海洋地质与第四纪地质2018，Vol.38Issue(1)：87-95,9.DOI:10.16562/j.cnki.0256-1492.2018.01.009
闽江河口表层沉积物重矿物特征与物源示踪
Heavy mineral composition in surface sediments of the Minjiang River estuary and its implications for provenance
摘要
Abstract
230 surface sediment samples from the offshore and 20 samples from the river estuary of the Minjiang River are collected for this study.The distribution pattern of heavy minerals and their provenances are investigated with emphasis on provenances of sediments.A total of 27 species of heavy minerals are identified in the study area,dominated by hornblende,epidote,magnetite and biotite.According to the characteristics of heavy mineral assemblages,the research area is divided into two districts,and three subdistricts of mineral assemblages.The Minjiang estuarine depositional area (Unit Ⅰ-1) is dominated by an assemblage of hornblende-magnetite-epidote assemblage,under the control of the Minjiang River.The longshore mixed depositional area (Unit Ⅰ-2) is characterized by a hornblende-magnetite-biotite-epidote assemblage,resulted from the mixture of the Minjiang River materials and the materials carried by the Zhejiang-Fujian coastal current.The influence of the Minjiang River is obviously weakened in this area.The residual depositional area (Unit Ⅱ) has an assemblage of hornblende-epidote-magnetite,which is the Late Pleistocene deposits of transgressive boundary layer.关键词
重矿物/浙闽沿岸流/物源/闽江口Key words
Minjiang River estuary/heavy mineral/Zhejiang-Fujian coastal current/sediment provenance分类
天文与地球科学引用本文复制引用
马晓红,韩宗珠,毕世普,胡刚,张勇,徐承芬..闽江河口表层沉积物重矿物特征与物源示踪[J].海洋地质与第四纪地质,2018,38(1):87-95,9.基金项目
国家自然科学基金面上项目“山东半岛南部近岸泥质区形成过程对中小河流物源的响应及机制”(41376079) （41376079）
“全新世以来长江远端三角洲的物质混合及其环境指示”(41676052) （41676052）
海洋区域地质调查项目(DD20160137,GZH201400402) （DD20160137,GZH201400402）
