沉积与特提斯地质2025，Vol.45Issue(2)：225-232,8.DOI:10.19826/j.cnki.1009-3850.2025.02003
川南兴文地区上二叠统龙潭组黏土岩微量元素特征:沉积环境及锂成矿指示
Trace element characteristics of the Upper Permian Longtan Formation clay rocks in the Xingwen area of southern Sichuan:Sedimentary environment and Li mineralization indicators
摘要
Abstract
The clay rocks of the Upper Permian Longtan Formation,which are related to the weathering and deposition of igneous rocks from the Permian Emeishan Large Igneous Province(ELIP),are widely distributed across southern Sichuan,providing the geological background and metallogenic conditions for the formation of lithium and other critical metal resources.This study investigates the kaolin clay rocks of Upper Permian Longtan Formation in Xingwen area of southern Sichuan,analyzing trace elements such as lithium,and exploring the provenance,sedimentary environment,and indicators for Li mineralization.The aim is to provide insights for geological prospecting and related research on key metals such as Li in southern Sichuan.The results show that Li,Ga,Nb and other critical metals are enriched in the clay rocks,making this region a promising area for exploration of Li and other critical metals.The content of inactive elements and related parameters indicate that the source of the clay rocks is basaltic and medium-acid rocks from the ELIP.Additionally,the contents and indices of Ni,Ni/Co,and δU,which reflect the sedimentary environment,indicate that the clay rocks were deposited in a saline lagoonal environment in the transition area of sea and land.According to the geochemical indicators of trace elements,geological exploration should be arranged in the distribution area of lagoon sediments in the middle to outer zone(outward direction)of the ELIP.关键词
锂/物源区/沉积环境/龙潭组/川南地区Key words
lithium/provenance area/sedimentary environment/Longtan Formation/southern Sichuan分类
天文与地球科学引用本文复制引用
唐屹,郝雪峰,潘蒙,何洋飘,彭宇,付小方..川南兴文地区上二叠统龙潭组黏土岩微量元素特征:沉积环境及锂成矿指示[J].沉积与特提斯地质,2025,45(2):225-232,8.基金项目
四川省地质调查研究院重大专项(SCIGS-CZDXM-2023002) （SCIGS-CZDXM-2023002）
四川省自然科学基金项目(23NSFSC0191) （23NSFSC0191）
国家重点研发计划"锂能源金属矿产基地深部探测技术示范"(2017YFC0602702) （2017YFC0602702）
