, despite the 'normal' total carbon abundances. In selected cases, the surfaces of weathered samples may contain up to a factor of two greater carbon content than the interior. Variations in carbon abundances may reflect the degree of weathering and the amount of secondary minerals present. One of the surprises of this study is that the majority of the Antarctic meteorites studied do not exhibit total carbon and sulfur abundances outside the ranges previously observed for falls. Other/Unknown Material Antarc* Antarctic Antarctica NASA Technical Reports Server (NTRS) Antarctic The Antarctic Allan Hills ENVELOPE(159.667,159.667,-76.717,-76.717) |
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NASA Technical Reports Server (NTRS) |
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91 Gibson, E. K., Jr. Andrawes, F. F. The Antarctic environment and its effect upon the total carbon and sulfur abundances in recovered meteorites |
topic_facet |
91 |
description |
Total carbon and sulfur abundances have been measured for 25 meteorites recovered from the Allan Hills area of Antarctica. The majority (greater than 67%) of the meteorites analyzed do not contain enriched carbon abundances resulting from weathering processes. The presence of secondary carbonates in samples which give no apparent evidence of weathering was noted during pyrolysis experiments, despite the 'normal' total carbon abundances. In selected cases, the surfaces of weathered samples may contain up to a factor of two greater carbon content than the interior. Variations in carbon abundances may reflect the degree of weathering and the amount of secondary minerals present. One of the surprises of this study is that the majority of the Antarctic meteorites studied do not exhibit total carbon and sulfur abundances outside the ranges previously observed for falls. |
format |
Other/Unknown Material |
author |
Gibson, E. K., Jr. Andrawes, F. F. |
author_facet |
Gibson, E. K., Jr. Andrawes, F. F. |
author_sort |
Gibson, E. K., Jr. |
title |
The Antarctic environment and its effect upon the total carbon and sulfur abundances in recovered meteorites |
title_short |
The Antarctic environment and its effect upon the total carbon and sulfur abundances in recovered meteorites |
title_full |
The Antarctic environment and its effect upon the total carbon and sulfur abundances in recovered meteorites |
title_fullStr |
The Antarctic environment and its effect upon the total carbon and sulfur abundances in recovered meteorites |
title_full_unstemmed |
The Antarctic environment and its effect upon the total carbon and sulfur abundances in recovered meteorites |
title_sort |
antarctic environment and its effect upon the total carbon and sulfur abundances in recovered meteorites |
publishDate |
1980 |
url |
http://ntrs.nasa.gov/search.jsp?R=19820038785 |
op_coverage |
Unclassified, Unlimited, Publicly available |
long_lat |
ENVELOPE(159.667,159.667,-76.717,-76.717) |
geographic |
Antarctic The Antarctic Allan Hills |
geographic_facet |
Antarctic The Antarctic Allan Hills |
genre |
Antarc* Antarctic Antarctica |
genre_facet |
Antarc* Antarctic Antarctica |
op_source |
Other Sources |
op_relation |
http://ntrs.nasa.gov/search.jsp?R=19820038785 Accession ID: 82A22320 |
op_rights |
Copyright |
_version_ |
1766245230649016320 |