Holocene sedimentary environments in Central Pacific Ocean

The vertical distribution of the major and trace elements from the Holocene deposits are elucidated on the basis of mineralogy,organic fossils,geochemistry and provenance analysis of the core samples from the CP9 and CP25 wells and surficial sediments samples from 19 well sites in Central Pacific Ocean.The R-mode factor analysis and provenance analysis have disclosed that the deposits in the study area consist significantly of terrigenous clastic and bioclastic deposits.The supply of volcanic deposits is more sufficient in the later stages than in the early stages.On the whole,the Holocene sedimentary environments are relatively stable.