| Item type |
紀要論文(ELS) / Departmental Bulletin Paper(1) |
| 公開日 |
1981-12-01 |
| タイトル |
|
|
タイトル |
Did diogenites form from diogenites?: A case of Yamato diogenites |
|
言語 |
en |
| 言語 |
|
|
言語 |
eng |
| 資源タイプ |
|
|
資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
|
資源タイプ |
departmental bulletin paper |
| ページ属性 |
|
|
内容記述タイプ |
Other |
|
内容記述 |
P(論文) |
| 著者名(英) |
Masuda, Akimasa
Nakamura, Noboru
Shimizu, Hiroshi
Tanaka, Tsuyoshi
|
| 著者所属(英) |
|
|
言語 |
en |
|
値 |
Department of Earth Sciences, Faculty of Science, Kobe University/Department of Earth Sciences, Faculty of Science, Kobe University/Department of Earth Sciences, Faculty of Science, Kobe University/Geological Survey of Japan |
| 抄録(英) |
|
|
内容記述タイプ |
Other |
|
内容記述 |
It has been found that the REE distribution in Y-74010 is considerably different between two adjacent fragments, sizes of which are at least 500mg, a fact indicative of patchy heterogeneity. In addition, it is worthwhile to note that the abundance ratios between two fragments in question are a linear function of atomic number. On the other hand, Y-74013 can be interpreted as a mixture of two distinct constituents, i.e., relatively coarse-grained pyroxene and much finer pyroxenic remnant component. It is noted that these two constituents of Y-74013 can correspond to two different kinds of parts represented by macroscopically separated patches of Y-74010 mentioned above. These observations coupled with the basically linear abundance ratios relative to atomic number suggest that (1) intense melting took place for a parental body of the Yamato diogenites, (2) two separate components reflect the coexisting solid and liquid phases and (3) the solid phase was formed from liquid, transiently as a low-Ca clinopyroxene, which subsequently changed into orthopyroxene as a finally stable form. Also it is an interesting fact that the apparent REE partition function pertaining to Y-692 appears to show discrete (quantum-like) effect. |
| 雑誌書誌ID |
|
|
収録物識別子タイプ |
NCID |
|
収録物識別子 |
AA00733561 |
| 書誌情報 |
Memoirs of National Institute of Polar Research. Special issue
巻 20,
p. 100-105,
発行日 1981-12
|
KJ00000011732 (778.8 kB)
.png)
