摘要
黑龙江二股—丰林二长花岗岩体位于小兴安岭东北部,是伊春—延寿岩浆构造带的重要组成部分。二长花岗样品的SiO_2、Al_2O_3、Na_2O＋K_2O质量分数分别为67.73%~74.85%、67.73%~74.85%、7.19%~9.06%,为准铝质-弱过铝质、高钾钙碱性岩石系列,相对富集轻稀土元素、富集大离子亲石元素（Rb、K、Ba）和化学性质活泼的不相容元素（U、Th）,亏损重稀土元素、高场强元素（Nb、Nd、P、Sr、Ti）和重稀土元素（如Y、Yb、Lu）,形成于与太平洋板块俯冲作用相关的火山弧构造环境。
The Ergu-Fenglin monzonitic granite mass, located in the northeast area of Xiaohingganling, is an important part of the Yichun-Yanshou magma belt. Studies of petrogeochemistry indicate that the monzonitic granites have high silica（SiO_2=67.73%-74.85%） and alumina（Al_2O_3=67.73%-74.85%） contents, and medium alkali（Na_2O＋K_2O=7.19%-9.06%）, and they belong to aluminum- peraluminous high potassium calc alkali granite. The monzonitic granites are enriched in LILE（such as Rb,K,Ba）, mobile incompatible elements（such as U, Th）, relatively depleted in HFSE（such as Nb, Nd, P, Sr, Ti） and heavy rare earth elements（HREE, such as Y,Yb,Lu）. The monzonitic granites were formed in volcanic arc environment related to the Pacific plate subduction.
作者
李慧
江峰
张国宾
LI Hui JIANG Feng ZHANG Guo-bin(Team 703, Nonferrous Metals of Geology and Mineral Investigation Bureau of Heilongjiang Province, Acheng 150300 Heilongjiang, China Department of Geology, Liaoning Technical University, Fuxin 123000, Liaoning, China)
出处
《吉林地质》
2016年第3期19-26,共8页
Jilin Geology
关键词
岩石地球化学
地质特征
花岗岩
二股—丰林
黑龙江
Petrogeochemistry
geological features
granite
Ergu-Fenglinarea
Heilongjiang Province
