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Discovery of Late Paleozoic adakite from the basement of the Hailaer Basin in NE China and its geological implication
Author(s): ZHANG Fengqi, CHEN Hanlin, CAO Ruicheng, MENG Qian, ZHU Defeng, WANG Zhiguo
Pages: 633-
641
Year: 2010
Issue:
2
Journal: Acta Petrologica Sinica
Abstract: 海拉尔盆地的前中生代基底隶属中亚造山带东段的兴蒙造山带.在盆地基底地层中发现了具有adakite成分特征的粗面安山岩、英安岩和闪长玢岩.这些火成岩与晚古生代沉积地层交互或伴生,共同构成晚中生代裂陷盆地的基底.地球化学研究表明,这些火成岩基本上属于高钾钙碱性和准铝质岩石系列,具有高SiO2和Al2O3含量,高Sr、Sr/Y和La/Yb值,富集轻稀土(LREE),亏损重稀土(HREE)、Y和高场强元素...
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