海洋地质与第四纪地质2017，Vol.37Issue(1)：77-85,9.DOI:10.16562/j.cnki.0256-1492.2017.01.009
海底地形特征对东菲律宾海表层黏土矿物分布的影响
IMPACT OF SEAFLOOR TOPOGRAPHY ON DISTRIBUTION OF CLAY MINERALS IN THE EAST PHILIPPINES SEA
摘要
Abstract
We analyzed the clay mineral assemblages,contents and mineralogical characteristics for the 125 surface sediments recovered from the Parece Vela Basin.It is found that the clay minerals are mainly composed of smectite (average 49％),illite (average 35％) and chlorite (average 11％) with minor kaolinite (average 5％).Comparing the clay mineral assemblages and their crystallographic characters with the potential provenances,we suggest that smectite is mainly from the volcanic arc materials around the Parece Vela Basin and its distribution pattern may be mainly controlled by deep currents.Illite and chlorite are mainly derived from the Asian eolian deposits transported by wind.The spatial distribution of clay minerals indicates that illite dominates the lower terrain,while smectite is concentrated in the higher places near the Palau ridge and the Yap ridge.With the minimal effects of the volcanic material dilution and the influence of deep current erosion,the eolian flux in the deep East Philippine Sea can represent the actual contribution of Asian wind dust to the study area.It will be of great significance to extract the wind dust from the East Philippine Sea sediments for the further study of the paleoclimate evolution in the Asian continent.关键词
黏土矿物/物源/海底地形/东菲律宾海/帕里西维拉海盆Key words
clay mineralsl/provenance/seafloor topography/East Philippines Sea/Parece Vela basin分类
海洋科学引用本文复制引用
黄杰,万世明,张国良,徐兆凯,刘华华,董江,李安春,李铁刚..海底地形特征对东菲律宾海表层黏土矿物分布的影响[J].海洋地质与第四纪地质,2017,37(1):77-85,9.基金项目
全球变化及海气相互作用项目(GASI-04-01-02,GASI-GEOGE-03) （GASI-04-01-02,GASI-GEOGE-03）
中国科学院战略性先导科技专项(A类)项目(XDA11030103) （A类）
中国科学院创新交叉与合作团队“海山成因、演化及深部物质循环” （）
