摘要
由于本省内构造—岩浆活动十分复杂,加之区内因森林及植被覆盖而基岩露头欠佳,长期以来认为本区它属于华力西晚期褶皱带,故印支期花岗没有得到确认。1985～1987年编著黑龙江省区域地质志过程中,在花岗岩及地层研究上取得一些新的进展,获得一批印支期的Rb—Sr等时线年龄(186～231Ma)数据。这时才认识到印支期岩浆活动广泛发育及其在地质发展历史中的重要意义。本文对该期岩浆岩的时代依据、地质特征、成因类型及其构造意义等,作了简要的论述。
The long-continued tectouic rejuvenation and polyphase teetono-magmatic activity have brought difficulty in gaining a knowledge of the tectonics of Heilongjiang Province. For many years, it was eonsidered that the granite belonged to the Late Variscan fold belt. Thus people failed to recognize Indosinian granite. In 1985—1987, large numbers of Rb-Sr isoehron age values (186—231 Ma) were obtained, a new advances were achieved in the study of stratigraphy. Then people came to realize that the Indosinian teetono-magmatic rocks do exist in the province. The granitoids formed in this epoch are distributed throughout the province and mostly occur as large or huge batholiths. In this paper the granitoids in the province are assigned to two Indosinian granite belts which lie in the eastern and western parts respectively.
出处
《中国区域地质》
CSCD
1991年第1期25-27,9,共4页
Regional Geology of China
