| 对南极类C1陨石成因和星云水化作用范围的几点看法 |
| |
| 引用本文： | 侯渭,欧阳自远.对南极类C1陨石成因和星云水化作用范围的几点看法[J].地球科学进展,1995,10(4):373-377. |
| |
| 作者姓名： | 侯渭 欧阳自远 |
| |
| 摘 要： | 南极陨石的研究发现，有几个碳质球粒陨石富含与ＣＩ陨石类似的含水层状硅酸盐集合体及其角砾，其氧同位素比值也与ＣＩ接近，因而称之为类Ｃ１陨石。类Ｃ１陨石与Ｃ１陨石的区别是：类Ｃ１陨石中的含水层状硅酸盐既以基质的形式产出，也出现在球粒中；类Ｃ１陨石中含有球粒及有关组分，如球粒碎块、矿物集合体等。每个陨石中所含这些组分的数量不同，其矿物的成分也差别很大，从而说明它们形成的星云环境不同。因此笔者认为类Ｃ１陨
|
| 关 键 词： | 南极 陨石 碳质球粒陨石 成因 星云 水化作用 |
A DISCUSSION ON SOME ANTARCTIC QUASI-C1 CHONDRITES ORIGIN AND RANGE OF NEBULAR HYDROUS EFFECT |
| |
| Hou Wei,Ouyang Ziyuan.A DISCUSSION ON SOME ANTARCTIC QUASI-C1 CHONDRITES ORIGIN AND RANGE OF NEBULAR HYDROUS EFFECT[J].Advance in Earth Sciences,1995,10(4):373-377. |
| |
| Authors: | Hou Wei Ouyang Ziyuan |
| |
| Institution: | Institute of Geochemisry, Chinese Academy of Sciences, Guiyang 550002 |
| |
| Abstract: | Because of containing many phyllosilicate aggregates and similar oxygen isotopic composition to C1 carbonaceous chondrite, the Antarctic carbonaceous chondrite, Y-82162, Y-86720, Belgica-7904，PCA-91082, Y-793495 and Y-8449 are called as quasi-C1 chondrite. In these carbonaceous chondrites the phyllosilicate aggregates exist as four forms: (1)matrix, (2)clast with same composition of matrix, (3)chondrule, (4)dark inclusion. This four forms are independence relatively in meteorite, so the hydrous effect must take place after nebular condensation and before meteorite parent body formation. Besides phyllosilicate aggregates, some higher temperature condensates or their remainder, for example, non-completely hydrous chondrite, anhydrous silicate mineral and their aggregate, appear in these meteorites. In different meteorite the composations of higher temperature condensate remainder are various, from enstatite, silica mineral, to moderate Fe-rich o-livine, Fe-rich olivine. According to above evidences and this fact that water has been observed on Mar, Earth and Mercury, we consider that range of nebular hydrous effect could be wide, including terrestrial planet region and asteroids region of solar nebular. |
| |
| Keywords: | Antarctic meteorite Carbonaceous chondrite Nebular condensation |
| 本文献已被 维普 等数据库收录！ |
| 点击此处可从《地球科学进展》浏览原始摘要信息 |
| 点击此处可从《地球科学进展》下载免费的PDF全文 |
|
