松辽盆地北部火山岩锆石SHRIMP测年与营城组时代探讨SHRIMP ZIRCON U-Pb GEOCHRONOLOGY OF VOLCANIC ROCKS AND DISCUSSION ON THE GEOLOGICAL TIME OF THE YINGCHENG FORMATION OF THE NORTHERN SONGLIAO BASIN
章凤奇,陈汉林,董传万,庞彦明,舒萍,王岩楼,杨树锋
摘要(Abstract)：
前人对松辽盆地营城组的时代存在不同认识。利用松辽盆地北部徐家围子断陷区营城组广泛发育的中—酸性火山岩取芯资料,开展了详细的火山岩锆石SHRIMP U-Pb年代学研究,结果表明营城组火山岩年龄集中在113—111Ma之间,属于早白垩世晚期的Aptian与Albian界线附近,从而明确该套火山岩应发育在营城组中上部的新认识,并由此说明营城组的顶界已跨入Albian。因此,认为松辽盆地营城组的时代为Hauterivian到Albian。
关键词(KeyWords)： 火山岩;锆石SHRIMP U-Pb年代学;营城组;白垩系;松辽盆地;黑龙江
基金项目(Foundation): 大庆油田勘探开发研究院天然气开发项目
作者(Author): 章凤奇,陈汉林,董传万,庞彦明,舒萍,王岩楼,杨树锋
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