this conversion process is preliminarily considered as a result of the long-term weathering and denudation caused in the course of rising of the late archaean crust.
这一转变过程初步认为是本区晚太古代地壳上升所引起的长期风化剥蚀作用的结果。
this type of graphite deposits were formend in the late archaean to early proterozoic.
鲁西晚太古代的侵入巖属无铕异常型,早元古代的侵入巖为负铕异常型;
the deformation characteristics of longquanguan dsz reflect the tectonic evolution of the late archaean collision orogenic belt in wutaishan area.
龙泉关韧性剪切带的变形特征反映了五台山晚太古代碰撞造山带的构造演化。
in the dabieshan area, the late archaean metamorphic rocks, here termed as the dabie group, are complexly deformed.
大别山区晚太古代大别群变质巖系,经历了复杂的变形过程。
unit two belongs to late archaean middle-low grade metamorphic rocks with the characteristics of granite -greenstone belt.
组合(2)是具花岗—绿巖带特征的晚太古代中、低级变质巖系。
the chondrite normalized ree distribution patterns show no eu anomalies in the late archaean intrusive rocks but show negative eu anomalies in the early proterozoic ones.
鲁西晚太古代的侵入巖属无铕异常型,早元古代的侵入巖为负铕异常型;