摘要
对马鬃山锰成矿带矿床成因类型划分和锰矿床时空演化规律进行了研究,探讨了马鬃山一带锰矿的成矿地质条件及其时空演化规律。研究区位于甘肃省北山中带苦泉-玉石山-大红山-马鬃山锰矿带东段,呈近东西向展布,东西长约270 km,南北宽20~60 km,该锰矿带划分为北、中、南3个亚矿带。北亚矿带多属沉积变质-热液型锰矿,中亚矿带多属沉积改造型锰矿,南亚矿带多属热液型锰矿。区内长城系古铜井群是重要的含锰岩系,其中蓟县系大豁落山组大理石含锰质较高,以砂页岩、页岩兼夹含锰灰岩、含锰硅质岩等岩性组合成为含锰地层。通过研究将该成矿带分为晋宁期、加里东期、华力西期、印支-燕山期不同的构造-岩浆、沉积成矿系列,以此建立苦泉-玉石山-大红山-马鬃山锰矿带成矿模式,为该区域矿床勘查工作提供相关参考。
A study was conducted on the classification of genesis types and spatiotemporal evolution laws of manganese deposits in Mazongshan manganese mineralization belt,exploring the geological conditions and spatiotemporal evolution laws of manganese deposits in Mazongshan area.The research area is located in the eastern section of the Kuquan-Yushishan-Dahongshan-Mazongshan manganese ore belt in the northern mountainous area of Gansu Province.It is distributed in a nearly east-west direction,with an east-west length of about 270 km and a north-south width of 20~60 km.The manganese ore belt is divided into three sub ore belts:northern,central and southern.North Asian ore belt mostly belongs to sedimentary metamorphic hydrothermal manganese deposits.The Central Asian ore belt mostly belongs to sedimentary modified manganese deposits,and South Asian ore belt mostly belongs to hydrothermal manganese deposits.Gutongjing group of Changcheng system in the area is the important manganese bearing rock series,among which the marble of the Dahuoluoshan Formation of the Jixian system has higher manganese content.The manganese bearing strata are composed of sand shale,shale mixed with manganese bearing limestone,manganese bearing siliceous rocks and other lithological combinations.In studying and dividing the mineralization belt into different tectonic magmatic and sedimentary mineralization series during the Jinning period,Caledonian period,Hualixi period,and Indosinian Yanshan period,a mineralization model for the Kuquan-Yushishan-Dahongshan-Mazongshan manganese ore belt was established in providing relevant references for the exploration of mineral deposits in the region.
作者
王婷婷
张六虎
李明
WANG Tingting;ZHANG Liuhu;LI Ming(Henan Provincial Nuclear Technology Application Center,Zhengzhou,Henan 450000,China)
出处
《中国锰业》
2024年第2期67-71,共5页
China Manganese Industry
关键词
北山
马鬃山
锰矿
地质特征
成矿规律
Beishan
Mazongshan
Manganese ore
Geological features
Metallogenic regularity
作者简介
王婷婷(1983-),女,河南开封人,工程师,主要从事地质矿产资源勘查工作。
