摘要
本文作者根据野外考察和大量室内分析化验资料,对阿尔金山的前古生代—古生代地层沉积层序提出了新的看法。认为太古界和中上元古界构成了阿尔金山断隆带的结晶基底,古生界盖层仅零星分布。下奥陶统超覆不整合在青白口系和蓟县系之上,缺失寒武系、上奥陶统、志留系及下石炭统,中上石炭统不整合在中上元古界的不同层位上,且中石炭统顶底层位不全,下二叠统和上石炭统为连续沉积。
Based on the field reconnaissance results and a great quantity of laboratery analysis data, the author presentssome new views about the Pre-Paleozoic to Paleozoic sedimentary-stratigraphic sequence of Altun Mountain as fol-lows: It was the Archaeozoic and Middle-Upper Proterozoic that consisted of the crystalline basement of Altun's fault-uplift zone. Its Paleozoic (cap rock) was in a scattered distribution. Lower Ordovician stratum was overlapped un-conformably on the Qingbaikou and Jixian systems, which resulted in an absence of the Cambrian, Upper Ordovi-cian, Silurian and Lower Carboniferous stratum occurred unconformably on the different strata of the Middle - Up-per Proterozoic. The top and bottom of the Middle Carboniferous were absent in some area, while the Upper Car-boniferous and Lower Permian were in a continuous sedimentation.
出处
《新疆石油地质》
CAS
CSCD
北大核心
1992年第3期228-239,共12页
Xinjiang Petroleum Geology
关键词
地层
沉积
层序
前古生代
古生代
Altun Mountain
Pre-Paleozoic
Paleozoic
Sedimentary-stratigraphic sequence
Condonts zone
Crystalline basement
Cap rock
