| 松辽盆地北部火山岩锆石SHRIMP测年与营城组时代探讨 |
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| 引用本文： | 章凤奇,陈汉林,董传万,庞彦明,舒萍,王岩楼,杨树锋.松辽盆地北部火山岩锆石SHRIMP测年与营城组时代探讨[J].地层学杂志,2008,32(1):15-20. |
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| 作者姓名： | 章凤奇 陈汉林 董传万 庞彦明 舒萍 王岩楼 杨树锋 |
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| 作者单位： | 1. 浙江大学地球科学系,浙江杭州,310027
2. 大庆油田勘探开发研究院,黑龙江大庆,163712 |
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| 基金项目： | 大庆油田勘探开发研究院天然气开发项目 |
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| 摘 要： | 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。
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| 关 键 词： | 火山岩 锆石SHRIMP U-Pb年代学 营城组 白垩系 松辽盆地 黑龙江 |
| 文章编号： | 0253-4959(2008)01-0015-06 |
| 修稿时间： | 2007年8月22日 |
SHRIMP ZIRCON U-Pb GEOCHRONOLOGY OF VOLCANIC ROCKS AND DISCUSSION ON THE GEOLOGICAL TIME OF THE YINGCHENG FORMATION OF THE NORTHERN SONGLIAO BASIN |
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| ZHANG Feng-qi,CHEN Han-lin,DONG Chuan-wan,PANG Yan-ming,SHU Ping,WANG Yan-lou,YANG Shu-feng.SHRIMP ZIRCON U-Pb GEOCHRONOLOGY OF VOLCANIC ROCKS AND DISCUSSION ON THE GEOLOGICAL TIME OF THE YINGCHENG FORMATION OF THE NORTHERN SONGLIAO BASIN[J].Journal of Stratigraphy,2008,32(1):15-20. |
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| Authors: | ZHANG Feng-qi CHEN Han-lin DONG Chuan-wan PANG Yan-ming SHU Ping WANG Yan-lou YANG Shu-feng |
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| Abstract: | The age of the Yingcheng Formation in the Songliao Basin has been disputed. A suite of volcanic intermediate rocks to acidites, mainly acidic eruptive rocks, occurs widely in the Yingcheng Formation in the Xujiaweizi fault-depression in the northern Songliao Basin. SHRIMP zircon U-Pb geochronology gives ages between 111Ma and 113Ma for the volcanic rocks indicating that the volcanic succession formed around Aptian-Albian of the Early Cretaceous. Accordingly it is concluded that this suite of volcanic rocks was emplaced at the middle-upper part of the Yingcheng Formation. Based on available information, the age of the Yingcheng Formation in the northern Songliao Basin is most likely between Hauterivian and Albian. |
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| Keywords: | volcanic rocks SHRIMP zircon U-Pb geochronology Yingcheng Formation Cretaceous Songliao Basin Heilongjiang Province |
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