The reclassification of weathering degree of Antarctic ordinary chondrites

	The reclassification of weathering degree of Antarctic ordinary chondrites
其他题名	南极普通球粒陨石风化等级的重新厘定
	Shang YL(尚颖丽); Li SJ(李世杰); Wang SJ(王世杰); Li XY(李雄耀); Li Y(李阳)
	2016
发表期刊	岩石学报
卷号	32 期号:1 页码:71-76
摘要	There is a contradiction when categorizing some ordinary chondrites (OCs) from Grove Mountains (GRV), Antarctica, according to Wlotzka' s criteria. That is only a minor of metal and troilite (less than 20%) were replaced by oxide while silicates being partly weathered, especially along cracks. The weathering degree of these OCs are all W1 if categorized by the oxidation of metal and troilite; however, they should be W5 by the weathering degree of silicates. Therefore, we propose new criteria to categorize the weathering degree of these OCs, in which the weathering degree of metal and silicates are categorized into 5 and 4 progressive stages (they are W(m)0, W(m)1, W(m)2, W(m)3 and W(m)4 for metal and W(s)0, W(s)1, W(s)2 and W(s)3 for silicates), respectively. Consequently, meteorites GRV 021588, GRV 021636, GRV 021772 and GRV 021957 which can' t fit Wlotzka' s criteria are all W(m)1-W(s)1. Furthermore, GRV 023312 is W(m)3-W(s)0 type, which is the same with W3 in Wlotzka' s criteria.
学科领域	月球与行星科学
收录类别	CSCD
语种	中文
引用统计
文献类型	期刊论文
条目标识符	http://ir.gyig.ac.cn/handle/352002/6141
专题	月球与行星科学研究中心_月球与行星科学研究中心_期刊论文环境地球化学国家重点实验室天体地球化学研究组
推荐引用方式 GB/T 7714	Shang YL,Li SJ,Wang SJ,et al. The reclassification of weathering degree of Antarctic ordinary chondrites[J]. 岩石学报,2016,32(1):71-76.
APA	Shang YL,Li SJ,Wang SJ,Li XY,&Li Y.(2016).The reclassification of weathering degree of Antarctic ordinary chondrites.岩石学报,32(1),71-76.
MLA	Shang YL,et al."The reclassification of weathering degree of Antarctic ordinary chondrites".岩石学报 32.1(2016):71-76.

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