投稿时间：2022-03-08
修订日期：2022-08-03
网络发布日期：2022-11-08
中文摘要:柴北缘成矿带是青海省仅次于东昆仑成矿单元的矿产资源战略性勘查接续地，文章以2014年开展的“中国矿产地质志·青海卷”项目为依托，基于全国Ⅲ级成矿区带的划分，结合柴北缘地质构造演化与成矿特点分析，提出了柴北缘成矿带5个Ⅳ级成矿亚带和5个Ⅴ级成矿区的划定方案；重点概述了金、铅、锌、煤、石棉、石灰岩、硼等重要矿种的主要矿床类型及成矿特征，并总结了时空分布规律，认为柴北缘重要矿种主要属于岩浆作用矿床与沉积作用矿床，主要成矿期为早古生代和中生代，次为晚古生代和第四纪。同时，通过矿产地质志的编撰，从区域地质演化的角度探讨了构造对成矿的约束，认为不同的构造环境控制不同的矿床类型和不同矿种的矿床，其中，滩间山岩浆弧产出以岩浆热液型青龙沟式金矿床和海相火山岩型锡铁山式铅锌矿床为代表，而柴北缘蛇绿混杂带则产出与印支期中酸性侵入岩有关的接触交代型多金属矿为特点；另外提出了柴北缘金矿迥异于典型造山型金矿的新认识，厘清该地区金成矿作用的构造环境、成矿期次及华力西期酸性岩浆含矿性是今后的主要研究方向，并且从地球化学元素组合的角度研究发现，柴北缘地区金矿大多处于中浅剥蚀程度，深部空间找矿潜力较大。
Abstract:The metallogenic belt in the northern margin of the Qaidam basin is the strategic exploration area of mineral resources next only to the East Kunlun metallogenic unit in Qinghai Province, based on the project "Annals of Geology of Mineral Resources of China·Qinghai volume" carried out in 2014, according to the division of grade Ⅲ metallogenic belts in China, and combined with the geological structure evolution and metallogenic characteristics of the northern margin of Qaidam basin, the paper puts forward the delineation scheme of five grade Ⅳ metallogenic subbelts and five grade Ⅴ metallogenic areas in the northern margin of the Qaidam basin.The main deposit types and metallogenic characteristics of gold, lead, zinc, coal, asbestos, limestone, boron and other important minerals are summarized, and their temporal and spatial distribution are discussed. It is consi-dered that the important minerals in the northern margin of the Qaidam basin mainly belong to magmatic and sedimentary deposits, and the main metallogenic periods are early Paleozoic and Mesozoic, secondly late Paleozoic and Quaternary. At the same time, from the perspective of regional geological evolution, the constraints of tecto-nics on mineralization are discussed. It is considered that different tectonic environments control different types of deposits and different types of minerals. Among them, the Tanjianshan magmatic arc is represented by magmatic hydrothermal Qinglonggou type gold deposit and marine volcanic Xitieshan type lead-zinc deposit. The Ophiolitic menlange zone in the northern margin of the Qaidam basin is characterized by contact metasomatic polymetallic deposits related to Indosinian intermediate-acid intrusive rocks;in addition, it is put forward that the gold deposits in the northern margin of the Qaidam basin are different from typical orogenic gold deposits. Clarifying the tectonic environment, metallogenic stages and variscan acid magmatic activity related gold mineralization in this area are the main research direction in the future; from the perspective of geochemical element assemblage, it is found that most gold deposits in the northern margin of the Qaidam basin are in medium and shallow denudation degree, and the deep part has great prospecting space potential.
keywords:geology ore deposit type important mineral resources metallogenic belt metallogenic regularity metallogenic cycle northern margin of the Qaidam basin
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基金项目:本文得到中国矿产地质志项目（编号：DD20221695、DD20190379、DD20160346）和青海学者专项（编号：QHS201802）联合资助
引用文本：
王进寿,潘彤,薛万文,李鹏,安永尉,田永革,雷晓清,余福承.2022.青海省柴北缘成矿带区域成矿规律综述[J].矿床地质,41(5):917~938WANG JinShou,PAN Tong,XUE WanWen,LI Peng,AN YongWei,TIAN YongGe,LEI XiaoQing,YU FuCheng.2022.A summary regional metallogenic regularity of northern Qaidam metallogenic belt in Qinghai Province[J].Mineral Deposits41(5):917~938
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