Chunqiang Zhao
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View article: The Early Cretaceous Granitoids and Microgranular Mafic Enclaves of Sanguliu Pluton, the Liaodong Peninsula: Implications for Magma Mixing and Decratonic Gold Mineralization in the Eastern North China Craton
The Early Cretaceous Granitoids and Microgranular Mafic Enclaves of Sanguliu Pluton, the Liaodong Peninsula: Implications for Magma Mixing and Decratonic Gold Mineralization in the Eastern North China Craton Open
Some Early Cretaceous granitoids characterized by abundant mafic microgranular enclaves (MMEs) formed by magma mixing have been associated with gold deposits in the eastern North China Craton (NCC). However, the genetic connection of magma…
View article: Evolution of the eastern segment of the northern margin of the North China Craton in the Triassic: Evidence from the geochronology and geochemistry of magmatic rocks in Kaiyuan area, North Liaoning
Evolution of the eastern segment of the northern margin of the North China Craton in the Triassic: Evidence from the geochronology and geochemistry of magmatic rocks in Kaiyuan area, North Liaoning Open
本文对华北板块北缘东段辽北开原地区辉长岩和流纹岩进行了岩相学、锆石U-Pb年代学和地球化学研究，结合前人资料探讨古亚洲洋东段三叠纪演化过程。锆石测年结果显示，辉长岩及流纹岩形成时代均为三叠纪（分别为246±2Ma、241±2Ma、226±3Ma及241±2Ma）。三期三叠纪辉长岩具有相似的地球化学特征，起源于地幔，并且在上升就位过程中均受到地壳物质的混染。其中，早三叠世辉长岩（246Ma）起源于受流体改造的富集型岩石圈地幔，由石榴石尖晶石二辉橄榄岩1％部分熔融形成，形成于俯…