铀矿地质2026，Vol.42Issue(1)：47-60,14.DOI:10.3969/j.issn.1000-0658.2026.42.004
松辽盆地通辽地区上白垩统末次铀成矿期古水动力条件研究
Analysis on Paleo-hydrodynamic Condition of Last Uranium Metallogenic Phase in Tongliao Area of Songliao Basin
摘要
Abstract
Paleo-hydrodynamic condition is one of the main factors controlling the metallization of sandstone type uranium deposits,the restoration of the ancient basin's hydrodynamic conditions,especially during the mineralization period are very important in studying the metallogenic pattern and guiding the exploration and deployment of sandstone type uranium deposits.In this article,drilling,seismic and other data were used to reconstruct the ancient hydrodynamic conditions by restoring the geological distribution,topographic distribution,lithological distribution and other characteristics of the strata after eroding the strata formed after the last uranium mineralization pahse.The distribution conditions of strata,topography,and lithology in the last uranium mineralization phase(21 Ma)in Tongliao area of Songliao Basin was restored,and the ancient hydrodynamic conditions were analyzed.The construction of a structural skylight provided favorable hydrodynamic conditions for the formation of uranium deposits,and Qianjiadian uranium deposit was found mainly spreads around the edge of Baixingtu structural skylight.Based on this recognition,three structural skylights with similar uranium mineralization were inferred as the potential favorable areas.The reconstruction method of paleo-hydrodynamic condition in the last uranium metallogenic phase was proposed based on drilling data of high reliability and easy operation.The method can analyze the recharge,runoff,and discharge conditions of groundwater during the mineralization period,providing support for the study of uranium mineralization mechanisms and exploration deployment.关键词
古水动力/铀成矿作用/砂岩型铀矿床/松辽盆地/通辽地区Key words
paleo-hydrodynamic/uranium mineralization/sandstone-type uranium deposit/Songliao Basin/Tongliao area分类
天文与地球科学引用本文复制引用
林效宾,秦明宽,贾立城,宁君,贺锋,邢作昌,田明明,张云龙..松辽盆地通辽地区上白垩统末次铀成矿期古水动力条件研究[J].铀矿地质,2026,42(1):47-60,14.基金项目
铀资源探采与核遥感全国重点实验室基金项目"砂岩型铀矿成矿期古水动力系统研究"(编号:NKLUR-2024-YB-001)、中核集团集中研发项目(编号:中核科发2021-143号)联合资助. （编号:NKLUR-2024-YB-001）
