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东昆仑五龙沟金矿矿集区韧性剪切带构造变形特点研究

寇林林, 张森, 钟康惠, 田承盛

寇林林, 张森, 钟康惠, 田承盛. 东昆仑五龙沟金矿矿集区韧性剪切带构造变形特点研究[J]. 中国地质, 2015, 42(2): 495-503. DOI: 10.12029/gc20150210
引用本文: 寇林林, 张森, 钟康惠, 田承盛. 东昆仑五龙沟金矿矿集区韧性剪切带构造变形特点研究[J]. 中国地质, 2015, 42(2): 495-503. DOI: 10.12029/gc20150210
KOU Lin-lin, ZHANG Sen, ZHONG Kang-hui, TIAN Cheng-sheng. A study of the deformation characteristics of the ductile shear zone in the Wulonggou gold ore concentration area, East Kunlun,Qinghai[J]. GEOLOGY IN CHINA, 2015, 42(2): 495-503. DOI: 10.12029/gc20150210
Citation: KOU Lin-lin, ZHANG Sen, ZHONG Kang-hui, TIAN Cheng-sheng. A study of the deformation characteristics of the ductile shear zone in the Wulonggou gold ore concentration area, East Kunlun,Qinghai[J]. GEOLOGY IN CHINA, 2015, 42(2): 495-503. DOI: 10.12029/gc20150210

东昆仑五龙沟金矿矿集区韧性剪切带构造变形特点研究

基金项目: 青海省国土资源厅资助项目“青海省都兰县五龙沟地区金矿成矿规律研究及大比例尺成矿预测”(青国土资矿[2008]24)资助。

A study of the deformation characteristics of the ductile shear zone in the Wulonggou gold ore concentration area, East Kunlun,Qinghai

  • 摘要: 提要:野外构造解析和显微构造分析表明,五龙沟地区经历了长期构造演化,具有多层次多期构造作用产物叠生特点。可分为早印支期(240 Ma左右)及其以前的韧性变形;晚印支—早燕山期的(235~197 Ma)的脆韧性变形;晚燕山期以来,尤其早-中喜马拉雅期(51~21 Ma)的脆性变形。晚印支期—早燕山期的脆-韧性变形,与造山隆升相伴,表现为先存变质核杂岩构造北东翼构造岩类的褶皱、断裂,奠定了五龙沟地区北西西向的构造主线,即形式上的数条北西西向韧剪带平行展布,从韧性变形、韧-脆性变形到脆性变形的构造运动依次为左行正滑→左行逆冲→右行正滑。
    Abstract: Abstract: Field structural analysis and microstructural analysis show that Wulonggou area has experienced a long-term structural evolution, characterized tectonically by multi-level and multi-storeyed products. Its can be broadly divided into the ductile deformation that occurred in early Triassic (240 Ma ±) and its previous period, late Indosinian - early Yanshanian (235-197 Ma) brittle-ductile deformation; brittle deformation that occurred after late Yanshanian period, especially in the early - middle Himalayan period (51-21 Ma). Late Triassic-Early Yanshanian brittle-ductile deformation was accompanied by orogenic uplift, and its performance was exhibited by the folding and faulting of the pre-existing metamorphic core on the northeast wing of the tectonites, which laid the foundation of the NWW-trending main tectonic line in the Wulonggou area, i.e., a number of formal NWW-trending ductile shear zones exhibit parallel distribution, with the tectonic activities developed in order of left-handed positive sliding- left-handed thrusting →right-handed positive sliding.
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出版历程
  • 刊出日期:  2015-04-24

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