商丹板块对接带韧性剪切带型金矿地质特征及找矿标志

商丹板块对接带金矿地处华北板块与扬子板块的结合地带，已发现大型金矿床2处，中小型矿床（点）20余处。它们分属金牛坪一库峪金多金属成矿带和沙梁子-道回峪贵金属成矿带。区内新圈定的金矿体70多条，在空间上，分布于东西长122km，南北宽8～16km，标高2050-900m的范围内；矿体集中分布于金牛坪～涝峪、银硐沟、库峪、沙梁子-柳林沟、道回峪等五个地区。成矿主要受构造、地层、岩浆活动、变质作用等因素的控制。初步认为区内金矿总体上属与混合岩化-变质热液及渗滤热卤水有关的韧性剪切带型金矿，并指出了本区金矿的找矿标志。

GEOLOGICAL FEATURES AND PROSPECTING INDICATORS OF GOLD ORES IN THE DOCKING DUCTILE-SHEARING ZONE BETWEEN SHANGNAN AND DANFENG PLATES

The docking zone between Shangnan and Danfeng plates lies in the juncture zone of the North China Plate and the Yangtze Plate, in which two large-scale gold deposits and over 20 medium-to small-sized gold deposits （occurrences） have been discovered to be confined in the Jinniuping-Kuyu gold polymetallic ore zone and the Shaliangzi-Daohuiyu precious met- allization zone. Over 70 new discovered gold bodies are distributed in a space at a length 122km from east to west and a width from 8 to 16km, and an elevation ranging between 2, 050m and 900m. Gold mineralized bodies are mainly concentrated in Jinniuping-Laoyu, Yin- tonggou, Kuyu, Shaliangzi-Liulingou and Daohuiyu areas. Gold mineralization is closely related to structures, stratigraphy, magmatic movement and metamorphism. It is preliminarily concluded that gold mineralization in this area should belong to the gold deposits occurring in a ductile shearing zone, which are relevant to migmatization-metamorphic thermal solution and percolation hot brine metallogenesis.