Petrology and mineralogy of martian meteorite GRV 99027
文献类型：期刊论文
| 作者 | Wang, HN; Liang, Y; Xu, WB
|
| 刊名 | ACTA PETROLOGICA SINICA
 |
| 出版日期 | 2006-02-01 |
| 卷号 | 22期号:2页码:491-502 |
| 关键词 | martian meteorite GRV 99027 lherzolitic shergottite crystallization sequence equilibrium temperature shock pressure |
| ISSN号 | 1000-0569 |
| 英文摘要 | GRV 99027 is a new member of the martian lherzolitic shergottites(L-S) consisting of poikilitic, non-poikilitic and melt pocket textures. Its mineral modal composition is olivin (55vol%), pyroxene (37.5vol%, pigeonite and augite), a few maskelynite (6vol%), chromite (1.5vol%), and trace whitlockite, troilite and so on. The mineralogical chemistry of GRV 99027 are relatively homogeneous: olivine(Fo(69.1-76.6)Fa(23.4-30.9) avg. Fo(72.4) Fa(27.6)), pigeonite (En(59.3-75.1)Fs(20.5-26.9)Wo(3.1-14.9), avg. En(68.6) Fs(23.5), Wo(8.0) augite(En(46.6-53)Fs(13.1-16.1)Wo(31.9-37.8), avg. En(50.7)Fs(14.5)Wo(34.8)) and maskelynite (An(43.6-59.3)Ab(40.2-54.6)Or(0.5-1.8), avg. An(52.4)Ab(46.7) Or(0.8)). The crystallization sequence of GRV 99027 was two stages: firstly the primitive parent magma which originated from depleted martian mantle source region crystallized olivine and chromite in poikilitic area. Subsequently, a great deal of pigeonite crystallized into large oikio-crystals enclosing olivine and chromite, followed by abundant olivine, pigeonite, augite continuous crystallization in nonpoikilitic area, the interstitial melts in between crystals finally crystallized plagioclase, ilmenite and whitlockite etc. The coexistence of low-calcium pyroxene and augite in GRV 99027 indicated that the equilibrium temperature was about 1000 similar to 1190 degrees C (avg. 1146 degrees C). Sub-solidus re-equilibration experienced by GRV 99027 is ALH 77005 approximate to GRV 99027 > LEVI 88516 > Y 793605. The shock pressure of GRV 99027 was probably 30 similar to 45 G Pa and the post-shock temperature tended to be slightly lower than 600 degrees C. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 学科主题 | Geology |
| 类目[WOS] | Geology |
| 研究领域[WOS] | Geology |
| 关键词[WOS] | LEW88516 ; PETROGRAPHY ; CHEMISTRY |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000236152700022 |
| 公开日期 | 2012-02-07 |
| 源URL | [http://159.226.72.40/handle/332002/3608]  |
| 专题 | 紫金山天文台_天体化学和行星科学实验室 |
| 作者单位 | 1.Nanjing Univ, Dept Earth Sci, State Key Lab Mineral Deposits Res, Nanjing 210093, Peoples R China 2.Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, HN,Liang, Y,Xu, WB. Petrology and mineralogy of martian meteorite GRV 99027[J]. ACTA PETROLOGICA SINICA,2006,22(2):491-502. |
| APA | Wang, HN,Liang, Y,&Xu, WB.(2006).Petrology and mineralogy of martian meteorite GRV 99027.ACTA PETROLOGICA SINICA,22(2),491-502. |
| MLA | Wang, HN,et al."Petrology and mineralogy of martian meteorite GRV 99027".ACTA PETROLOGICA SINICA 22.2(2006):491-502. |
入库方式： OAI收割
来源：紫金山天文台
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。