淅川—西峡地区金矿床控矿因素及找矿方向

淅川—西峡地区构造复杂 ,断裂发育 ,多期次岩浆活动强烈 ,为金矿形成创造了良好的地质条件。通过对区内地层、构造、岩浆岩与金矿化关系的探讨及地球化学测量成果的总结 ,认为陡岭群是本区的矿源层 ,为金矿的形成提供了物质来源。区内石英脉型金矿主要受北东向次级断裂控制 ,破碎带蚀变岩型金矿受北西西向次级断裂控制 ,斑岩—爆破角砾岩型金矿与燕山期浅成—超浅成侵入 (爆破 )花岗斑岩关系密切。据此 ,提出三个成矿远景区

THE ORE CONTROL FACTORS AND PROSPECTING ORIENTATION OF GOLD DEPOSITS IN XICHUAN-XIXIA AREAS OF HENAN PROVINCE

Xichuan-Xixia areas in Henan Province have a good geological conditions formed gold deposits owing to having complex structure, developed fault and multiphase and intense magmatic activities. The author thinks that the Douling Group is source bed of this area which supplied gold ore forming materials by studying geochemical survey and discussing relations among strata, structures, magma and gold mineralization. The gold deposits of quartz vein type and tectonic altered rock type are controlled respectively by NE and NWW second faults, the porphyry explosion breccia type gold deposits are tightly related with the Yanshanian shallow or ultra shallow intrusive (explosive) granite porphyry. On these grounds, the author has suggested three metallogenic prospective provinces.