Determination of depositional age in the Huanghe Delta in China
Determination of depositional age in the Huanghe Delta in China
复制标题
DOI：
--
复制
发表时间：
2009
影响因子：
1.4
通讯作者：
Xi-gui Ding
中科院分区：
文献类型：
--
作者：
Xi-gui Ding
通过历史地理和沉积地质的综合分析，确定了这一非常年轻的三角洲的沉积层位，水下三角洲瓣体形态呈透镜状，三角洲前缘粉砂位于河口中部和三角洲边缘（分流间湾）粘土质粉砂分布在三角洲前缘附近，较年轻的分流河口一般位于两个废弃河口之间，较年轻的三角洲前缘淤泥覆盖在较老的三角洲边缘（分流间湾）粘土质粉砂和较年轻的三角洲侧向三角洲前缘砂体上同时覆盖着（分流间湾）粘土质粉砂，对各分流河道的位置和年代作了历史记录，在确定岩心各层的沉积环境和物源后，由于分流河道的年代也是各层的年代，因此可以得到各层的年代。
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 delta 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 delta lateral(interdistributary bay) clayey silt and the younger delta 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.