CAJ | 학술논문

新疆青河县哈腊苏地处南蒙古铜矿带的西延部分,是铜矿勘查与研究的重点和热点地区.文章以近年发现的玉勒肯哈腊苏铜矿床为主要研究对象,对矿区内铜矿化的斑状花岗岩和石英二长斑岩进行了锆石U-Pb法精确定年.研究表明,这2个主要矿化岩体先后形成于中泥盆世和早二叠世,两期岩浆活动形成了重要的斑岩型铜矿化.玉勒肯哈腊苏地区主期斑岩型矿化发生在中泥盆世,早二叠世有斑岩型矿化复合,中晚三叠纪有明显的构造-岩浆-热液引起的矿化-蚀变叠加,复合叠加铜矿化过程有确切的年代学纪录.该研究为认识铜矿成因和明确勘查方向提供了新的事实依据.
신강청하현합석소지처남몽고동광대적서연부분,시동광감사여연구적중점화열점지구.문장이근년발현적옥륵긍합석소동광상위주요연구대상,대광구내동광화적반상화강암화석영이장반암진행료고석U-Pb법정학정년.연구표명,저2개주요광화암체선후형성우중니분세화조이첩세,량기암장활동형성료중요적반암형동광화.옥륵긍합석소지구주기반암형광화발생재중니분세,조이첩세유반암형광화복합,중만삼첩기유명현적구조-암장-열액인기적광화-식변첩가,복합첩가동광화과정유학절적년대학기록.해연구위인식동광성인화명학감사방향제공료신적사실의거.
Located in the western part of the southern Mongolia copper belt, Halasu area in Qinghe County of Xinjiang is an important and interesting area for copper ore survey and research. Yulekenhalasu is a newly found copper deposit in this area. The authors dated the zircons from the mineralized porphyritic granite and quartz-monzonite porphyry in this deposit by using the LA-ICP-MS U-Pb dating method. The results show that the two ore-bearing intrusions were emplaced in Middle Devonian and Early Permian, respectively. Both of these two stages of magmatism produced porphyry-type copper mineralization, with the former intrusion in Middle Devonian being the main ore-forming stage, whereas the latter one in Early Permian resulting in complex mineralization. There also occurred the superimposition of mineralization-alteration caused by tectonic-magmatic-hydrothermal activities in Middle-Late Triassic. Complex and superimposed copper mineralizations have been well dated. This paper provides some new facts for understanding the genesis and exploration direction of copper ore deposits in this area.