甘肃省徽县嘉陵镇—两当云屏寺地区金矿地质特征及找矿方向

GEOLOGICAL CHARACTERISTICS AND ORE-SEARCHING DIRECTIONS OF GOLD DEPOSITS IN JIALING TOWN(HUIXIAN COUNTY)-YUNPING TEMPLE(LIANGDANG COUNTY) DISTRICT,GANSU PROVINCE

甘肃徽县嘉陵镇—两当云屏寺地区位于南秦岭EW向断裂构造发育区,出露志留纪—三叠纪地层和印支期中酸性岩浆岩。区内金矿化赋存于泥盆系和石炭系中,构成北、中、南3条金矿化带,金矿床(点)定位于EW向断裂和印支期岩枝(株)内外接触带中,断裂构造与岩枝(株)是主要控制因素。今后金矿勘查工作以泥盆系和石炭系为重点找金层位,古湾梁—通天坪—黄圪塔断裂和印支期岩枝(株)内外接触带为重点勘查靶区。

Jialing Town-Yunping Temple area is situated in an EW fault-developed area where Silurian-Triassic strata and Indosinian intermediate-acidic magmatic rocks are exposed.Gold mineralization in the area occurs in Devonian and Carboniferous Systems including three Au mineralization belts,that is the north,middle and south belts.Au deposits or occurrences are located in the inner and outer contact zones of Indosinian apophyses(stocks) and EW faults.The faults and the apophyses(stocks) are main ore-control factors.Devonian and Carboniferous Systems are target horizons and Guwanliang-Tongtianping-Huanggeda fault is the target structure for further Au exploration in the district.