摘要
MVT型铅锌矿床是最重要的铅锌矿类型之一,近百年来人们在此类矿床地质和地球化学特征、成矿物质来源、成矿物质活化、运移和沉淀机制、成矿时代和成矿动力学等方面取得了许多重要成果,其中最重要的认识就是与油气相关的烃类流体在Pb-Zn等金属元素活化、迁移和沉淀成矿中起着非常重要的作用。在综合分析前陆盆地烃类流体与MVT型铅锌矿二者之间的成因关系的基础上,系统总结了世界范围内前陆盆地MVT型Pb-Zn矿床共同特征,总结了近年来前陆盆地MVT型铅锌矿烃类流体研究成果和进展,分析表明烃类流体以什么角色、如何参与MVT型铅锌矿成矿作用是目前研究的热点问题,有关烃类流体携带Pb-Zn等金属元素能力及其参与Pb-Zn沉淀成矿机制、前陆盆地构造演化背景下流体汇聚动力学,以及油气藏破坏与Pb-Zn成矿耦合关系等是未来有待深入探讨的重要科学问题。在矿床学和矿床地球化学研究基础上,应该发挥交叉学科特色优势和研究手段,从石油地质学角度出发,研究前陆盆地构造演化过程中烃类流体形成、演化与MVT型铅锌矿成矿过程之间的耦合关系,从有机流体角度切入,探讨MVT型铅锌矿成矿物质来源、成矿作用过程和成矿机制是新的研究趋势。
MVT Pb-Zn deposit(Mississippi Valley Type)is one of the most important types of lead-zinc mine.Many large oil and gas fields developed together with MVT type Pb-Zn ore in the foreland basin in the world.Hydrocarbon fluid associated with oil/gas has played a very important role in the mobilization,transportation and precipitation of metal elements of Pb-Zn.Several metallogenic models of MVT Pb-Zn deposit have been established based on the background of foreland basin structure of which hydrocarbon fluid participated in Pb-Zn mineralization,or acted as the role of reductant to precipitate in Pb-Zn minerals.The close connections between the MVT type Pb-Zn deposit and hydrocarbon fluid of oil/gas field in foreland basin is widely recognized by deposit scientists in the world.Currently geologists’attentions have been focused on the role of hydrocarbon fluid in the metallogenic characteristics of MVT Pb-Zn deposit formation,ability of mobilization and transportation of Pb-Zn elements and metallogenic mechanism of hydrocarbon fluid during tectonic evolution history.On the basis of geological and geochemical study of MVT Pb-Zn deposit,ideas and methods of petroleum geology and organic geochemistry should be used to study the coupling relationship of evolution process of hydrocarbon fluid and mineralization process of MVT Pb-Zn deposit.
作者
李荣西
毛景文
赵帮胜
陈宝赟
刘淑文
LI Rongxi;MAO Jingwen;ZHAO Bangsheng;CHEN Baoyun;LIU Shuwen(School of Earth Science and Resources,Chang'an University,Xi'an 710054,China;Key Laboratory of West China's Mineral Resources and Geological Engineering,Minstry of Education,Chang'an University,Xi'an 710054,China;Institute of Mineral Resources,Chinese Academy of Geological Sciences,Beijing 100037,China)
出处
《地球科学进展》
CAS
CSCD
北大核心
2021年第4期335-345,共11页
Advances in Earth Science
基金
国家自然科学基金项目“大巴山前陆构造纤维状方解石脉体成因机理及其油气地质意义研究”(编号:41772118)资助。
关键词
MVT型铅锌矿
烃类流体
成矿机制
前陆盆地
MVT Pb-Zn deposit
Hydrocarbon fluid
Metallogenic mechanism
Foreland basin
