Distribution and composition characteristics of heavy minerals in surficial sediment of Minjiang Estuary
Heavy minerals with a size range of 0.125～0.250 mm in the surficial sediment of Minjiang Estuary are studied. Thirty-four heavy minerals have been identified, with an average content of 1.92%. Major minerals include magnetite, epidote, hematite, hornblende, ilmenite, and zircon mica. These types are the same as those in the 0.063～0.125 mm range; however, the average content is lower, which reveals that the heavy minerals in Minjiang Estuary are mainly enriched in the very-fine sand fraction. According to the content and distribution characteristics of the major heavy minerals, Minjiang Estuary can be divided into 4 mineral assemblage zones. In each zone the assemblage of heavy minerals is greatly affected by the hydrodynamic condition and the sedimentary environment. Heavy mineral types also show that detrital matters in Minjiang Estuary are originated from the weathering and erosion of the bedrock in the Minjiang River drainage area.
作 者： XU Maoquan Xu Wenbin SUN Meiqin 作者单位： XU Maoquan(Department of Oceanography, Xiamen University, Xiamen 361005, China;Institute of Subtropical Oceanography, Xiamen University, Xiamen 361005, China)Xu Wenbin,SUN Meiqin(Department of Oceanography, Xiamen University, Xiamen 361005, China)
刊 名： 海洋学报（英文版） SCI 英文刊名： ACTA OCEANOLOGICA SINICA 年，卷(期)： 2005 24(3) 分类号： P7 关键词： heavy mineral distribution characteristics sedimentation origin of matter Minjiang Estuary