On the origin of enstatite chondrite chondrules based on their petrography and comparison with experimentally produced chondrules
The recent discovery of several types 3 and 4 enstatite chondrites (EC) in the Antarctic collection increases greatly the ability to compare unaltered, naturally-formed EC chondrules with chondrules produced experimentally from melts of enstatitic chondrule composition. Because these discoveries are...
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ftnasantrs:oai:casi.ntrs.nasa.gov:19940031651 2023-05-15T13:42:51+02:00 On the origin of enstatite chondrite chondrules based on their petrography and comparison with experimentally produced chondrules Dehart, John M. Lofgren, Gary E. Burkett, P. J. Unclassified, Unlimited, Publicly available JAN 1, 1994 application/pdf http://hdl.handle.net/2060/19940031651 unknown Document ID: 19940031651 Accession ID: 94N36158 http://hdl.handle.net/2060/19940031651 No Copyright CASI ASTROPHYSICS Lunar and Planetary Inst., The Twenty-Fifth Lunar and Planetary Science Conference. Part 2: H-O; p 801-802 1994 ftnasantrs 2015-03-15T03:42:58Z The recent discovery of several types 3 and 4 enstatite chondrites (EC) in the Antarctic collection increases greatly the ability to compare unaltered, naturally-formed EC chondrules with chondrules produced experimentally from melts of enstatitic chondrule composition. Because these discoveries are so recent we have undertaken the task of characterizing these chondrules for purposes of comparison. We have looked at several new Antarctic E3 chondrites and Qingzhen. They all have numerous chondrules with well defined outlines and readily identifiable textures. All have mostly porphyritic chondrules, but there are differences in the size and kinds of textures. Radial pyroxene, barred/dendritic px, and cryptocrystalline chondrules are present in differing amounts with one exception. Other/Unknown Material Antarc* Antarctic NASA Technical Reports Server (NTRS) Antarctic The Antarctic |
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Open Polar |
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NASA Technical Reports Server (NTRS) |
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ftnasantrs |
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unknown |
topic |
ASTROPHYSICS |
spellingShingle |
ASTROPHYSICS Dehart, John M. Lofgren, Gary E. Burkett, P. J. On the origin of enstatite chondrite chondrules based on their petrography and comparison with experimentally produced chondrules |
topic_facet |
ASTROPHYSICS |
description |
The recent discovery of several types 3 and 4 enstatite chondrites (EC) in the Antarctic collection increases greatly the ability to compare unaltered, naturally-formed EC chondrules with chondrules produced experimentally from melts of enstatitic chondrule composition. Because these discoveries are so recent we have undertaken the task of characterizing these chondrules for purposes of comparison. We have looked at several new Antarctic E3 chondrites and Qingzhen. They all have numerous chondrules with well defined outlines and readily identifiable textures. All have mostly porphyritic chondrules, but there are differences in the size and kinds of textures. Radial pyroxene, barred/dendritic px, and cryptocrystalline chondrules are present in differing amounts with one exception. |
format |
Other/Unknown Material |
author |
Dehart, John M. Lofgren, Gary E. Burkett, P. J. |
author_facet |
Dehart, John M. Lofgren, Gary E. Burkett, P. J. |
author_sort |
Dehart, John M. |
title |
On the origin of enstatite chondrite chondrules based on their petrography and comparison with experimentally produced chondrules |
title_short |
On the origin of enstatite chondrite chondrules based on their petrography and comparison with experimentally produced chondrules |
title_full |
On the origin of enstatite chondrite chondrules based on their petrography and comparison with experimentally produced chondrules |
title_fullStr |
On the origin of enstatite chondrite chondrules based on their petrography and comparison with experimentally produced chondrules |
title_full_unstemmed |
On the origin of enstatite chondrite chondrules based on their petrography and comparison with experimentally produced chondrules |
title_sort |
on the origin of enstatite chondrite chondrules based on their petrography and comparison with experimentally produced chondrules |
publishDate |
1994 |
url |
http://hdl.handle.net/2060/19940031651 |
op_coverage |
Unclassified, Unlimited, Publicly available |
geographic |
Antarctic The Antarctic |
geographic_facet |
Antarctic The Antarctic |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_source |
CASI |
op_relation |
Document ID: 19940031651 Accession ID: 94N36158 http://hdl.handle.net/2060/19940031651 |
op_rights |
No Copyright |
_version_ |
1766173635920265216 |