摘要
邯邢地区燕山期侵入岩系的侵入活动发生在109～171Ma之间。它们可以划分成角闪橄辉岩系,角闪闪长岩系,二长岩系和正长岩系四个岩石系列。不同岩系的稀土元素特征表明,它们并不是由同源岩浆演化所成,每个岩系内部稀土元素丰度的变化受岩浆演化过程中分离结晶的矿物种类和数量所制约。角闪闪长岩中的稀土元素主要分配到角闪石中,而角闪二长岩和黑云辉石正长岩中的稀土元素,主要分配到其中的副矿物中。
The igneous activity of Yanshan stage in Han-Xing district occurred during 109～171Ma. The intrusive rocks can be divided into four series. They are Hb-O1-pyroxenite series, Hb-diorite series, monzonite series and syenite series. The REE data indicate that the diverse rock series are of independent origins. The limited intraseries crystal fractionation is responsible for the small differences in REE abundance. For Hb-diorite contents of REE in hornblende are determined. For Hb-monzonite and Bi-Cpx-syenite contents of REE in accessory minerals (apatite and sphene) are determined.
出处
《岩石学报》
SCIE
EI
CAS
CSCD
北大核心
1990年第2期43-50,共8页
Acta Petrologica Sinica
基金
高等学校博士学科点专项科学基金
关键词
侵入岩
稀土元素
燕山期
Hb-diorite
Monzonite
Syenite
Han-Xing district
