Provenance of the Early Permian bauxitic claystone in Huayingshan region,Sichuan Basin,South China:Constraints from U-Pb ages and trace elements of detrital zircons

作     者：Tian-Jia Liu Xun-Lian Wang Zhen-Tao Wang Xi-Fang Liu Peng-Cheng Ju Jia-Ai Zhong Tian-Jia Liu;Xun-Lian Wang;Zhen-Tao Wang;Xi-Fang Liu;Peng-Cheng Ju;Jia-Ai Zhong

作者机构：School of the Earth Sciences and ResourcesChina University of Geosciences(Beijing)Beijing 100083China Key Laboratory of Metallogeny and Mineral Resources AssessmentInstitute of Mineral ResourcesChinese Academy of Geological SciencesBeijing 100037China State Key Laboratory of Continental DynamicsDepartment of GeologyNorthwest UniversityXi'an 710069Shaanxi ProvinceChina 405 Geological Brigade of Sichuan Bureau of Geology and Mineral ResourcesDujiangyan 611830Sichuan ProvinceChina 

出 版 物：《Journal of Palaeogeography》 (古地理学报（英文版）)

年 卷 期：2023年第12卷第2期

页      面：211-228页

核心收录：

学科分类：081803[工学-地质工程] 08[工学] 0818[工学-地质资源与地质工程] 

基　　金：supported financially by the National Key Research and Development Program of China(Project 2017YFC0602704) the Research Project of Xi'an Geological Survey Center of China Geological Survey(Project DD20189612) 

主　　题：Huayingshan Dazhuyuan Formation Bauxitic claystone Detrital zircon Mixed sources 

摘      要：The Early Permian bauxite in the Sichuan Basin is an important part of karst-type bauxite deposits in South China Block and its provenance is poorly *** we present results of mineralogy,wholerock geochemistry,detrital zircon U-Pb ages and trace element compositions of the bauxitic claystone from the Lower Permian Dazhuyuan Formation and those of the siltstone from the underlying Lower Silurian Hanjiadian Formation in Huayingshan region,Sichuan Basin,South China Block to constrain the provenance of the bauxitic *** zircons from bauxitic claystone and siltstone have similar age spectra,and the ages of bauxitic claystone are classified into five groups of 2600-2200 Ma,1800-1600 Ma,1200-900 Ma,900-650 Ma,and 650-400 Ma *** of the siltstone are classified into four groups of 2600-2200 Ma,1200-900 Ma,900-650 Ma,and 650-400 Ma *** propose that the bauxitic claystone in the study region has mixed sources:the siltstone of the Lower Silurian Hanjiadian Formation probably constitutes the dominant source,and the Late Paleoproterozoic magmatic rocks along the western margin of the Yangtze Block are probably the secondary ***,the source materials of the Hanjiadian Formation siltstone are mainly sourced from Grenville-aged magmatic rocks in the Cathaysia Block and Neoproterozoic magmatic rocks in the Jiangnan orogen,with minor contributions from the underlying clastic sediments in the Cathaysia Block and Pan-African magmatic rocks in the orogen in eastern Gondwana.