柴达木-祁连山地区前寒武系-寒武系剖面地层柱状图

长期以来，原特提斯洋在新元古代至早古生代的演化受到了学界的广泛关注。祁连造山带的北祁连增生带及南祁连增生带被认为是原特提斯洋的区域分支，记录了大洋演化的完整过程。前人针对祁连山地区原特提斯洋的演化主要利用岩浆岩及变质岩的岩石学研究。然而多数剖面的仍缺乏相对准确的年代学限定。本次科考考察了多条前寒武系-寒武系剖面，重点采集了碎屑锆石、碳氧同位素与古生物化石样品，为该地区年代学工作打下基础。基于野外考察、室内实验分析和化石鉴定，初步绘制了主要研究剖面（白杨沟、大豁落山、小红泉、哈什哈尔、杏儿沟、拉脊山顶以及水泉湾采石场）的柱状图。For a long time, the evolution of the Proto-Tethys Ocean from the Neoproterozoic to the Early Paleozoic has received extensive attention from the academic community. The North Qilian Accretionary Belt and South Qilian Accretionary Belt of the Qilian Orogenic Belt are regarded as regional branches of the Proto-Tethys Ocean, which record the complete process of oceanic evolution. Previous studies on the evolution of the Proto-Tethys Ocean in the Qilian Mountains mainly relied on petrological research of magmatic and metamorphic rocks. However, most sections still lack relatively accurate chronological constraints. This field expedition investigated multiple Precambrian-Cambrian sections, focusing on collecting detrital zircon, carbon and oxygen isotope and paleontological fossil samples, which laid a foundation for chronological research in this area. Based on field investigations, laboratory experimental analyses and fossil identification, preliminary stratigraphic columns of the main research sections (Baiyanggou, Dahuoluoshan, Xiaohongquan, Haxihar, Xing'ergou, Lajiding and Shuiquanwan Quarry) were compiled.

搜集汇总

背景与挑战

背景概述

该数据集提供了柴达木-祁连山地区前寒武系至寒武系剖面的地层柱状图，旨在研究原特提斯洋在新元古代至早古生代的演化过程。数据集基于野外考察和实验分析，绘制了多个关键剖面的柱状图，以补充该地区年代学数据，数据以Tiff格式存储，适用于地质学研究。