Geochronology studies of the Early Paleozoic Honghai massive sulfide deposits and its geological significance in Kalatage area, eastern Tianshan Mountain.
东天山卡拉塔格早古生代红海块状硫化物矿床精确定年及其地质意义

The Honghai massive sulfide Cu-Zn deposit found in the Kalatage volcanic and volcanic-clastics belt in the eastern Tianshan Mountains. The drill cores studies indicate this volcanic and volcanic-clastics buildings are composed by two group of stratums: (1) overlain layers made up of intermediate and felsic volcanic rocks, volcanic breccias, tuff and interlayer tuff sandstone; (2) host-layers mainly composed of massive Cu-Zn sulfide Cu-Zn ore-body, basics, intermediate and felsic volcanic breccias, tuff breccias, tuff and sedimentary tuff. The sample for zircon U-Pb dating was collected at the button of overlain layers, and the sample for K-Ar dating was collected in the intensively altered mineralization zone. Zircon U-Pb dating get the crystallization age is 416.3±5.9Ma for the felsic volcanic rocks, which limit mineralization age. The K-Ar age is 424±7Ma for the sericitized rocks, which recorded the latest mineralization stage. The geochronology studies indicates the Honghai Cu-Zn deposit is an Early Paleozoic deposits, constrict the age of the lower volcanics in the Kalatage area,and also extend the prospecting potential space of the Kalatage and the eastern Tianshan Mountain areas.