摘要
中生代时期由于受太平洋板块俯冲作用的影响,大兴安岭地区产生强烈的火山-次火山作用.以中生代火山断陷区为构造背景,火山断陷区的边部与断隆区交接部位形成了大量的铅锌多金属矿化.矿床基本受一套火山岩-潜火山超浅成侵入体—浅成侵入体控制,铅锌矿化作用基本与火山-次火山作用同时进行,略有滞后,并受火山-次火山活动制约.大兴安岭主要有6个有成矿潜力的铅锌成矿带:(1)得尔布干铅锌(金、银)成矿带;(2)谢尔塔拉-阿尔山铅锌多金属成矿带;(3)乌兰浩特-林东铅锌多金属成矿带;(4)林西-黄合吐铅锌多金属成矿带;(5)锡林浩特-朝不楞铅锌多金属成矿带;(6)小东沟-翁牛特旗铅锌多金属成矿带.共有3种铅锌矿化形式.
Due to the subduction of the Pacific plate in Mesozoic Era, severe volcanic-subvolcanic activities took place in the Daxingauling region. On the tectonic background of Mesozoic volcanic fault depression, amounts of Pb-Zn polymetal mineralization occur on the margin of the fault depression and the in the connecting belt between depression and uplift. The deposits are controlled by a series of volcanic-subvolcanic hypabyssal intrusive. The mineralization is formed nearly the same as or slightly later than the volcanic-subvolcanic activities. Six potential Pb-Zn metallogenic belts are recognized in the Daxinganling region, i.e. 1 ） Derbugan Pb-Zn（-Au-Ag） metallogenic belt; 2） Xiertala-Arshan Pb-Zn polymetal metallogenic belt; 3） Ulanhot-Lindong Pb-Zn polymetal metallogenic belt; 4） Linxi-Huanghetu Pb-Zn polymetal metallogenic belt; 5） Xilinhot-Chaobuleng Pb-Zn polymetal metallogenic belt; and 6） Xiaodonggou-Ongniud Pb-Zn polymetal metallogenic belt. The deposits can be assigned into three metallogenic types.
出处
《地质与资源》
CAS
2012年第1期114-121,共8页
Geology and Resources
基金
中国地质调查局"大兴安岭成矿带铜多金属矿勘查选区研究"项目(1212010631506)资助
关键词
大兴安岭
中生代
火山-次火山
铅锌矿
Daxinganling
Mesozoic
volcanic-subvolcanic rock
lead-zinc deposit
