CAJ | 학술논문

青海东昆仑地区位于秦—祁—昆古陆边缘深断裂成矿构造带西端.区内大地构造演化先后经历了4次较大规模的拉伸与闭合过程,以昆北、昆中和昆南三大断裂为界分为祁漫塔格晚元古—早古生代叠加裂陷带(Ⅰ)、东昆仑古生代岛弧带(Ⅱ)和古生代消减杂岩带(Ⅲ)3个三级大地构造单元.在对典型矿床地质特征及前人资料系统分析的基础上,提出了造山晚期斑岩型+矽卡岩型铜多金属矿床、造山晚期斑岩型铜多金属矿床、晚元古代热水喷流沉积并经岩浆叠加改造富集的铜金多金属矿床3种重点寻找的铜矿床类型.根据区域总体成矿规律,优选出了7处铜矿找矿靶区,并分析了其找矿前景,认为雪山峰斑岩型铜矿靶区和东大滩斑岩与喷流沉积复合型铜矿靶区找矿前景最好.
청해동곤륜지구위우진—기—곤고륙변연심단렬성광구조대서단.구내대지구조연화선후경력료4차교대규모적랍신여폐합과정,이곤북、곤중화곤남삼대단렬위계분위기만탑격만원고—조고생대첩가렬함대(Ⅰ)、동곤륜고생대도호대(Ⅱ)화고생대소감잡암대(Ⅲ)3개삼급대지구조단원.재대전형광상지질특정급전인자료계통분석적기출상,제출료조산만기반암형+석잡암형동다금속광상、조산만기반암형동다금속광상、만원고대열수분류침적병경암장첩가개조부집적동금다금속광상3충중점심조적동광상류형.근거구역총체성광규률,우선출료7처동광조광파구,병분석료기조광전경,인위설산봉반암형동광파구화동대탄반암여분류침적복합형동광파구조광전경최호.
Eastern Kunlun, Qinghai Province, China, is located in the west of Qing?Qi?Kun Old Land Edge Deep Fracture Metallogenic Tectonic Belt. The tectonic in Eastern Kunlun went through four large-scale stretching and closing processes, and three third tectonic units formed with Northern Kunlun Fault, Middle Kunlun Fault and Southern Kunlun Fault as boundary, are Qimantage Superimposed Rift Zone in late Proterozoic—early Paleozoic (Ⅰ), Eastern Kunlun Island-arc Zone in Paleozoic (Ⅱ) and Abatement Complex Zone in Paleozoic (Ⅲ). Based on study for geological characteristics of typical deposit and predecessors’ material in the Eastern Kunlun, three key copper deposit types for prospecting, were put forward, which are namely porphyry+skarn type Cu polymetallic deposits in the late of orogenic, porphyry type Cu polymetallic deposits in the late of orogenic and copper gold and polymetallic deposits of exhalative sedimentary and superimposed on the transformation of the enrichment by magma in the late Proterozoic. Seven targets for prospecting copper deposits were chosen and the prospecting outlook was analyzed according to the regional metallogenic regularity, and it was pointed out that Xueshanfeng Target of porphyry copper deposit and Dongdatan Target of compound type copper deposit of porphyry and SEDEX have the best prospecting outlook.