地震地质 ›› 1997, Vol. 19 ›› Issue (3): 211-217.

• 科研简报 • 上一篇    下一篇

小江断裂带中段盆地的发育阶段及其与区域构造运动的关系

宋方敏1, 汪一鹏1, 沈军1, 曹忠权1, 申旭辉1, 俞维贤2   

  1. 1. 国家地震局地质研究所, 北京, 100029;
    2. 云南省地震局, 昆明, 250204
  • 收稿日期:1996-06-30 修回日期:1996-12-31 出版日期:1997-09-09 发布日期:2009-11-25

THE DEVELOPMENT STAGES OF THE BASINS ALONG THE MIDDLE SEGMENT OF THE XIAOJIANG FAULT ZONE AND ITS RELATION TO REGIONAL TECTONIC MOVEMENT

Song Fangmin1, Wang Yipeng1, Shen Jun1, Cao Zhongquan1, Shen Xuhui1, Yu Weixian2   

  1. 1. Institute of Geology, SSB, Beijing 100029;
    2. Seismological Bureau of Yunnan Province, Kunming 250204
  • Received:1996-06-30 Revised:1996-12-31 Online:1997-09-09 Published:2009-11-25

摘要: 小江断裂带中段新生代发育的系列盆地,根据其发育阶段可分为始新世-渐新世、上新世-早更新世、中更新世-晚更新世和晚更新世-全新世4个阶段,并根据发育持续性可分为继承性、阶段性、复活性、新生性4种类型。由大比例尺填图所获资料及前人成果,介绍了各阶段盆地的分布特征和成因机制,讨论了盆地发育与区域构造运动、断裂活动的关系。

关键词: 小江断裂, 盆地, 断层活动

Abstract: Along the middle segment of the Xiaojinag fault zone 21 basins of different scales have developed since Cenozoic. They have 4 different stages of evolution,i.e. the Eocene Oligocene,the Pliocene-early Pleistocene,the middle Pleistocene and the late Pleistocene Holocene stages. Among them,the Pliocene-early Pleistocene stage was the period of great prosperity of the basins. According to the duration time of the development of the basins,they can be classified into inherited basin,staged basin,rejuvenated basin and new born basin. The basins can be assigned to depressed and non-depressed origin. The Eocene Oligocene stage was dominated by non-depressed basins,the Pliocene-early Pleistocene stage was dominated by both depressed and non-depressed basins,while the stage after the middle Pleistocene was dominated by depressed basins. The depressed basins can further be divided into thrust type,graben-semigraben type and pull-apart type basins. Based on the analysis of the formation mechanism,plane distribtuion and the type of deposition of the basins,the authors have discussed the characteristics of the regional crustal movement in the different periods of Cenozoic along the southeastern margin of Qinghai Tibet Plateau and in Sichuan-Yunnan region.

Key words: Xiaojiang fault, Basin, Faulting