Origin and Evolution of Condrules Based on Na/Al-Dispersion and -Convergence in Yamato-74 Ordinary Chondrites
P(論文) Na/Al convergence has been observed in groundmass of chondrules and matrix from seven Yamato-74 (H, L, 4-5) chondrites. On the other hand, Na/Al dispersion has prevailed in groundmass of chondrules and matrix from Yamato-74191 (L3) chondrite. The results suggest that : (1) Primordial liquid dr...
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ftnipr:oai:nipr.repo.nii.ac.jp:00001055 2024-09-09T19:51:59+00:00 Origin and Evolution of Condrules Based on Na/Al-Dispersion and -Convergence in Yamato-74 Ordinary Chondrites Onuma, Naoki Nishida, Norimasa Ohtsuka, Yoshiro Kimura, Makoto Yanai, Keizo 1979-12 application/pdf https://nipr.repo.nii.ac.jp/record/1055/files/KJ00000011599.pdf eng eng Memoirs of National Institute of Polar Research. Special issue 15 206 214 AA00733561 https://nipr.repo.nii.ac.jp/record/1055/files/KJ00000011599.pdf 1979 ftnipr 2024-06-17T04:00:22Z P(論文) Na/Al convergence has been observed in groundmass of chondrules and matrix from seven Yamato-74 (H, L, 4-5) chondrites. On the other hand, Na/Al dispersion has prevailed in groundmass of chondrules and matrix from Yamato-74191 (L3) chondrite. The results suggest that : (1) Primordial liquid droplets as precursors of the chondrules might be derived from a rapidly cooling solar nebula by fractional condensation. (2) The hot liquid droplets thus formed might be cooled instantaneously by radiation loss in the cooling nebula. (3) The chondrules as quenched products might be subjected to mutual collision during accumulation in the cold nebula. (4) Planetesimals accumulated by the chondrules might be transferred from the place of birth to an unknown hot region in the proto solar nebula. departmental bulletin paper Other/Unknown Material Memoirs of National Institute of Polar Research Polar Research National Institute of Polar Research Repository, Japan Yamato ENVELOPE(35.583,35.583,-71.417,-71.417) |
institution |
Open Polar |
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National Institute of Polar Research Repository, Japan |
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ftnipr |
language |
English |
description |
P(論文) Na/Al convergence has been observed in groundmass of chondrules and matrix from seven Yamato-74 (H, L, 4-5) chondrites. On the other hand, Na/Al dispersion has prevailed in groundmass of chondrules and matrix from Yamato-74191 (L3) chondrite. The results suggest that : (1) Primordial liquid droplets as precursors of the chondrules might be derived from a rapidly cooling solar nebula by fractional condensation. (2) The hot liquid droplets thus formed might be cooled instantaneously by radiation loss in the cooling nebula. (3) The chondrules as quenched products might be subjected to mutual collision during accumulation in the cold nebula. (4) Planetesimals accumulated by the chondrules might be transferred from the place of birth to an unknown hot region in the proto solar nebula. departmental bulletin paper |
author |
Onuma, Naoki Nishida, Norimasa Ohtsuka, Yoshiro Kimura, Makoto Yanai, Keizo |
spellingShingle |
Onuma, Naoki Nishida, Norimasa Ohtsuka, Yoshiro Kimura, Makoto Yanai, Keizo Origin and Evolution of Condrules Based on Na/Al-Dispersion and -Convergence in Yamato-74 Ordinary Chondrites |
author_facet |
Onuma, Naoki Nishida, Norimasa Ohtsuka, Yoshiro Kimura, Makoto Yanai, Keizo |
author_sort |
Onuma, Naoki |
title |
Origin and Evolution of Condrules Based on Na/Al-Dispersion and -Convergence in Yamato-74 Ordinary Chondrites |
title_short |
Origin and Evolution of Condrules Based on Na/Al-Dispersion and -Convergence in Yamato-74 Ordinary Chondrites |
title_full |
Origin and Evolution of Condrules Based on Na/Al-Dispersion and -Convergence in Yamato-74 Ordinary Chondrites |
title_fullStr |
Origin and Evolution of Condrules Based on Na/Al-Dispersion and -Convergence in Yamato-74 Ordinary Chondrites |
title_full_unstemmed |
Origin and Evolution of Condrules Based on Na/Al-Dispersion and -Convergence in Yamato-74 Ordinary Chondrites |
title_sort |
origin and evolution of condrules based on na/al-dispersion and -convergence in yamato-74 ordinary chondrites |
publishDate |
1979 |
url |
https://nipr.repo.nii.ac.jp/record/1055/files/KJ00000011599.pdf |
long_lat |
ENVELOPE(35.583,35.583,-71.417,-71.417) |
geographic |
Yamato |
geographic_facet |
Yamato |
genre |
Memoirs of National Institute of Polar Research Polar Research |
genre_facet |
Memoirs of National Institute of Polar Research Polar Research |
op_relation |
Memoirs of National Institute of Polar Research. Special issue 15 206 214 AA00733561 https://nipr.repo.nii.ac.jp/record/1055/files/KJ00000011599.pdf |
_version_ |
1809921331900186624 |