摘要
西秦岭一带广泛分布的酸性侵入岩具相似的岩石地球化学特征,在各类中酸性岩脉(株)发育地段基本均出现W、Sn、Mo、Bi、Be组合异常,这些与高温亲氧元素有关的元素组合异常与区内酸性侵入岩的分布特征具有吻合性好、异常浓集程度高、浓集中心明显的特征,异常的分布受控于岩体与区域断裂构造之共同影响,其最有利的岩体是区内广泛分布的印支期花岗岩体。
The acidic intrusive rocks distributed in western Qinling have similar geochemical characteristics. W,Sn,Mo,Bi,Be combined anomalies occurred in all kinds of acidic dike( strains) developed zone. These combination anomalies related to the high temperature oxygen-affinity elements have a good agreement with distribution characteristics of acidic intrusive rocks in the studied area with high degree of abnormal concentration,and obvious focus characteristics. Abnormal distribution is controlled by common influence of the rock mass and the regional fracture structure. The most favorable rock is widely distributed in the area of Indo-Chinese epoch granite rock mass.
出处
《甘肃冶金》
2015年第6期93-97,共5页
Gansu Metallurgy
关键词
酸性侵入岩
组合异常
地球化学特征
西秦岭
acidic intrusive rocks
combined anomalies
geochemical characteristics
western Qinling
