文献类型：期刊文献

中文题名：再论贵州省大地构造特征(四)

英文题名：Further discussion on the tectonic characteristics of Guizhou province(the Fourth)

作者：黄波 杨涛 马力克 朱和书

第一作者：黄波

机构：[1]贵州理工学院资源与环境工程学院,贵阳550003;[2]贵州有色金属和核工业地质勘查局物化探总队,贵州都匀558000;[3]贵州省地质资料馆,贵阳550001

第一机构：贵州理工学院资源与环境工程学院

年份：2021

卷号：73

期号：5

起止页码：89-96

中文期刊名：有色金属：矿山部分

外文期刊名：NONFERROUS METALS(Mining Section)

收录：CSTPCD

基金：贵州省科技计划项目(黔科合[2016]支撑2809);贵州理工学院高层次人才科研启动项目(XJGC20161101);全国海陆矿产资源图件编制更新(DD20190368共同资助)。

语种：中文

中文关键词：东亚螺旋;加厚旋涌;黔西南—黔西地区;沉积—改造型;贵州

外文关键词：East Asian spiral;crust thickening and large scale upwelling of magmatic minerals in the upper mantle;southwestern-western Guizhou;sedimentary reform type;Guizhou

摘要：从螺旋运动规律结合地壳演化探讨螺旋构造,对黔西南—黔西地区中新生代成矿地质背景作系统总结。贵州地处扬子地块西南缘,在“东亚螺旋”作用下,使120°~150°方向的黔西南—黔西地区形成了由NE向SW旋转动力和SE往NW向心挤压力,产生西厚东薄引起“加厚旋涌”效应和以垭都—紫云为主的NW向构造体系;使黔西南—黔西地区下地壳加厚深切上地幔软流圈的成矿地质背景(壳幔作用、温度、压力、高密度元素分异及塑化等),改变了软流圈运动方式,为以NW为主的走滑、逆冲推覆拉张等作用提供岩浆活动、成矿流体的运移、沉淀空间,并在碳酸盐岩—碎屑岩建造中完成了成矿元素的迁移与富集,造就了黔西南—黔西地区中新生代重要的沉积改造型矿产集中区和中低温成矿域。建立了贵州成矿地质背景的理论体系,为研究贵州大地构造演化和成矿规律奠定了基础。
Under the guidance of the spiral theory,this paper systematically summarized the Mesozoic and Cenozoic metallogenic geological background in the southwestern-western Guizhou.Guizhou province is located on the southwestern edge of the Yangtze block.Under the action of the“East Asian Spiral”,it forms the rotation force whose direction is from NE to SW and the centripetal extrusion force whose direction is from SE to NW in the southwestern-western Guizhou whose direction is 120°-150°,and results in“crust thickening and large scale upwelling of magmatic minerals in the upper mantle”effect,which caused by thickness reduction from western areas to eastern areas and the NW-directional structural system dominated by Yadu-Ziyun.Under the action of the“East Asian Spiral”,the geological background of the mineralization that the thickened lower crust cutting in the upper mantle asthenosphere(crust-mantle interaction,temperature,pressure,high-density element differentiation,and plasticization,etc.)was formed in the southwestern-western Guizhou,changed the asthenosphere movement mode,in the NW-based strike-slip and thrust nappe extension and other actions provided by the magmatic activity,ore-forming fluid migration,sedimentation space,and in the carbonate rock-clastic.The migration and enrichment of ore-forming elements was completed in the rock formation,creating an important sedimentary-reformed mineral concentration area and medium-low temperature ore-forming area in the Mesozoic and Cenozoic in the southwestern-western Guizhou area.The theoretical system of the geological background of Guizhou's mineralization has been established,which can lay the foundation for the study of the geotectonic evolution and metallogenic regularity of Guizhou.