CAJ | 학술논문

沉积岩型层状铜矿床是全球第二重要的铜矿类型，重要性仅次于斑岩型铜矿床。并且，它们常伴生一定规模的钴、银、铅、锌、铀、金、铂族元素等其他金属资源。其矿体通常呈层状、似层状发育在沉积盆地的还原性岩石或地层中。大多数沉积岩型层状铜矿床形成于围岩的成岩作用或者成岩晚阶段，但也经常会受到成矿后变质作用、变形作用的改造，发生成矿物质的活化—再沉淀。原生成矿作用的发生通常要经历成矿流体（低温、中—高盐度、含硫）在矿体下盘的红层中持续、长期的循环，萃取铜等金属元素，随后沿着盆地边界断裂迁移至盆地还原性地层中或者被迁移的还原性物质（石油、天然气）还原而发生铜等成矿物质的沉淀。超大规模的层状铜矿化可能对应地球地质历史时期特殊的地质事件和地质条件，其中包括超大陆裂解、炎热干旱的古气候、大氧化事件以及冰期和富镁的海洋等。
침적암형층상동광상시전구제이중요적동광류형，중요성부차우반암형동광상。병차，타문상반생일정규모적고、은、연、자、유、금、박족원소등기타금속자원。기광체통상정층상、사층상발육재침적분지적환원성암석혹지층중。대다수침적암형층상동광상형성우위암적성암작용혹자성암만계단，단야경상회수도성광후변질작용、변형작용적개조，발생성광물질적활화—재침정。원생성광작용적발생통상요경력성광류체（저온、중—고염도、함류）재광체하반적홍층중지속、장기적순배，췌취동등금속원소，수후연착분지변계단렬천이지분지환원성지층중혹자피천이적환원성물질（석유、천연기）환원이발생동등성광물질적침정。초대규모적층상동광화가능대응지구지질역사시기특수적지질사건화지질조건，기중포괄초대륙렬해、염열간한적고기후、대양화사건이급빙기화부미적해양등。
Sediment-hosted Stratiform Copper Deposits (SSC ) are one of the most important copper suppliers around the world and are also significant sources for Co,Ag,Pb,Zn,U,Ag and PGE.They normally occur as sulfide disseminates in restricted layers within a sedimentary sequence but do not necessarily follow sedimentary bedding.Most SSCs are formed during or at the late stage of host rock lithification (diagenesis ) by low temperature,intermediate to high salinity and sulfur-rich basinal fluids which circulated in the footwall red bed sequences so as to acquire ore-forming elements such as Cu and S.Metal (copper)precipitation is primarily induced by chemical reduction of the upward-migrating basinal fluids by in-situ reductant in the hanging wall sediments or mobile hydrocarbon within the red beds.Some of them may have been altered and remobilized during regional deformation or metamorphism later on.Supergiant sediment-hosted copper mineralization may have been facilitated by global events such as supercontinent breakup,hot and arid paleoclimate,Great Oxidation Event, glacial events and magnesium-rich ocean waters.