%0 Journal Article %A GENG Yuan-sheng %A SONG Biao %A WAN Yu-sheng %A YANG Chong-hui %T Post-Orogenic Granites with an Age of 1800Ma in Luliang Area, North China Craton: Constraints from Isotopic Geochronology and Geochemistry %D 2004 %R %J Geological Journal of China Universities %P 477-487 %V 10 %N 4 %X Major trace element characteristics and zircon U-Pb SHRIMP dating of the Luyashan augite-monzonites and Yunzhongshan granites in Luliang area, Shanxi Province indicate that the Luyashan augitemonzonites and Yunzhongshan granites belong to the post-orogenic granite.Zircon grains from the Luyashan augite-diorite yield a SHRIMP U-Pb age of 1 794±13 Ma and zircon grains from the Yunzhong-shan granite a SHRIMP age of 1 801±llMa. Determination of post-orogenic granites at ca.1 800 Ma provides direct evidence for constraints on the ending time of the orogeny at the end of Paleoproterozoie. %U https://geology.nju.edu.cn/EN/abstract/article_8722.shtml