吉林省梨树县绕湾沟大理岩矿地质特征及找矿标志  

Geological features and prospecting criteriaof the Raowangou marble deposit in Lishu County, Jilin Province

作　　者：王帅[1] 于强[1] 李岩[1] WANG Shuai;YU Qiang;LI Yan(The Third Geological Survey of Jilin Province,Siping 136000,Jilin,China)

机构地区：[1]吉林省第三地质调查所,吉林四平136000

出　　处：《吉林地质》2023年第1期32-36,73,共6页Jilin Geology

摘　　要：在总结梨树县绕湾沟大理岩矿地质特征的基础上,对矿床成因进行了分析。矿床赋存于上石炭统磨盘山组含燧石结核大理岩中。在晚古生代石炭纪晚世,该区域处于浅海—海滨相,沉积了磨盘山组碳酸盐岩,形成了灰岩、含燧石结核灰岩及燧石结核灰岩等。之后,经华力西—燕山期构造运动而发生区域变质作用,主要是重结晶作用,形成大理岩、含燧石结核大理岩和燧石结核大理岩,矿床的成因类型为沉积变质型。On the basis of summarizing the geological features of the Raowangou marble deposit in Lishu County,the genesis of the deposit is analyzed.The deposit occurs in the chert-bearing marble of the Mopanshan Formation of Upper Carboniferous.In the late Carboniferous of the Late Paleozoic,the area was in the neritic and coastal facies,where the carbonate rocks of the Mopanshan Formation were deposited,forming limestone,chert-bearing nodule limestone and chert nodule limestone.Later,regional metamorphism occurred through Variscan-Yanshanian tectonic movement,mainly recrystallization,forming marble,marble containing chert nodules and marble with chert nodules.The genetic type of the deposit is sedimentary metamorphic type.

关 键 词：地质特征 找矿标志 大理岩矿 沉积变质型 梨树县绕湾沟 

分 类 号：P619.223[天文地球—矿床学]