Exposure and terrestrial ages of four Allan Hills Antarctic meteorites
Terrestrial ages of meteorites are based on the amount of cosmic-ray-produced radioactivity in the sample and the number of observed falls that have similar cosmic-ray exposure histories. The cosmic-ray exposures are obtained from the stable noble gas isotopes. Noble gas isotopes are measured by hig...
| Main Authors: | , , |
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| Language: | unknown |
| Published: |
1978
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| Subjects: | |
| Online Access: | http://ntrs.nasa.gov/search.jsp?R=19790042425 |
| _version_ | 1821753045817491456 |
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| author | Kirsten, T. Ries, D. Fireman, E. L. |
| author_facet | Kirsten, T. Ries, D. Fireman, E. L. |
| author_sort | Kirsten, T. |
| collection | NASA Technical Reports Server (NTRS) |
| description | Terrestrial ages of meteorites are based on the amount of cosmic-ray-produced radioactivity in the sample and the number of observed falls that have similar cosmic-ray exposure histories. The cosmic-ray exposures are obtained from the stable noble gas isotopes. Noble gas isotopes are measured by high-sensitivity mass spectrometry. In the present study, the noble gas contents were measured in four Allan Hill meteorites (No. 5, No. 6, No. 7, and No. 8), whose C-14, Al-26, and Mn-53 radioactivities are known. These meteorites are of particular interest because they belong to a large assemblage of distinct meteorites that lie exposed on a small (110 sq km) area of ice near the Allan Hills. |
| genre | Antarc* Antarctic |
| genre_facet | Antarc* Antarctic |
| geographic | Allan Hill Allan Hills Antarctic |
| geographic_facet | Allan Hill Allan Hills Antarctic |
| id | ftnasantrs:oai:casi.ntrs.nasa.gov:19790042425 |
| institution | Open Polar |
| language | unknown |
| long_lat | ENVELOPE(-95.147,-95.147,56.859,56.859) ENVELOPE(159.667,159.667,-76.717,-76.717) |
| op_collection_id | ftnasantrs |
| op_coverage | Unclassified, Unlimited, Publicly available |
| op_relation | http://ntrs.nasa.gov/search.jsp?R=19790042425 Accession ID: 79A26438 |
| op_rights | Copyright |
| op_source | Other Sources |
| publishDate | 1978 |
| record_format | openpolar |
| spelling | ftnasantrs:oai:casi.ntrs.nasa.gov:19790042425 2025-01-16T19:22:56+00:00 Exposure and terrestrial ages of four Allan Hills Antarctic meteorites Kirsten, T. Ries, D. Fireman, E. L. Unclassified, Unlimited, Publicly available Dec 31, 1978 http://ntrs.nasa.gov/search.jsp?R=19790042425 unknown http://ntrs.nasa.gov/search.jsp?R=19790042425 Accession ID: 79A26438 Copyright Other Sources 91 1978 ftnasantrs 2012-02-15T13:51:40Z Terrestrial ages of meteorites are based on the amount of cosmic-ray-produced radioactivity in the sample and the number of observed falls that have similar cosmic-ray exposure histories. The cosmic-ray exposures are obtained from the stable noble gas isotopes. Noble gas isotopes are measured by high-sensitivity mass spectrometry. In the present study, the noble gas contents were measured in four Allan Hill meteorites (No. 5, No. 6, No. 7, and No. 8), whose C-14, Al-26, and Mn-53 radioactivities are known. These meteorites are of particular interest because they belong to a large assemblage of distinct meteorites that lie exposed on a small (110 sq km) area of ice near the Allan Hills. Other/Unknown Material Antarc* Antarctic NASA Technical Reports Server (NTRS) Allan Hill ENVELOPE(-95.147,-95.147,56.859,56.859) Allan Hills ENVELOPE(159.667,159.667,-76.717,-76.717) Antarctic |
| spellingShingle | 91 Kirsten, T. Ries, D. Fireman, E. L. Exposure and terrestrial ages of four Allan Hills Antarctic meteorites |
| title | Exposure and terrestrial ages of four Allan Hills Antarctic meteorites |
| title_full | Exposure and terrestrial ages of four Allan Hills Antarctic meteorites |
| title_fullStr | Exposure and terrestrial ages of four Allan Hills Antarctic meteorites |
| title_full_unstemmed | Exposure and terrestrial ages of four Allan Hills Antarctic meteorites |
| title_short | Exposure and terrestrial ages of four Allan Hills Antarctic meteorites |
| title_sort | exposure and terrestrial ages of four allan hills antarctic meteorites |
| topic | 91 |
| topic_facet | 91 |
| url | http://ntrs.nasa.gov/search.jsp?R=19790042425 |