Intercalibration of 40Ar/39Ar laboratories in China, the USA and Russia for Emeishan volcanism and the Guadalupian–Lopingian boundary  

作　　者：Brian R.Jicha Brad S.Singer Youjuan Li 

机构地区：[1]Department of Geoscience,University of Wisconsin-Madison,USA [2]State Key laboratory of Earthquake Dynamics,Institute of Geology,China Earthquake Administration,China

出　　处：《National Science Review》2019年第4期614-616,共3页国家科学评论（英文版）

基　　金：supported by the National Natural Science Foundation of China(41688103 and41425013);the Strategic Priority Research Program B of the Chinese Academy of Sciences(XDB18030505)

摘　　要：Precise geochronology is essential for constraining rates of sedimentary,biotic;climatic and magmatic processes over a wide range of timescales throughout Earth's history.Targets for high-precision geochronology include lava flows or minerals from volcanic tuffs that are interbedded within sedimentary strata.High-precision dates from these materials commonly provide temporal anchors,allow disparate stratigraphic records to be correlated with one another and form the basis of the geologic timescale.

关 键 词：essential form be 

分 类 号：P317[天文地球—固体地球物理学] P597.3[天文地球—地球物理学]