中国内蒙古下白垩统白彦华群胜利组的首个同位素年龄(英文)THE FIRST RADIOMETRIC AGE OF THE SHENGLI FORMATION(LOWER CRETACEOUS) OF INNER MONGOLIA, CHINA
沈豪轩,张春晖,吴云飞,吕苗,王鑫
摘要(Abstract)：
由于丰富的煤炭资源,内蒙古的下白垩统地层具有重要的经济价值。但长期以来相关地层一直缺乏同位素测年研究,影响了区域地层对比工作的开展。本文对内蒙古锡林浩特下白垩统胜利组煤层夹层中的火山灰锆石应用LA-ICP-MS进行U-Pb法测年,结果显示胜利组5煤(层)和6煤(层)形成于大约109—107Ma(早白垩世阿尔布期)。这是胜利组所属的下白垩统白彦华群的首个同位素年龄,有助于我国东北地区与全球同时代地层对比工作的开展。
关键词(KeyWords)： 阿尔布期;白垩纪;煤;胜利组;内蒙古;同位素年龄
基金项目(Foundation): 中国科学院战略性先导科技专项B类(XDB26000000);; 国家自然科学基金(91514302、91114201)共同资助
作者(Author): 沈豪轩,张春晖,吴云飞,吕苗,王鑫
DOI: 10.19839/j.cnki.dcxzz.2021.0015
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