构造谷 structural valley; structuralvalley; tectonic valley
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The study areas are located in the jinshajiang zone , nw yunnan and sw part of the shizong - mile zone ( jianshui ) , se yunnan respectively , and tectonically belong to the east part of the paleo - tethys tectonic domain . the jinshajiang zone in nw yunnan was a joint terrain between the yangtze and the gondwana blocks , and the shizong - mile zone delineates a suture line between the yangtze and cathaysian blocks 研究区分别位于滇西北金沙江带和滇东南师宗-弥勒带西南段建水地区,构造上位于古特提斯构造域的东段,其中滇西北金沙江带是扬子陆块与冈瓦纳陆块的交汇部位,而师宗-弥勒带则分隔了扬子陆块与华夏陆块。
Based on the study of geological background and structural settings , and with the geological event as the main thread , the author analyzed the development history of the regional ore - forming structures , especially , the new - forming and inherited structural systems since yanshanian movement , and the range - basin structures of marginal - pacific ore - forming domain , and the thermo - uplifting structure of the lushan ore - body as well as the yiwulushan metamorphic core complex , which are three different scale ore - forming structural systems 论文在紧密结合地质背景、构造背景研究的基础上,以地质事件为主线,分析该地区域成矿构造的成生历史,特别是燕山运动以来继承及新生的构造体系格架与滨太平洋成矿构造域的盆岭构造、闾山岩体热隆、变质核杂岩等3个不同级别的区域成矿构造系统。
The qiongzhong and danxian granites are belong to the kcg - type ( k - rich calc - alkaline ) granitoids according to the tectonic nomenclature by barbarin ( 1999 ) . these foliated kcg - type granites with original orientated structure are the results generated in a changing geodynamic orogenic environment with alternating compressional to extensional stress field . this suggests that hainan island has been a part of south china since latest permian , and been major in extrusion environment of the tethys tectonic system 根据barbarin ( 1999 )分类,琼中和儋县岩基花岗岩属于高k及含钾长石斑晶的钙碱性花岗岩,同时它们具有原生定向构造,是挤压?松弛?挤压的构造演化过程的产物,表明海南岛从二叠纪末期开始已经是华南大陆的一部分,主要受到了特提斯构造域的影响。