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近几年来,为配合寻找富铁矿及其他科研任务,对冀东、辽东、豫西、川西等地的前寒武系,及庐枞、宁芜、繁昌和浙西等地的中生代火山岩地层进行了同位素年龄测定和研究。在所内外的大力支持协助下,进行了野外观察和采样,同时接受了所内外兄弟单位送来的样品及有关地层资料。我们对这些样品进行了同位素年龄测定。冀东、辽东、豫西和川西前寒武纪地层的样品,主要用Rb-Sr全岩等时线法,其中对川西的样品并用了少数K-Ar法。对庐枞、宁芜、繁昌和浙西的中生代地层样品,主要用K-Ar法。对浙西的个别样品并用了Rb-Sr全岩等时线法。对测定得到的部分年龄数据,以前曾以不同方式报道。本
In recent years, in response to the search for iron-rich ore and other scientific research tasks, the Mesozoic volcanic rocks of the Precambrian in eastern Hebei, eastern Liaoning, western Henan and western Sichuan, and the Mesozoic volcanic rocks in Luzong, Ningwu, Fanchang and western Zhejiang Isotope age determination and study. With the support of both inside and outside, we conducted field observation and sampling and received samples and relevant stratum data from brothers and sons inside and outside the country. We performed isotope dating of these samples. The samples of Jidong, Liaodong, West Henan and Precambrian strata in western Sichuan mainly use the Rb-Sr whole-rock isochron method, and a few K-Ar methods are used for the samples in western Sichuan. For Luzong, Ningwu, Fanchang and western Zhejiang, Mesozoic stratigraphic samples are mainly K-Ar method. For the individual samples of western Zhejiang, the Rb-Sr whole rock isochron method was used. Part of the data obtained from the measurement was previously reported in different ways. this