These sediments form an underwater delta that has several canyon-like channels .

这些沉积物形成了一个拥有好几个类似于峡谷通道的水下三角洲。

Martin kennedy and colleagues analysed hundreds of samples of ancient marine sediments from south australia .

马丁肯尼迪（martinkennedy）和他的同事分析了数百件来自南澳大利亚的远古海洋沉淀物样本。

Gray and white materials within the lake bed are exposed sediments and salt crusts .

河床内部的灰色和白色物质显示出是沉积物和盐结层。

Both events can be recognized in sediments worldwide in the form of exhaust gas particles and radioactive fallout respectively .

这两个事件可以在全球沉积物中以废气微粒和放射性沉降物的形式分别予以确认。

Berg 's team is in contact with scientists in dhaka to evaluate arsenic migration into deeper sediments .

伯格的团队正与达卡的科学家们合作，评估砷元素向深层沉积物中移动的情况。