Effects of precooling thermal history and cooling rate on the texture of chondrules: A preliminary report
Effect of precooling thermal history of chondrules on the textures of chondrules was examined by crystallizing melts of chondrule compositions with or without relict crystals at cooling rates of about 50℃/min. Textures formed from super-liquidus temperatures (radial or barred olivine texture) were s...
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Geological Institute, Faculty of Science, University of Tokyo
1981
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ftnipr:oai:nipr.repo.nii.ac.jp:00001212 2023-05-15T17:10:58+02:00 Effects of precooling thermal history and cooling rate on the texture of chondrules: A preliminary report Akira Tsuchiyama Hiroko Nagahara 1981-12 https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=1212 http://id.nii.ac.jp/1291/00001212/ https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=1212&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=1212 http://id.nii.ac.jp/1291/00001212/ AA00733561 Memoirs of National Institute of Polar Research. Special issue, 20, 175-192(1981-12) https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=1212&item_no=1&attribute_id=18&file_no=1 Departmental Bulletin Paper P(論文) 1981 ftnipr 2022-11-12T19:42:05Z Effect of precooling thermal history of chondrules on the textures of chondrules was examined by crystallizing melts of chondrule compositions with or without relict crystals at cooling rates of about 50℃/min. Textures formed from super-liquidus temperatures (radial or barred olivine texture) were strikingly different from those formed from sub-liquidus temperatures (porphyritic or microporphyritic texture). Effect of cooling rate was also examined with cooling rates ranging from 500 to 5.3℃/hr. The cooling rate for producing radial or barred pyroxene texture ranges from about 200 to less than 5℃/hr, whereas radial or barred olivine texture was produced with cooling rates greater than about 100℃/hr. 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 |
op_collection_id |
ftnipr |
language |
English |
description |
Effect of precooling thermal history of chondrules on the textures of chondrules was examined by crystallizing melts of chondrule compositions with or without relict crystals at cooling rates of about 50℃/min. Textures formed from super-liquidus temperatures (radial or barred olivine texture) were strikingly different from those formed from sub-liquidus temperatures (porphyritic or microporphyritic texture). Effect of cooling rate was also examined with cooling rates ranging from 500 to 5.3℃/hr. The cooling rate for producing radial or barred pyroxene texture ranges from about 200 to less than 5℃/hr, whereas radial or barred olivine texture was produced with cooling rates greater than about 100℃/hr. |
format |
Report |
author |
Akira Tsuchiyama Hiroko Nagahara |
spellingShingle |
Akira Tsuchiyama Hiroko Nagahara Effects of precooling thermal history and cooling rate on the texture of chondrules: A preliminary report |
author_facet |
Akira Tsuchiyama Hiroko Nagahara |
author_sort |
Akira Tsuchiyama |
title |
Effects of precooling thermal history and cooling rate on the texture of chondrules: A preliminary report |
title_short |
Effects of precooling thermal history and cooling rate on the texture of chondrules: A preliminary report |
title_full |
Effects of precooling thermal history and cooling rate on the texture of chondrules: A preliminary report |
title_fullStr |
Effects of precooling thermal history and cooling rate on the texture of chondrules: A preliminary report |
title_full_unstemmed |
Effects of precooling thermal history and cooling rate on the texture of chondrules: A preliminary report |
title_sort |
effects of precooling thermal history and cooling rate on the texture of chondrules: a preliminary report |
publisher |
Geological Institute, Faculty of Science, University of Tokyo |
publishDate |
1981 |
url |
https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=1212 http://id.nii.ac.jp/1291/00001212/ https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=1212&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=1212 http://id.nii.ac.jp/1291/00001212/ AA00733561 Memoirs of National Institute of Polar Research. Special issue, 20, 175-192(1981-12) https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=1212&item_no=1&attribute_id=18&file_no=1 |
_version_ |
1766067739023114240 |