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一九八三年,我国地球化学一些主要领域的发展可简述下如。1.同位素地质年代学和稳定同位素地球化学在1983年9月北京国际前寒武地壳演化讨论会上,法籍华人江博明报导了冀东曹庄附近九个玄武质样品的 Sm-Nd 等时线年龄为3515±115百万年,Nd~(143)/Nd~(144)为0.5087±0.00013。这是目前我国地壳的最老年龄。国内外学者对这一数据的地质意义还有争论,一些人认为这是包体年龄,不代表周围地质体;一些人认为可能为残留体。
In 1983, the development of some major fields of geochemistry in China can be briefly described as follows. 1. Isotopic Geochronology and Stable Isotope Geochemistry At the September 1983 Beijing International Precambrian Crust Evolution Conference, French Chinese Jiang Boming reported the Sm-Nd isochronism of nine basaltic samples near Caozhuang, eastern Hebei The line age is 3515 ± 115 million years and the Nd ~ (143) / Nd ~ (144) is 0.5087 ± 0.00013. This is the oldest age of the crust in our country. Domestic and foreign scholars on the geological significance of this data is still controversial, some people think that this is the inclusion age, does not represent the surrounding geological body; some people think it may be a residual body.