| 基于磁学和粒度参数的黄河三角洲刁口叶瓣地区全新世以来的地层演化 |
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| 引用本文： | 刘修锦,王永红,李广雪,孙涛,张卫国.基于磁学和粒度参数的黄河三角洲刁口叶瓣地区全新世以来的地层演化[J].沉积学报,2014,32(3):518-526. |
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| 作者姓名： | 刘修锦 王永红 李广雪 孙涛 张卫国 |
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| 作者单位： | 中国海洋大学海洋地球科学学院海底科学与探测技术教育部重点实验室;河北省地矿局秦皇岛矿产水文工程地质大队;Exxon |
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| 基金项目： | 国家自然科学基金面上项目(批准号:41176039,41376054)、国家自然科学基金重点项目(批准号:41030856);山东省自然科学基金重点项目(批准号:ZR201DZ001)联合资助 |
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| 摘 要： | 黄河三角洲刁口叶瓣经历了完整的亚三角洲自然发育过程，因此研究其现代发育过程以及全新世以来的地层演化，对于认识整个现代黄河三角洲的形成过程具有重要的理论意义。通过对刁口叶瓣北部的ZK10-3和ZK30孔沉积物粒度、环境磁学参数的测量分析，以及AMS 14C测定，结合收集的刁口叶瓣南部的ZK227、ZK1和ZK228钻孔数据结果，探讨了黄河三角洲刁口叶瓣地区全新世以来的地层演化以及刁口叶瓣的现代形成过程。结果表明该地区全新世以来大致经历了浅海-河湖-盐沼-浅海-三角洲等沉积环境演变过程。1855年来，该地区接受黄河三角洲沉积，依次经历了前三角洲沉积-三角洲侧缘沉积-三角洲平原沉积。1964年刁口叶瓣开始形成，其演化大致经历了漫流淤积-单一河道沉积-出汊改道沉积-废弃蚀退四个阶段。和密西西比河三角洲的叶瓣发育模式相比，由于河流泥沙含量高，因此漫流沉积较为发育。
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| 关 键 词： | 粒度 磁性特征 全新世地层 发育模式 |
| 收稿时间： | 2013-05-06 |
Stratigraphy Evolution of the Diaokou Lobe Area in the Huanghe Delta since Holocene: Implication from grain size and magnetic properties |
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| Abstract: | The Yellow River brought a great deal of sediments to Diaokou area during 1964~1976 when the Yellow River changed its course to Diaokou River, deposited and formed the Diaokou lobe. It has experienced complete natural evolution process of modern Yellow River delta and has formed a complete set of modern Yellow River delta depositional system, and it is of great theoretical significance to recognize the evolution of the modern Yellow River Delta. Based on the characteristics of grain size, magnetism and AMS 14C of Cores ZK10-3 and ZK30 in the north of Diaokou lobe, combined with Cores ZK227, ZK1, ZK228 in the south of Diaokou lobe, we discussed the recent and Holocene stratigraphic evolution of the Diaokou lobe area and its formation process. Sedimentary stratigraphy of Diaokou lobe from the Holocene may include facies of shallow sea, river and lake, salt marsh, shallow sea and delta from bottom to top. The study area received deltaic deposit from 1855, experienced prodelta, delta front (lateral) area and delta plain. After 1964, when the Diaokou lobe began to form, it experienced four stages of flow deposition, single channel deposition, diversion deposition and abandoned erosion. |
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