| 喻国东.云南东川因民角砾岩成因及分类探讨[J].矿产勘查,2012,3(1):9-15 |
| 云南东川因民角砾岩成因及分类探讨 |
| Discussion on formation cause and classification of Yinmin breccias in Dongchuan,Yunnan |
| 投稿时间：2011-02-24 |
| DOI： |
| 中文关键词: 裂谷 地堑盆地 火山 角砾杂岩 云南 东川 |
| 英文关键词: rift graben-type basin volcano breccia complex Yunnan Dongchuan |
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| 中文摘要: |
| 产于滇中昆阳群因民组中的因民角砾岩,因与东川铜矿成矿环境及矿床成因关系密切,不同时期、不同学者先后对因民角砾岩提出了不同认识,对其成因及层位归属进行过讨论。20世纪80年代后期云南东川314队综合组研究后,在因民角砾岩岩带中发现了多个火山—沉积特征,按角砾及胶结物成分、层理特征将因民角砾岩分为两大类,并将其划归因民组一段,重新认识它是昆阳裂谷早期下陷阶段生长断层—地堑盆地环境中伴随强烈海底火山多次喷发、喷溢活动生成的一套火山—沉积角砾杂岩。 |
| 英文摘要: |
| Yinmin breccias discovered in Kunyang Yinmin groups have close relations with Dongchuan copper deposits in mineralization environment and Metallogeny.Many experts gave different awareness attributions in the genesis and sequences aspects in different times. late 1980s, 314 Geological group research team of Yunnan Dongchuan considered that some parts of the breccias belts having the characteristics of volcano-gravel and sediment the breccias could be divided into two categories from the breccias figures,the cement ingredients and the bedding features .The author regards that it is a syngenetic sediments from earlier Kunyang Rift Valley, forming vocano-sediment breccia complex in the graben subsidence environment accompanied with strong undersea volcanc eruption or spraying activities profit on many occasions. |
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