全文快速搜索:          
引用本文:杨志华1 郭俊锋1 苏生瑞1 李 勇1 苏春乾1 张传林2 黑爱芝1 梁 云1. 秦岭造山带基础地质研究新进展[J]. 中国地质, 2002, (3): 246-256.
Yang Zhi-hua1, GUO Jun-feng1, SU Sheng-rui1, LI Yong1, SU Shun-qian1, Zhang Chuan-lin2, HEI Ai-zhi1, LIANG Yun1. New advances in the geological study of the Qinling orogen[J]. Geology in China, 2002, (3): 246-256(in Chinese with English abstract).
【打印本页】   【HTML】   【下载PDF全文】   查看/发表评论  下载PDF阅读器  关闭
←前一篇|后一篇→ 过刊浏览    高级检索
本文已被:浏览 1090次   下载 1280 本文二维码信息
码上扫一扫!
分享到: 微信 更多
秦岭造山带基础地质研究新进展
杨志华1 郭俊锋1 苏生瑞1 李 勇1 苏春乾1 张传林2 黑爱芝1 梁 云11,2
1.长安大学地球科学学院和国土资源部成矿作用及其动力学开放研究实验室,西安 710054;2.南京地质矿产研究所,南京 210016
摘要:
提要:“八五”—“九五”期间秦岭的多项研究中,主要取得以下新认识:①创立了抽拉-逆冲岩片构造新理论,丰富和发展了岩石圈板块或壳块运动方式的多样性;②发现了东西向的秦岭造山带从显生宙以来有南北向的隆升带和沉积盆地,特别是太白、宝鸡-佛坪-汉南隆升带的发现,将从根本上改变秦岭乃至中国中东部构造格架的认识;③南北向沉积盆地转变为东西向造山带的Ⅱ型造山带,深部构造岩片抽拉-逆冲推覆在中(新)生代陆相沉积盆地之上所形成的Ⅲ型造山带,为地壳表层增添了两种新型的造山带;④提出秦岭造山带中存在3类沉积盆地,3种盆-山转换,3个发展阶段及3种型式(Ⅰ、Ⅱ、Ⅲ)的造山带;⑤重新厘定商丹带、勉略带和二郎坪带的构造属性、形成时代,首次提出秦岭受3种体制,4个发展阶段的新观点,由抽拉构造形成的陆内造山带是秦岭最重要的划时代发展阶段;⑥提出立交桥式结构观点;⑦发现了一批前震旦系变质地层结晶岩系,重新厘定了一些地层的时代,特别是西秦岭、西成铅锌矿田中元古代地层的发现和超大型厂坝矿床产于其中,有重大的理论和实际意义;⑧提出准浊流态流体的新概念;⑨提出中国和秦岭大地构造发展演化的新全球动力学理论。
关键词:  基础地质  抽拉构造  陆内造山带  新全球动力学理论  中国秦岭
DOI:
分类号:
基金项目:国家自然科学基金(49272136)、国家计委(96-30-43)、国家科技部(96-914-01-04)、国土资源部“九五”陕甘川(95-02-022-01)项目资助的部分成果。
New advances in the geological study of the Qinling orogen
Yang Zhi-hua1, GUO Jun-feng1, SU Sheng-rui1, LI Yong1, SU Shun-qian1, Zhang Chuan-lin2, HEI Ai-zhi1, LIANG Yun11,2
1.Institue of Earth Sciences of Chang'an University, Open Research Laboratory of mineralization and Dynamics, Ministry of Land and Resources, Xi'an 710054, Shaanxi, China;2.Nanjing Institute of Geology and Mineral Resources, Nanjing 210016, Jiangsu, China
Abstract:
Abstract: During the Eighth and Ninth Five-Year Plan periods, major developments were made in geological studies of the Qinling-Bashan region: (1) creation of the new theory of choula (drawing) thrust sheet tectonics, which enriched and developed the diversity of the movement modes of the lithospheric plates or crustal blocks; (2) discoveries of N-S-trending uplift zones and sedimentary basins in the E-W-trending Qinling orogen, especially the discovery of the Taibai uplift zone and Baoji-Foping- Hannan uplift zone, which will bring about a radical change of our understanding of the tectonic framework of the Qinling Mountains and even east-central China; (3) recognition of two new types of orogen for the supracrustal layers, type-Ⅱ and type- Ⅲ, the former being E-W-trending orogens transformed from N-S-trending sedimentary basins and the latter being those formed by drawing-out and thrusting of deep tectonic sheets over Meso-Cenozoic continental sedimentary basins; (4) recognition of the existence of three types of sedimentary basins, three kinds of basin-range transformation, three development stages and three types (Ⅰ, Ⅱ and Ⅲ) of orogen; (5) reassessment of the tectonic natures and ages of the Shangdan, Mianlue and Erlangping tectonic belts and first proposition of the new view that the development of the Qinling orogen was controlled by three tectonic systems and went through four evolution stages and that the intracontinental orogen formed by drawing-out tectonism was the most important development stage; (6) first presentation of overpass structure; (7) discovery of some pre-Sinian metamorphic crystalline series and reassessment of the ages of some strata, especially the discovery of the Mesoproterozoic strata in the Xicheng lead-zinc ore field in the West Qinling, in which the superlarge Changba deposit is hosted; (8) presentation of the new concept of para-turbiditic fluid; and (9) advancement of a new geodynamic hypothesis concerning the tectonic evolution of the Qinling orogen and the continent of China.
Key words:  fundamental geology  choula (drawing-out) tectonics  intracontinental orogeny  new geodynamic hypothesis  Qinling  China