New Stratigraphic Discovery in Qiashikansayi Canal of Eastern Altun Mountains
详细信息
- 责任者：Yang Zijiang (Institute of Geomechanics ; Chinese Academy of Geological Sciences ; Beijing 100081 ; China) ; Wang Zongxiu
- 刊名：Geology in China
- 出版年：2011
- 卷期：38(5)
- 关键词：奥陶纪 ; Ordovician ; 地层划分 ; stratigraphic classification ; 新疆 ; Xinjiang
- 页码：p.1257-1262
- 图表：4 illus., 1 table, 6 refs.
- 分类号：1200
- 出版序号：1914
- issnNo：ISSN1000-3657
- isbnNo：CN11-1167/P
摘要
Massive and almost unmetamorphosed marine sedimentary strata mainly composed of volcanic rocks, clastic rocks, carbonate rocks are exposed on the northern slope of the Altun Mountains. Based on measuring the lateral section in this area, the authors have found that the strata unconformably overlie mesometamorphic Changchengian strata. Fossils such as radiolarian and sponge spicule are present in siliceous rocks of the study area, and studies show that these fossils belong to Middle-Late Ordovician period.