铜矿带 meaning in Chinese

copper belt

Preliminary discussion on genesis of hemushan iron ore - deposit
号铁铜矿带的矿床成因探析
K - ar age of an illite from alteration rock in the contact zone around lianhuashan porphyry is 38 . 6ma . with referencing to the main metallogenic period of yulong copper metallogenic zone and of ailaoshan gold metallogenic zone , it is suggested that the time of formation of deposits in the district studied is probably in a period of time from 38 . 6ma at earliest to 20ma at latest . this time is equivalent to the origination time of two important tectonic events , i . e . , lanping movement and the turning point when ailaoshan - red river fault turned from sinisteral into dextral
获得了莲花山岩体周围接触带蚀变岩中伊利石k - ar年龄38 . 6ma ，参考玉龙铜矿带和哀牢山金矿带的主要成矿期(分别为30ma左右及26ma ) ，厘定本矿集区成矿年龄下限为38 . 6ma ，上限为20ma ，与两次重要的构造事件?兰坪运动的起始时间及哀牢山?红河断裂由左旋转为右旋的时间相当。