The clay minerals in the sediments of oceans, particularly the distribution characteristics of clay minerals, have been extensively studied by some writers during the last twenty years and some important views have be...The clay minerals in the sediments of oceans, particularly the distribution characteristics of clay minerals, have been extensively studied by some writers during the last twenty years and some important views have been given, of which one is that the content of clay minerals varies with latitude. Based on the data of analyzing more than 30 samples of the展开更多
Geochemical characteristics of more than 10 cores from the marginal seas of the WestPacific Ocean have been studied and anomalous enrichment of Mn at some layers in thecores, specially at the top of the cores, has bee...Geochemical characteristics of more than 10 cores from the marginal seas of the WestPacific Ocean have been studied and anomalous enrichment of Mn at some layers in thecores, specially at the top of the cores, has been found. Here K<sub>1</sub> is defined as thecoefficient of relative enrichment of Mn at a layer （the content of Mn at a layer/the aver-age content of Mn in a core）, K<sub>2</sub>, as the coefficient of enrichment of Mn at a layer（thecontent of Mn at a layer/the average content of Mn in shallow sea deposit） in order展开更多
文摘The clay minerals in the sediments of oceans, particularly the distribution characteristics of clay minerals, have been extensively studied by some writers during the last twenty years and some important views have been given, of which one is that the content of clay minerals varies with latitude. Based on the data of analyzing more than 30 samples of the
文摘Geochemical characteristics of more than 10 cores from the marginal seas of the WestPacific Ocean have been studied and anomalous enrichment of Mn at some layers in thecores, specially at the top of the cores, has been found. Here K<sub>1</sub> is defined as thecoefficient of relative enrichment of Mn at a layer （the content of Mn at a layer/the aver-age content of Mn in a core）, K<sub>2</sub>, as the coefficient of enrichment of Mn at a layer（thecontent of Mn at a layer/the average content of Mn in shallow sea deposit） in order
