摘要
“因民角砾岩”的成因问题是一个争论已久的问题，至今仍未有统一的认识。笔者通过对滇中和东川地区“因民角砾岩”的观察，对其进行了详细的分类。根据其成因划分为沉积砾岩（包括复成分砾岩、滑塌角砾岩与石英砾岩）、火山角砾岩与构造角砾岩（包括断层角砾岩与水力张裂角砾岩）。对“因民角砾岩”成因的研究，特别是“水力张裂角砾岩”的提出，对于解决昆阳群的地层层序，了解滇中元古宙地壳演化以及进一步找矿都具有重要的意义。
The origin of Yinmin breccia has been contravercial for a long time and there are various interpretations for it.On the basis of the Petrological features,the origin of Yinmin breccia can be classified as three types: sedimentary conglomerates(Including poly-component conglomerate, slipping breccia and quartz conglomerate),volcanic breccia (volcanoclastic breccia and volcanic concealed-extrusion breccia) and tectonic breccia (including fault breccia and hydraulic fracturing breccia). The investigation into the origin of the Yinmin breccia, in Particular, identification of hydraulic fracturing breccia, is of an important significance to the understanding of the stratigraphic sequence in Kunyang Group and of Mid-Proterozoic crust evolution of Central Yunnan.
出处
《地质科技情报》
CAS
CSCD
北大核心
1995年第4期43-48,共6页
Geological Science and Technology Information
关键词
昆阳群
因民角砾岩
水力张裂
角砾岩
成因
Kunyang Group, Yinmin breccia, impermeable barrier, hydraulic fracturing
