马来西亚沙捞越邦达、什兰江控矿角砾岩筒构造对比研究及其找矿意义

马来西亚沙捞越邦达、什兰江控矿角砾岩筒构造均为典型的浅成—半浅成角砾岩筒构造，角砾岩及控矿类型具有明显的垂向分带特点。邦达控矿角砾岩筒构造发育角砾岩筒上段的塌陷角砾岩，角砾岩筒剥蚀深度较浅，控制典型的高硫化型浅成低温金铜矿床，且其深部具有较大的找矿潜力。什兰江控矿角砾岩筒构造发育角砾岩筒下段的爆发角砾岩和中段的流化角砾岩，分别控制斑岩型金矿化和低硫化型浅成低温热液型金矿化，角砾岩筒剥蚀深度较大，对矿床的保存和找矿极为不利。

Comparative Study of Punda and Selanjan Ore-control Breccia Pipe Structure in Sarawak, Malaysia and Its Ore-prospecting Significance

Ore--control breccia pipe structure of Punda and Selanjan in Sarawak, Malaysia, is a typical hypabyssal breccia pipe structure. Breccias in hypabyssal breccia pipe and types of mineralization controlled by hypabyssal breccia pipe possess distinct vertical zonation. In Punda ore--control breccia pipe, the breccias are characteristic collapse breccia in the superficial segment or topside of the hypabyssal breccia pipe, indicating its denudation is superficial. Furthermore, types of mineralization controlled by the hypabyssal breccia pipe belong to high sulphidation epithermal deposit and have an excellent exploration prospect in the deep. In Selanjan ore--control breccia pipe, the breccias are characteristic explosive breccia at the bottom of the breccia pipe and rheonorphic breccia in the middle segment of the breccia pipe. At the same time, the types of mineralization controlled by explosive breccia and rheonorphic breccia are porphyry gold mineralization and low sulphidation epithermal mineralization respectively. Denudation is deep and harmful to the preservation and exploration of the gold deposit.