小秦岭东闯金矿区花岗岩浆活动的性质

东闯金矿区中生开岩交活动的特征是小秦岭地区这一时期岩浆活动的缩影。从钾长花岗岩墙－文峪第一次侵入体－文峪第二次侵入体，岩石向相对基性度增高方向变化，可能暗示区域岩石圈的热－物质调整从印支期至燕山早期持续增强。

NATURES OF GRANITIC MAGMA AND IT'S RELATION WITH GOLD MINERALIZATION IN DONGCHUANG GOLD FIELD,XIAOQINLING

The nature of magmatic activity in Dongchuang gold field presents that in Xiaoqinling.From moyite dike to Wenyu first granitic intrusion and to Wenyu second granitic intrusion,the extent of basification in granites increases gradually and it implies that heat matter adjustment of the regional lithosphere increased gradually during Mesozoic Period. This heat matter adjustment is the results of uplift activity of Qinling Orogenic belt after collision between North China and Yangtze blocks in later Paleozoic to early Mesozoic and reflected the extensional process of orogenic lithosphere.In Xiaoqinling gold area ore forming fluids mainly consist of evolved meteoric waters and this adjustment is favourable to the formation,cycle and deposition of ore bearing fluids.