花岗岩与大地构造

发布时间：2018-07-05 05:25

本文选题：花岗岩 + 构造标志体　；参考：《岩石学报》2017年05期

【摘要】：花岗岩(广义)是地球有别于其它星球及地球上大陆地壳有别于大洋地壳的物质标志,是大陆上分布最广的岩石之一。在已有研究基础上,本文系统阐述了花岗岩大地构造的内涵、研究思路、研究内容和发展方向。花岗岩大地构造将花岗岩视为一种构造标志体、地质体,是从花岗岩角度,探索解决大地构造问题,其研究内容可概括为物理特性(构造)、物质组成(岩石地化)和年代学三大方面,具体研究内容包括:(1)巨量花岗岩浆侵位的物理特性变化及其构造意义,包括岩浆上升迁移、汇聚定位及岩体(带)形成/构建过程;(2)花岗岩体变形改造及其构造意义;(3)花岗岩物源与大陆生长及深部结构,以新老物质组成,划分造山带类型;(4)巨型花岗岩带发育过程与大陆聚散,探索超大陆和中小板块聚散的岩浆响应。花岗岩大地构造丰富了大地构造研究内容,也有助深化花岗岩体(带)形成、发育过程和构造背景的认识。它的提出是当今地球科学学科交叉、融合发展的必要。
[Abstract]:Granite (generalized) is a material symbol of the difference between the earth and other planets and the continental crust of the earth from the oceanic crust, and is one of the most widely distributed rocks on the continent. On the basis of existing research, this paper systematically describes the connotation, research ideas, research contents and development direction of granite geotectonics. Granite tectonics regard granite as a kind of structural marker and geological body, which is to explore and solve the tectonic problems from the angle of granite. The research contents can be summarized as physical characteristics (tectonics), material composition (geochemistry) and geochronology. The specific research contents include: (1) the changes of physical characteristics and tectonic significance of giant granitic magma emplacement, including magmatic uplift and migration, Convergent location and formation / construction process of rock mass (belt); (2) deformation and reconstruction of granite body and its tectonic significance; (3) granite provenance and continental growth and deep structure, consisting of new and old materials, (4) the development process of giant granite belt and continental accumulation and dispersion to explore the magmatic response of supercontinent and small and medium plates. Granitoid tectonics enriches the study of geotectonics and helps to deepen the understanding of the formation, development process and tectonic setting of granite bodies (belts). It is necessary to combine and develop the subject of earth science.
【作者单位】：中国地质科学院地质研究所;中国地质科学院矿产资源研究所;
【基金】：国家重点基础研究发展计划(2013CB429803) 国家自然科学联合基金(U1403291) 中国地质调查局项目(121201102000150021、12120113096500、12120113094000)联合资助
【分类号】：P542;P588.121

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