摘要
本文根据165个K-Ar年龄数据讨论了辽宁中部早元古代辽河群变质岩系K-Ar年龄的特征,并用73个有代表性的数据绘制了辽宁中部辽河群变质岩K-Ar年龄等值陶,进一步形象地说明了该区大地构造运动的规律,即辽东半岛北部在中元古代开始隆起,逐步向南推移,南部地区在复杂的升降运动中,较长时间处于地下深埋状态,直到古生代晚期至中生代早期才最后隆起,基本构成了辽东半岛的轮廓。
A K-Ar age contour map has been prepared from 165 K-Ar age data collected and analysed from the metamorphic series of Early Proterozoic Liaohe Group in central Li-aoning. It is demonstrated that the uplifting of the peninsular began in Middle Pro-terozoic and continued until Late Paleozoic (or Early Mesozoic) when the uplifting ex-panded gradually to the southern part of the peninsular, which had been deeply buried for a Longer time than the northern part, giving rise to the formation of the outline of the Liaodong Peninsular as we see at present day.
出处
《地球化学》
CAS
1986年第1期36-41,共6页
Geochimica