CAJ | 학술논문

黑龙江鸡东金场沟矿区岩浆岩主要为花岗闪长斑岩,岩石SiO_2含量为62.60%～64.18%,全碱(Na_2O+K_2O)含量为6.57%～7.45%,K_2O>Na_2O; MALI指数为4.48～6.68,ASI指数(铝饱和指数)为1.44～1.79>1.1,富磷(>0.2%),属镁质、碱性、(强)过铝质花岗岩,且岩浆分异程度较高(DI=71.71～76.92).该区的花岗闪长斑岩形成于碰撞后-造山晚期的构造环境,岩浆源区的物质可能主要来源于地壳物质,源岩可能是砂屑岩.
흑룡강계동금장구광구암장암주요위화강섬장반암,암석SiO_2함량위62.60%～64.18%,전감(Na_2O+K_2O)함량위6.57%～7.45%,K_2O>Na_2O; MALI지수위4.48～6.68,ASI지수(려포화지수)위1.44～1.79>1.1,부린(>0.2%),속미질、감성、(강)과려질화강암,차암장분이정도교고(DI=71.71～76.92).해구적화강섬장반암형성우팽당후-조산만기적구조배경,암장원구적물질가능주요래원우지각물질,원암가능시사설암.
The main magmatic rocks in Jinchanggou are granodiorite porphyry in category. The contents of the rocks are 62.60%～64.18% in SiO_2, 6.57%～7.45% in Na_2O+K_2O, with K_2O> Na_2O, 4.48～6.68 in the modified calc-alkali index(MALI), 1.44～1.79>1.1 for alumina saturation index (ASI), which shows P-riched(>0.2%) and belongs to magnesian, alkalin and peraluminium granite, and having a high differentiation degree(DI=71.71～76.92). The granodiorite porphyry formed in the tectonic setting of collision or late orogeny, and its source materials mainly sourced from the crust, and the source rock is most likely from the arenite.