Thermoluminescence survey of 12 meteorites collected by the European 1988 Antarctic meteorite expedition to Allan Hills and the importance of acid washing for thermoluminescence sensitivity measurements
Natural and induced thermoluminescence (TL) data are reported for 12 meteorites recovered from the Allan Hills region of Antarctica by the European field party during the 1988/1989 field season. The samples include one with extremely high natural TL, ALH88035, suggestive of exposure to unusually hig...
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1991
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ftnasantrs:oai:casi.ntrs.nasa.gov:19910058647 2023-05-15T13:53:23+02:00 Thermoluminescence survey of 12 meteorites collected by the European 1988 Antarctic meteorite expedition to Allan Hills and the importance of acid washing for thermoluminescence sensitivity measurements Benoit, P. H. Sears, H. Sears, D. W. G. Unclassified, Unlimited, Publicly available Jun 1, 1991 http://ntrs.nasa.gov/search.jsp?R=19910058647 unknown http://ntrs.nasa.gov/search.jsp?R=19910058647 Accession ID: 91A43270 Copyright Other Sources 91 Meteoritics; 26; 157-160 1991 ftnasantrs 2012-02-15T19:03:47Z Natural and induced thermoluminescence (TL) data are reported for 12 meteorites recovered from the Allan Hills region of Antarctica by the European field party during the 1988/1989 field season. The samples include one with extremely high natural TL, ALH88035, suggestive of exposure to unusually high radiation doses (i.e., low degrees of shielding), and one, ALH88034, whose low natural TL suggests reheating within the last 100,000 years. The remainder have natural TL values suggestive of terrestrial ages similar to those of other meteorites from Allan Hills. ALH88015 (L6) has induced TL data suggestive of intense shock. TL sensitivities of these meteorites are generally lower than observed falls of their petrologic types, as is also observed for Antarctic meteorites in general. Acid-washing experiments indicate that this is solely the result of terrestrial weathering rather than a nonterrestrial Antarctic-non-Antarctic difference. However, other TL parameters, such as natural TL and induced peak temperature-width, are unchanged by acid washing and are sensitive indicators of a meteorite's metamorphic and recent radiation history. Other/Unknown Material Antarc* Antarctic Antarctica NASA Technical Reports Server (NTRS) Allan Hills ENVELOPE(159.667,159.667,-76.717,-76.717) Antarctic |
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NASA Technical Reports Server (NTRS) |
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91 |
spellingShingle |
91 Benoit, P. H. Sears, H. Sears, D. W. G. Thermoluminescence survey of 12 meteorites collected by the European 1988 Antarctic meteorite expedition to Allan Hills and the importance of acid washing for thermoluminescence sensitivity measurements |
topic_facet |
91 |
description |
Natural and induced thermoluminescence (TL) data are reported for 12 meteorites recovered from the Allan Hills region of Antarctica by the European field party during the 1988/1989 field season. The samples include one with extremely high natural TL, ALH88035, suggestive of exposure to unusually high radiation doses (i.e., low degrees of shielding), and one, ALH88034, whose low natural TL suggests reheating within the last 100,000 years. The remainder have natural TL values suggestive of terrestrial ages similar to those of other meteorites from Allan Hills. ALH88015 (L6) has induced TL data suggestive of intense shock. TL sensitivities of these meteorites are generally lower than observed falls of their petrologic types, as is also observed for Antarctic meteorites in general. Acid-washing experiments indicate that this is solely the result of terrestrial weathering rather than a nonterrestrial Antarctic-non-Antarctic difference. However, other TL parameters, such as natural TL and induced peak temperature-width, are unchanged by acid washing and are sensitive indicators of a meteorite's metamorphic and recent radiation history. |
format |
Other/Unknown Material |
author |
Benoit, P. H. Sears, H. Sears, D. W. G. |
author_facet |
Benoit, P. H. Sears, H. Sears, D. W. G. |
author_sort |
Benoit, P. H. |
title |
Thermoluminescence survey of 12 meteorites collected by the European 1988 Antarctic meteorite expedition to Allan Hills and the importance of acid washing for thermoluminescence sensitivity measurements |
title_short |
Thermoluminescence survey of 12 meteorites collected by the European 1988 Antarctic meteorite expedition to Allan Hills and the importance of acid washing for thermoluminescence sensitivity measurements |
title_full |
Thermoluminescence survey of 12 meteorites collected by the European 1988 Antarctic meteorite expedition to Allan Hills and the importance of acid washing for thermoluminescence sensitivity measurements |
title_fullStr |
Thermoluminescence survey of 12 meteorites collected by the European 1988 Antarctic meteorite expedition to Allan Hills and the importance of acid washing for thermoluminescence sensitivity measurements |
title_full_unstemmed |
Thermoluminescence survey of 12 meteorites collected by the European 1988 Antarctic meteorite expedition to Allan Hills and the importance of acid washing for thermoluminescence sensitivity measurements |
title_sort |
thermoluminescence survey of 12 meteorites collected by the european 1988 antarctic meteorite expedition to allan hills and the importance of acid washing for thermoluminescence sensitivity measurements |
publishDate |
1991 |
url |
http://ntrs.nasa.gov/search.jsp?R=19910058647 |
op_coverage |
Unclassified, Unlimited, Publicly available |
long_lat |
ENVELOPE(159.667,159.667,-76.717,-76.717) |
geographic |
Allan Hills Antarctic |
geographic_facet |
Allan Hills Antarctic |
genre |
Antarc* Antarctic Antarctica |
genre_facet |
Antarc* Antarctic Antarctica |
op_source |
Other Sources |
op_relation |
http://ntrs.nasa.gov/search.jsp?R=19910058647 Accession ID: 91A43270 |
op_rights |
Copyright |
_version_ |
1766258435236560896 |