CAJ | 학술논문

白云鄂博北部的白音敖包地区大地构造位置跨属华北板块北缘和中亚造山带，是一个多性质动力系统转换地带。高背景 Au、Ag、Cu元素地球化学异常集中分布，发现了赛乌素、比鲁特、哈沙图、西皮、阿拉格敖包等多个成型金矿床，显示为一金矿矿集区。元素地球化学特征显示金可能来自地幔深源并与沉积地层有关；热液成矿温度在140~300℃之间；矿化类型具有多样性，成矿流体具有多源性，成矿时代具有多期性；矿床成因为热水喷流沉积-热液叠加改造复合型。矿集区经历了中元古代被动陆缘裂谷-热水沉积金成矿系统、早古生代活动陆缘的俯冲-沉积/造山金成矿系统、晚二叠世-三叠纪活动陆缘的碰撞-造山金成矿系统、燕山期构造体制转换-热液叠加金成矿系统、新生代表生变化金成矿系统等5个次级分支系统的顺序演化和叠加。
백운악박북부적백음오포지구대지구조위치과속화북판괴북연화중아조산대，시일개다성질동력계통전환지대。고배경 Au、Ag、Cu원소지구화학이상집중분포，발현료새오소、비로특、합사도、서피、아랍격오포등다개성형금광상，현시위일금광광집구。원소지구화학특정현시금가능래자지만심원병여침적지층유관；열액성광온도재140~300℃지간；광화류형구유다양성，성광류체구유다원성，성광시대구유다기성；광상성인위열수분류침적-열액첩가개조복합형。광집구경력료중원고대피동륙연렬곡-열수침적금성광계통、조고생대활동륙연적부충-침적/조산금성광계통、만이첩세-삼첩기활동륙연적팽당-조산금성광계통、연산기구조체제전환-열액첩가금성광계통、신생대표생변화금성광계통등5개차급분지계통적순서연화화첩가。
Located to the north of the Bayan Obo, tectonically, between the northern margin of the North China platform and Central Asian Orogenic Belt, the Baiyin Obo area is a transformation area of different dynamic systems. Consensus with its high background of Au, Ag, Cu, many gold deposits, such as Saiwusu, Bilute, Hashatu, Xipi, Alag Obo, have been found in the area. Element geochemical characteristics show that metallogenic materials came from deep mantle sources with contributions from the sedimentary strata. Hydrothermal mineralization temperature varied from 140 to 300 ℃. The mineralization types are of diverse, the ore-forming fluids being of multi-source, and the mineralization era being of multi-period. It is considered that the genesis of the deposits is composite type associated with hydrothermal exhalative sedimentary and hydrothermal superposition. The area has undergone the evolution and superposition of five sub-branch systems: the passive continental margin rift-hydrothermal sediment Au metallogenic system in Proterozoic, the active continental margin subduction-sediment/orogeny Au metallogenic system in Early Paleozoic, the active continental margin collision-orogeny Au metallogenic system in Late Permian-Triassic, the tectonic regimes transformation-hydrothermal superposition Au metallogenic system in Yanshanian and the supergene changes Au metallogenic system in Cenozoic era.