| 基于碎屑锆石定年的饶阳凹陷蠡县斜坡沙河街组物源分析 |
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| 引用本文： | 陈贺贺,朱筱敏,黄捍东,施瑞生,罗亚能,崔刚.基于碎屑锆石定年的饶阳凹陷蠡县斜坡沙河街组物源分析[J].地球科学,2017,42(11):1955-1971. |
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| 作者姓名： | 陈贺贺 朱筱敏 黄捍东 施瑞生 罗亚能 崔刚 |
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| 作者单位： | 1.中国石油大学油气资源与探测国家重点实验室, 北京 102249 |
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| 基金项目： | 国家科技重大专项2016ZX05001002-006 |
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| 摘 要： | 为明确饶阳凹陷蠡县斜坡沙河街组沙一段物源组合与沉积体系配置关系，针对饶阳凹陷蠡县斜坡沉积缓坡带多物源供给的特征，结合传统物源研究方法，通过碎屑锆石年龄谱与物源区基岩年龄对比，精细刻画沙河街组沙一段物源体系.依据沙一段古地貌差异及钻井分布特征，将斜坡划分为A、B、C 3个区，对应3个物源体系，研究表明，西北部物源体系母岩为华北北缘及兴-蒙造山带晚古生代（Pz）火成岩，由古大清河水系自西北向斜坡A区供源；西部物源体系母岩为涞源地区中生代（Mz）火成岩、中-新元古界（Pt2+3）侵入岩、中-新太古代（Ar2+3）变质岩，由古唐河水系自西向斜坡B区供源；西南部物源体系母岩为五台地区古元古代（Pt1）滹沱系变质岩、中基性火成岩，由古大沙河水系自西南向斜坡C区供源.且碎屑锆石含量与流域面积成正相关关系.
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| 关 键 词： | 物源体系 基岩类型 锆石U-Pb定年 古水系 蠡县斜坡 石油地质 |
| 收稿时间： | 2017-05-14 |
Sediment Provenance of Shahejie Formation in Lixian Slope of Raoyang Depression Based on the Detrital Zircon Dating Analysis |
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| Abstract: | The purpose of this study is to clarify the relationship between sediment provenance combination and sedimentary system of the Member 1 of Paleogene Shahejie Formation, Lixian county slope, Raoyang depression. According to the characteristics of sedimentary gentle slope in Raoyang sag, the distribution of the source systems and "Source-to-Sink" configuration of the Member 1 of Paleogene Shahejie Formation are discussed, based on the detrital zircon U-Pb dating and traditional method of provenance analysis in this study. According to the difference of paleo geomorphology and drilling distribution characteristics, the slope is divided into three areas, A, B and C, which correspond to three provenance systems respectively. More specifically, in terms of the northwest provenance system, the provenance is the Paleozoic igneous rocks from the Xing-Meng orogenic belt, carried by ancient Daqing river system from the northwest to the A district of theslope. As to the west provenance system, the provenance is the Mesozoicigneous rocks, the Meso-Neoproterozoicintrusive rocks, the Mesoproterozoic metamorphic rocks in Laiyuan district, carried by the ancient Tanghe river system from west to the B district of the slope. In the case of the southwest provenance system, the provenance is the Paleoproterozoic metamorphic rocks, carried by the ancient Dasha river system from the southwest to the C district of the slope. There is a positive correlation between detrital zircon content and drainage area. |
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