现代黄河三角洲沉积物沉积年代的确定

薛春汀; 叶思源; 高茂生; 丁喜桂

现代黄河三角洲沉积物沉积年代的确定

国土资源部, 青岛海洋地质研究所国土资源部海洋油气资源和环境地质重点实验室, 山东, 青岛, 266071;国土资源部, 青岛海洋地质研究所, 山东, 青岛, 266071

基金项目: 黄河三角洲湿地系统综合地质调查与评价项目资助(1212010611402)

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出版历程
- 收稿日期: 2008-04-14
- 修回日期: 2008-09-11

Determination of depositional age in the Huanghe Delta in China

Key Laboratory of Marine Hydrocarbon Resources and Environmental Geology of Ministry of Land and Natural Resources, Qingdao Institute of Marine Geology, Ministry of Land and Natural Resources, Qingdao 266071, China;Qingdao Institute of Marine Geology, Ministry of Land and Natural Resources, Qingdao 266071, China

摘要

摘要: 黄河三角洲前缘粉砂分布于河口外中部,三角洲侧缘或分流间湾黏土质粉砂分布于三角洲前缘粉砂体的两侧。分流改道时新的分流河口大多分布在老叶瓣三角洲侧缘或分流间湾位置。这样,年轻的三角洲前缘粉砂覆盖在老三角洲侧缘或分流间湾黏土质粉砂之上,与此同时,年轻的三角洲侧缘或分流间湾黏土质粉砂覆盖在老三角洲前缘粉砂之上,形成规律性的叠覆层序。在观察钻孔岩心时,正确判断某一层的沉积环境,追踪其物质来历,即判断是从哪一条分流河道搬运来的物质形成的,该分流河道的活动年代就是该层形成的年代。
- 现代黄河三角洲 /
- 沉积环境 /
- 历史地理学 /
- 沉积地质学 /
- 沉积年代
Abstract: The comprehensive analysis of historical geography and sedimentary geology can be applied for dating the sedimentary layers of this very young delta.The form of the subaqueous delta lobe is like a lens and the delt a front silt is located at the middle off the river mouth and the delta lateral(interdistributary bay)clayey silt is distributed beside the delta front.Commonly the younger distributary channel mouth is located between two abandoned river mouths.The younger delta front silt overlays the older delt a lateral (interdistributary bay)clayey silt and the younger delt a lateral(interdistributary bay)clayey silt overlays the older delta front silt simultaneously.The historical record of the location and dates of each distributary channel have been made.After determining sedimentary environments of the layers in core and sediment sources,the dates of the layers are got because the dates of the distributary channels are also the dates of the layers.
- modern Huanghe Delta /
- sedimentary environment /
- historical geography /
- sedimentary geology /
- depositional age

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