鄂拉山查查香卡地区晚三叠世火山岩产出环境分析

收稿日期: 2011-11-10

修回日期: 2011-12-28

刊出日期: 2012-03-15

Analysis of Environment for Late Triassic Volcanic Rocks in Chachaxiangka, Elashan

Received Date: 10 November 2011

Revised Date: 28 December 2011

Publish Date: 15 March 2012

摘要: 通过对查查香卡地区晚三叠世火山岩岩石学研究,确定该套火山岩属晚三叠世鄂拉山组,属钙碱性系列。喷出时的大地构造环境为陆内造山环境,该火山岩最初可能形成于大陆边缘环境,由于A型俯冲构造活动,测区乃至鄂拉山地区产生一系列右旋走滑断裂带,受北西向右旋走滑断裂的影响,岩石孔隙加大,并出现强烈的热流活动,导致岩浆沿这些断裂带喷出地表。
- 岩石学 /
- 陆内造山 /
- 构造环境 /
- 东昆仑晚三叠世火山岩带 /
- 查查香卡
Abstract: Through study on Petrology of the Late Triassic volcanic rocks from Chachaxiangka area,the volcanic rocks belong to Elashan Formation and are calc-alkaline series.Considering the tectonic setting of intra-continental orogenic environment,the Late Triassic volcanic rocks initially may form in the continental marginal environment.Researched area and even Elashan area produced a series of right rotary sliding fault zone because "A" type subduction.Affected by northwestern Right-lateral strike slip fault zone,rock pore increased and strongly heat flow activities appears coursing magma spray out surface along these fault zone.
- petrology /
- intra-continental orogenic /
- tectonic environments /
- Late Triassic volcanic belt of Eastern Kunlun mountains /
- Chachaxiangka