地质与勘探2025，Vol.61Issue(5)：965-975,11.DOI:10.12134/j.dzykt.2025.05.007
南海神狐海域沉积物物质来源探讨
The Sources of Sediments in the Shenhu Area of the South China Sea
摘要
Abstract
The Shenhu sea area is situated southeast of Shenhu Shoal in the central part of the northern continental slope of the South China Sea.Tectonically,it belongs to the Zhu Ⅱ Depression of the Pearl River Mouth Basin and exhibits favorable conditions for natural gas hydrate accumulation.To investigate the material sources of the surface sediments in this area,this study conducted component analysis on sediments from the HSSY03 station using inductively coupled plasma mass spectrometry(ICP-MS)based on geological surveys.The study primarily examined the geochemical characteristics of rare earth elements(REEs)and explored sediment provenance along with its contributing factors through a comparative analysis of regional geochemical indicators.The results indicate a close relationship between the surface sediments at this station and terrigenous input.ΣREE shows a significant positive correlation with Fe,Ti,and Mn elements,while a notable negative correlation is observed with Sr and Ca elements.This suggests that the sediments at the HSSY03 station are of a mixed sedimentary type.The sediments are primarily derived from terrigenous clastics input from the Pearl River Basin,authigenic components,and biogenic carbonate sediments,all of which contribute significantly to the provenance.This study provides a scientific basis for a deeper understanding of the formation mechanisms of natural gas hydrates in the Shenhu sea area.关键词
表层沉积物/稀土元素/物质来源/神狐海域/南海Key words
surface sediments/rare earth elements/material source/Shenhu area/South China Sea分类
天文与地球科学引用本文复制引用
张旭,刘平,陈畅,李梦玲..南海神狐海域沉积物物质来源探讨[J].地质与勘探,2025,61(5):965-975,11.基金项目
中央高校基本科研业务费项目"水合物分布状态及三维孔隙微观分布特征研究"(编号:ZY20160109)资助. （编号:ZY20160109）
