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横断山系新构造基本问题
Alternative TitleTHE BASIC PROBLEMS OF NEOTECTONICS IN HENGDUAN MOUNTAIN SYSTEM
Language中文
陈富斌1; 赵永涛1; 陈荣华2
Source Publication横断山系新构造研究
Editor陈富斌 主编
Pages13-23
1992
Publisher成都地图出版社
Publication Place成都
Keyword新构造 横断山系
Abstract自C·C·舒里茨于21世纪20 年代末在西天山地区发现如构造以来.世界许多地区的研究证实了它的存在。在B·A· 奥勃鲁契夫(1948) 提议将新构造运动从阿尔卑斯旋迥中区分开来、划分新构造期之后.新构造已发展成为地学的一个独立的研究领域。这个领域研究的是决定地球现代地貌的地壳发展阶段,而这个阶段又是人类产生与发展的时期.地壳运动以及由此而引起的自然环境的变迁和对人类活动的限制都属于它的范畴,内容相当广泛,直接涉及第四纪地质学、地貌学、大地构造学、地球物理学等地质学的许多领域.在一定程度上还与自然地理学、大地测量学、天文学、生物学、土壤学、生态学等有关。概括地讲,新构造的研究内容包含岩石固动力学、区域新构造、应用新构造三大部分。其中岩石圈动力学和应用新构造研究都要以区域新构造研究为前提。区域新构造研究是新向选领域的基础性工作,受到许多国家的研究者的重视,象西天山、高加索、阿尔卑斯、喀尔巴阡、兴都库什等年青山地,是这一领域研究比较活跃的地区。在我国,区域新构研究从50 年代后期起步,70 年代后期以来得以加强并开始较系统的总结,在理论和实践上都取得了可喜的进展。横断山系是地球大陆上最年轻的南北走向山系之一,处在青藏高原一新构造上曾被称为“独特的、高高隆起的地盾” 一的东部边缘,新构造运动显现强烈,系统地研究其规律,是近年我因区域新构造研究的重要工作之一。本文所探讨的新构造期、新构造类型、新构造运动的强度与趋势、新构造运动的资源与环境效应等问题,就是该项研究的初步总结。
Other Abstract

The basic problems of neotectonics in Hengduan Mountain System are summarized as follows:
1) neotectonic period and relations between neotectonic period and Himalayan period.
2) the shape types of neotectonics and the movemental types of neotectonics.
3) neotectonic inheritance.
4)strength and trend of neotectonic movement.
5) resources effects of neotectonic movement
6) environmental effects of neotectonic movement.
7) neotectonic strees field and driving mechanism
8) neotectonic orogenesis and the formation of Hengduan Mountain System.

In Hengduan Mountain System. the limit of neotectonic movement is determined by the desintegration of paleoplanation surface in wide area. Xigeda Formation Which is the earlist sediments 、in graben basin and a angular unconformity to Precenozoic or Eogene System. The present relief in this region is developed following block-faulting movemnt on the basis of paleoplanation surface. The block - faulting period is the neotectonic period . The lower boundary of the neotectonic p盯iod corresponds to Gauss/Gilbert in the paleomagnetic chronological scale of Late Cenozoic. which is 3. 4 Ma BP. or so. The lacuna under the boundary to Late Miocene shows that there is a paleoplanation period. The hiatuses and unconformities above the boundary show that the fluctuation of neotectonic movement is frequent.
The boundary is starting point in studying the basic problems of neotectonics .

Mts. Hengduan is a S-N tectonic zone composed of (from west to east) Himalaya folding belt. Yanshan folding belt. 1ndo-Sinain folding belt and a part of South-West China Platform. and come down in one continous line with E-W tectonics in Tibetan Plateau. constructing a huge arcuate tectonic system in continent. According to the amount of data. this tectonic system has undergone many times of orogenic-planation cycles; until the late Pliocene. it was planned off to form a peneplain. On this basis. with the upwarping of Tibetan Plateau. the transitional area at the front part of the plateau was subjected to strong erosion. leading the formation of Mts. Hengduan. Accordingly. Mts. Hengduan is a neotectonic orogenic belt resulted from block upwartping-erosion in continent rather than folding reversion in geosynclinal area. Even in the recent. 1ndia Plate is continually moving north , ward. and Tibetan Plateau is still under its sustained compression. As a fact. Mts. Hengduan has also been in the upwarping state by now.

ISBN7-80544-044-1
Document Type专著章节文集论文
Identifierhttp://ir.imde.ac.cn/handle/131551/9608
Collection成都山地所知识仓储(2009年以前)
Affiliation1.中国科学院水利部成都山地灾害与环境研究所
2.重庆师范学院
Recommended Citation
GB/T 7714
陈富斌,赵永涛,陈荣华. 横断山系新构造基本问题. 横断山系新构造研究. 成都:成都地图出版社,1992:13-23.
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