There are 37 lectures, major headings are geochronology, radiogenic isotope geochemistry and stable isotope geochemistry.
这里有37讲,主要是质年代学、放射性学和稳学。
By using the approach of morphostructure and tectonic chronology analysis, neotectonic activity evidences and characteristics as well as its ralation to uranium mineralization were researched.
通过构造貌和构造年代学的分析方法,对其表现特徵和运动特徵及其与铀成矿之间的关系进行研究。
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It has been dated, using " uranium-lead" geochronology dating techniques.
用“铀铅”地质学技术测定了它。
So this is a little trick I learned, oh god, in the '80s.
所以是我上世纪80学到一个小技巧。
Yeah, this guy's either an amateur or he studied psychology in the eighties.
要么是业余爱好者 要么80学过心理学。
VALERIE TROUET: I'm professor of dendrochronology at the University of Arizona.
瓦莱丽·特鲁埃特:我是亚利桑那大学树木学教授。
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