排序方式： 共有4条查询结果，搜索用时 0 毫秒
1
1.
2.
Q-mode factor analysis was applied to 99 surface samples from the South China Sea to define four planktonic foraminiferal assemblages: tropical-subtropical assemblage, high-salinity assemblage, transitional assemblage and dissolution resistant assemblage. The tropical-subtropical assemblage is a dominant assemblage. The variation of the planktonic foraminifera of this assemblage reflects the changes of tropical surface water from the west Pacific to South China Sea. These four assemblages reveal that different planktonic foraminiferal assemblages are controlled by different factors in the South China Sea, such as tropical-subtropical assemblage controlled by sea surface temperature (SST), high-sallnity assemblage mainly by salinity besides SST, transitional assemblage by SST and dissolution resistant assemblage by water depth. 相似文献
3.
4.
Based on grain size types of the sediments, combined with characteristics of organism, mineral and chemical composition of the sediments, and a comprehensive analysis from the viewpoint of the origin of sediments, sediments in the region studied are classified into four sedimentary types, namely, terrigenous detritus (including five zones of sediments), biogenic-terrigcnous (including three zones of sediments), authigenous-terrigenous (containing some authigenic scdimentary minerals) and volcanic-terrigenous (containing certain volcanic detritus) types. Characteristics of all these types, their relationships and spatial distributions are also discussed. 相似文献
1