| 伊利石40Ar-39Ar定年技术在松辽盆地北部下白垩统泉头组四段物源和油气成藏时代研究中的应用 |
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| 引用本文： | 付丽,邱华宁,霍秋立,王雪,曾花森.伊利石40Ar-39Ar定年技术在松辽盆地北部下白垩统泉头组四段物源和油气成藏时代研究中的应用[J].地球化学,2011(5):418-427. |
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| 作者姓名： | 付丽 邱华宁 霍秋立 王雪 曾花森 |
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| 作者单位： | 大庆油田有限责任公司勘探开发研究院;中国科学院广州地球化学研究所 |
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| 基金项目： | 国家重点基础研究发展计划项目(2006CB701404) |
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| 摘 要： | 利用特别研制的纯化装置有效地除弃有机杂质气体,松辽盆地下白垩统泉头组四段砂岩储层伊利石40Ar-39Ar激光阶段加热分析获得了逐渐上升的阶梯型年龄谱.低温阶段伊利石的年龄小于地层年龄,大于但可能接近于油气成藏最早的年龄;高温阶段坪年龄明显老于地层年龄,反映了陆源碎屑伊利石的年龄,用于探讨盆地沉积物的物源.松辽盆地北部下...
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| 关 键 词： | 40Ar-39Ar定年 伊利石 碎屑长石年龄 松辽盆地 |
40Ar-39Ar dating of illite and its application in source of sediments of Lower Cretaceous Quantou 4 member and oil emplacement in North Songliao basin |
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| FU Li,QIU Hua-ning,HUO Qiu-li,WANG Xue,and ZENG Hua-sen.40Ar-39Ar dating of illite and its application in source of sediments of Lower Cretaceous Quantou 4 member and oil emplacement in North Songliao basin[J].Geochimica,2011(5):418-427. |
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| Authors: | FU Li QIU Hua-ning HUO Qiu-li WANG Xue and ZENG Hua-sen |
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| Institution: | 1.Exploration and Development Research Institute of Daqing Oil Field Company Ltd,PetroChina,Daqing 163712,China;2.Guangzhou Insititute of Geochemistry,Chinese Academy of Sciences,Guangzhou 510640,China |
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| Abstract: | Twelve reservoir samples from Lower Cretaceous Quantou 4 member in the Songliao basin were selected for 40Ar-39Ar analysis.40Ar-39Ar age spectra for illite in the sandstone of the Lower Cretaceous Quantou 4 in the Songliao basin were obtained using a purifying system with laser heating.The age indicated by the lower temperature part of the age spectra is younger than the formation age and is older but maybe close to the earliest hydrocarbon charge time.By contrast,the average age indicated by the higher temperature part of age spectra is obviously older than the formation age and represents the age of terrigenous detrital feldspar,which can be used to trace the sediment source.The ages of detrital illite for these samples vary from 107 to 212 Ma,indicating that Quantou 4 member has multiple sediment supplies.Detailed analysis shows that the study region probably has seven source directions. |
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| Keywords: | 40Ar-39Ar dating illite detrital feldspar Songliao basin |
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