Sedimentary Environment of Carboniferous Conglomerate in Yinwacao of North Qilian Mountains
详细信息
- 责任者：Meng Yuanku (School of Earth Science and Resources ; China University of Geosciences ; Beijing 100083 ; China) ; Shi Fajian
- 刊名：Journal of Guilin University of Technology
- 出版年：2012
- 卷期：32(4)
- 关键词：砾岩 ; conglomerate ; 祁连山 ; Qilian Mountains
- 页码：p.475-481
- 图表：2 tables, 25 refs.
- 分类号：0803
- issnNo：ISSN1674-9057
- isbnNo：CN45-1375/N
摘要
Based on the analysis of gravel fabric characteristics of the Carboniferous Yanghugou Formation and north Qilian Mountains sedimentary environment and adjacent old land-mountains, origins, sources, hydrodynamic conditions, climate environment and geomorphy and tectonics of Yinwacao are illustrated. Yanghugou Formation is composed of marine basal conglomerate during Late Carboniferous. The conglomerate layers of Yanghugou Formation are multi-periods, multi-sources, and unstable shallow marine sediment, indicating a continuous sedimentation of transgression and regression, and an environment from dry-cold to warm-humid. The conglomerate was derived from the most west margin of Alashan massif, next to Qaidam archicontinent.