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《地球科学与环境学报》[ISSN:1672-6561/CN:61-1423/P]

卷:

第32卷

期数:

2010年第04期

页码:

338-343

栏目:

基础地质与矿产地质

出版日期:

2010-12-20

文章信息/Info

Title:

Geochemical Characteristics and Ore-bearing Potential in Zha'ertaishan Group, Inner Mongolia

文章编号:

1672-6561(2010)04-0338-06

作者:

苏宏伟¹; 康明²; 刘还林¹; 廖蕾¹; 梁社明³

(1.内蒙古自治区地质调查院,内蒙古 呼和浩特 010020; 2.长安大学 地球科学与资源学院, 陕西 西安 710054; 3.陕西省合阳县环境保护局,陕西 合阳 715300)

Author(s):

SU Hong-wei¹;  KANG Ming²;  LIU Huan-lin¹;  LIAO Lei¹;  LIANG She-ming³

(1. Geological Survey Institute of Inner Mongolia, Hohhot 010020, Inner Mongolia, China; 2.School of Earth Sciences and Resources, Chang'an University, Xi'an 710054, Shaanxi, China; 3. Bureau of Environmental Protection of Heyang County, Heyang 715300, Shaanxi, China)

关键词:

地球化学; 含矿性; 地层; 渣尔泰山群; 内蒙古

Keywords:

geochemistry;  ore-bearing formation;  stratum;  Zha'ertaishan Group;  Inner Mongolia

分类号:

P595

DOI:

-

文献标志码:

A

摘要:

在充分研究已有资料的基础上,通过野外实地调研,以内蒙古中西部渣尔泰山地区为主要研究对象,对渣尔泰山群地层进行了划分,并探讨了该地层地球化学特征,最后就该地层含矿性进行了评价。结果表明:中元古界渣尔泰山群为一套浅变质岩系,属裂谷系中的碎屑岩、炭质页岩、粉砂岩和碳酸盐岩建造,自下而上分为书记沟组、增隆昌组、阿古鲁沟组和刘鸿湾组,主要含矿层为阿古鲁沟组;渣尔泰山群沉积环境呈现由陆相→正常海相→半封闭海相或次深海相→滨海相的正常海进海退序列变化特征;渣尔泰山群地层在纵向上自下而上表现为亲碎屑元素组合→亲碳酸盐元素组合→亲铁、亲硫元素组合→亲碳酸盐、亲碎屑岩的混合组合;岩石组分与成矿元素有显著相关性,泥质、钙镁质岩富含铅、锌及硫铁,高硅质岩石富含铜,有机碳含量往往与矿层的规模、质量成正消长关系;不同的构造演化阶段和沉积环境致使元素分布不均匀,体现在含矿性在东西走向的规律性变化,即东部甲生盘—山片沟矿床贫铜富锌,少伴生元素,而西部狼山地区铜、铅、锌共生,贫铅锌富铜,伴生元素较多。

Abstract:

Based on the current data and field research,Zha'ertaishan in the midwest of Inner Mongolia was taken as research object; Zha'ertaishan Group was divided; the geochemical characteristics were discussed; and the ore-bearing potential was evaluated. The result showed that Mesoproterozoic Zha'ertaishan Group, as a set of epimetamorphic rock series, consisted of clasolite, macker, siltite and carbonatite in a rift system, and was divided into Shujigou, Zenglongchang, Agulugou and Liuhongwan Formations from bottom to top; depositional environment of Zha'ertaishan Group showed the characteristic of normal transgression and regression sequence “continental facies→normal marine facies→semi-enclosed sea facies or bathyal facies→littoral facies”; Zha'ertaishan Group showed the element combinations “pro-scrap→pro-carbonate→siderophile and sulphophile→pro-scrap and pro-carbonate mixed” from bottom to top in the longitudinal; the correlation of rock constituents and metallogenic element was significant; argillaceous, calcareous and mafic rocks were rich in Pb, Zn and S-Fe; siliceous rock was rich in Cu, and the relationship between the content of organic carbon and the scale and quality of mineral deposit was positive eat and flow; the different stages of tectonic and the evolution of sedimentary environment caused the uneven distribution of elements, and it showed the change of ore-bearing potential from east to west, and particularly, Jiashengpan-Shanpiangou zinc poly-metallic deposit was poor in Cu, rich in Zn and a little accompaniment elements in the eastern part, several deposits in Langshan Area showed symbiotic Cu, Pb and Zn, rich in Cu, poor in Pb and Zn and many accompaniment elements in the western part.

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备注/Memo

备注/Memo:

收稿日期:2010-01-05
基金项目: 内蒙古自治区地质矿产综合研究项目(KD68)
作者简介: 苏宏伟(1966-),男,内蒙古呼和浩特人,高级工程师,从事地质调查研究。E-mail:suhongweinm@163.com

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更新日期/Last Update: 2010-12-20