含山—无为地区下蜀黄土地球化学特征及物源探讨  

Geochemical characteristics and provenance of Xiashu loess in Hanshan-Wuwei area

作　　者：陈默 李龙明[1] 阚天翔 蒋仁[2] 吴雪峰[3] 李加好[1] CHEN Mo;LI Longming;KAN Tianxiang;JIANG Ren;WU Xuefeng;LI Jiahao(School of Resources and Environmental Engineering,Hefei University of Technology,Hefei 230009,China;Nanjing Geological Survey Center,China Geological Survey,Nanjing 210016,China;Geological Survey of Anhui Province,Hefei 230001,China)

机构地区：[1]合肥工业大学资源与环境工程学院,安徽合肥230009 [2]中国地质调查局南京地质调查中心,江苏南京210016 [3]安徽省地质调查院,安徽合肥230001

出　　处：《合肥工业大学学报（自然科学版）》2023年第11期1524-1531,1579,共9页Journal of Hefei University of Technology：Natural Science

基　　金：中国地质调查局地质调查资助项目(DD20190043,DD20190045)。

摘　　要：第四纪中—晚更新世以来,长江下游广泛发育黄土沉积,下蜀黄土是其中的典型代表。文章研究含山—无为地区下蜀黄土的地球化学特征,并与北方西峰黄土、东秦岭黄土和南方镇江、九江、合肥、宣城等地下蜀黄土进行对比分析。结果表明:含山—无为地区下蜀黄土经历了中等化学风化;主、微量元素特征表现出与北方西峰黄土的相对一致性,因此北方黄土高原黄土可能是含山—无为地区下蜀黄土主要物源之一。研究结果可为研究长江中下游地区下蜀黄土的物源及物源区古环境信息提供参考。Since the Middle to Late Pleistocene of the Quaternary,a wide range of loess deposits has been widely developed in the lower reaches of the Yangtze River,of which Xiashu loess is a typical representative.This paper studies the geochemical characteristics of Xiashu loess in Hanshan-Wuwei area,and compares them with Xifeng loess and Eastern Qinling loess in north China and Zhenjiang,Jiujiang,Hefei,Xuancheng loess in south China,respectively.The results show that Xiashu loess in Hanshan-Wuwei area has experienced moderate chemical weathering,and the ratios of major and trace elements are relatively consistent with those of Xifeng loess in north China,so the loess of Loess Plateau in north China may be one of the main sources of Xiashu loess in Hanshan-Wuwei area.The study of the provenance of Xiashu loess in this area can not only understand the paleoenvironmental information of the provenance area,but also provide new ideas for the provenance study of Xiashu loess in the middle and lower reaches of the Yangtze River.

关 键 词：含山—无为地区 下蜀黄土 地球化学特征 物源 

分 类 号：P534.631[天文地球—第四纪地质学] P595[天文地球—古生物学与地层学]