柴北缘东段石炭纪沉积特征及原型盆地恢复

详细信息

Sedimentary characteristics of the Carboniferous strata and reconstruction of the prototype basin in the eastern part of northern Qaidam Basin, Qinghai

1. Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, Guangdong, China;
2. Graduate University, Chinese Academy of Sciences, Beijing 100049, China;
3. School of Marine Sciences, Sun Yat-Sen University, Guangzhou 510275, Guangdong, China

摘要: 在残留盆地展布、地层发育特征及大地构造背景分析的基础上,恢复了柴北缘东段石炭纪的原型盆地格局。研究表明:石炭纪时期,柴北缘处于"三洋夹两陆"的构造背景,经历了早石炭世的两次海侵和晚石炭世的持续海侵;受NWW向断裂系统的控制,盆地整体为昆仑弧后裂谷盆地,但由南向北构造发育特征表现为弧后陆表海盆地-陆表海盆地内低隆起-弧后裂谷盆地的组合特征。石炭系沉积以后,柴北缘经历了多期不同性质的构造运动,石炭纪后期变形强烈,原型盆地特征被彻底改造。
- 柴北缘东段 /
- 石炭纪 /
- 沉积特征 /
- 原型盆地
Abstract: The reconstruction of the Carboniferous prototype basin is based on the stratal distribution, lithology and tectonic setting of the residual basin in the eastern part of northern Qaidam Basin. During the Early Carboniferous, the study area once went through two phases of transgressions. Controlled by the NWW-trending fault systems, the entire basin is roughly aligned as the Kunlun back arc rift basin, indicative of the intrabasinal low relief-backarc rift basin association in the back-arc epeiric sea basin-epeiric sea basin. The severe tectonic deformation during the latest Carboniferous led to the complete modification of the prototype basin.
- eastern part of northern Qaidam Basin /
- Carboniferous /
- sedimentary characteristics /
- prototype basin