2015-2016年中国准噶尔西部塔尔巴哈台的增生杂岩的地球化学数据
收藏国家地球系统科学数据中心2020-05-20 更新2024-03-04 收录
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资源简介：
数据在中国地质科学院国家地质实验中心通过Q-ICP-MS(Agilent 7500a)电感耦合等离子质谱仪和COMPex Pro laser完成，根据塔尔巴哈台杂岩浊积岩和浅水沉积物的碎屑锆石年龄，主要峰值年龄下限为350~370 Ma，中二叠世的上限为262.3 Ma。我们认为塔巴加泰洋的俯冲可能始于晚泥盆世，并持续到中二叠世。考虑到哈萨克斯坦奥陶系北部具有相似的时空格局，我们提出了西CAOB的构造模式，包括奥陶系到中二叠世的增生与融合。
The data were generated at the National Research Center for Geoanalysis, Chinese Academy of Geological Sciences, using an Agilent 7500a Q-ICP-MS (inductively coupled plasma mass spectrometer) and a COMPex Pro laser. Based on detrital zircon ages of turbidites and shallow-water sediments from the Tarbagatai Complex, the lower bound of the main peak age ranges from 350 to 370 Ma, with the upper limit of the Middle Permian being 262.3 Ma. We consider that the subduction of the Tarbagatai Ocean likely initiated in the Late Devonian and persisted into the Middle Permian. Considering that the northern Ordovician strata of Kazakhstan share similar spatiotemporal patterns, we propose a tectonic model for the Western Central Asian Orogenic Belt (CAOB) that includes accretion and amalgamation from the Ordovician to the Middle Permian.
提供机构：
西北大学
创建时间：
2020-05-20
