中亚造山带南缘马鬃山一带锰(铁)成矿带地质特征及成矿规律研究
Geological Characteristics and Metallogenic Regularity of the Manganese(iron)Metallogenic Belt in Mazong Mountain Area,Southern Margin of Central Asia Orogenic Belt
王婷婷 1张六虎 1李明1
作者信息
- 1. 河南省核技术应用中心,河南 郑州 450000
- 折叠
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.
Abstract
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.
关键词
北山/马鬃山/锰矿/地质特征/成矿规律Key words
Beishan/Mazongshan/Manganese ore/Geological features/Metallogenic regularity引用本文复制引用
出版年
2024
NETL
NSTL
万方数据