华南地震2025，Vol.45Issue(4)：67-74,8.DOI:10.13512/j.hndz.2025.04.09
识别华南沿海软沉积物变形构造的μ-XRF面扫技术探讨
Investigation of μ-XRF Technology for Identifying Soft Sediment Deformation Structures in the South China Coastal Area
摘要
Abstract
The analysis of soft-sediment deformation structures is a crucial approach in paleoseismic studies.In re-cent years,the phenomenon of soft-sediment deformation in the Quaternary basins along the South China coast has garnered increasing attention.However,these soft-sediment deformation structures are often revealed through core samples,which have limited visibility and are susceptible to interference.Therefore,there is an urgent need for an appropriate method to identify the macroscopic structures and detailed characteristics of soft-sediment deformation.Micro-X-ray fluorescence(μ-XRF)mapping technology is capable of identifying the types and distribution charac-teristics of elements within samples,making it a direct and effective means for analyzing soft-sediment deformation structures in core samples.Although its application is still in its infancy,it merits further exploration.This study conducts an in-depth analysis of soft-sediment deformation structures in the late Pleistocene mottled clay layers of the South China coastal region,discusses the major elements that can effectively indicate such structures,and es-tablishes a μ-XRF analytical method suitable for soft-sediment deformation in the late Quaternary.The results indi-cate that the Fe element in the study area is a relatively stable and effective indicator for identifying soft-sediment deformation,with other elements playing a supportive role in discrimination.Furthermore,the pretreatment meth-od using epoxy resin to cure and polish samples significantly enhances the scanning quality of μ-XRF.This μ-XRF mapping analysis method can effectively assist in the macroscopic identification of soft-sediment deformation,re-veal its deformation details,and provide micro-scale technical support for the study of regional tectonical stability.关键词
μ-XRF/软沉积物变形/晚第四纪/华南沿海/花斑黏土Key words
μ-XRF/Soft-sediment deformation/Late Quaternary/South China coastal/Mottled clay分类
天文与地球科学引用本文复制引用
黄屏,曾钧跃,林杰春,陈震,梁浩,马俊强..识别华南沿海软沉积物变形构造的μ-XRF面扫技术探讨[J].华南地震,2025,45(4):67-74,8.基金项目
国家自然科学基金(42272250) （42272250）
广东省基础与应用基础研究基金(2023A1515011812) （2023A1515011812）
东莞市多要素城市地质调查(HT[2021]0203号) （HT[2021]0203号）
佛山市南海区城市地质调查项目(JF2021(NH)WZ0246) （JF2021(NH）
佛山三龙湾高端创新集聚区城市地质调查(启动区外)(BZ0121090) （启动区外）
惠州市城市地质调查项目(2021年度)(GDJR2021066) （2021年度）
广东省国土资源保护与治理专项资金(2017201)联合资助. （2017201）
