The yellow brown soil had been formed in the downwind direction of the aeolian sand deposits in the southwestern margin of Poyang Lake which was revealed by OSL age test as the sand and dust accumulations in the last glacial period. According to the grain size analysis and the geomorphology and sedimentology study of the sand hill and the solum (yellow brown soil) in the Houtian-Daguling transect in the south-west bank of the Gan River, we concluded that sedimentary facies of this section had been transmitted from sand to sandy loess soil to clay loess along the direction (NE 30°) of the present winter monsoon. The grain composition and parameters show a systematic change from the north to the south with carry momentum and single and stable provenance. The grain parameters displayed a differential mode of a logarithmic function with the distance to the provenance. Within the distance of 20 km, they changed significantly, but out of this distance, they gradually tended to be stable. Thus, the distance of 20 km might be a characteristic distance for debris sorting. The OSL age test shows that the accumulation system was generated from (94.18±4.82)ka which is consistent with the regional age framework. The study of regional sand-dust accumulation system in this area will provide a theoretical basis for the provenance identification of dust accumulation.
WANG Xi-mei,ZHANG Zhi,Ling Chao-hao,Wan Zhi-wei,JIA Yu-lian, WANG Ye-qiao
. Grain size characteristic of regional sand-dust accumulation system in southwest of Poyang Lake[J]. Arid Land Geography, 2019
, 42(1)
: 29
-37
.
DOI: 10.12118/j.issn.1000-6060.2019.01.04
[1] 杨达源.江南的晚更新世风成砂丘[J].中国沙漠,1985，5(4):36-43[YANG Dayuan.Aeolian dunes of the late Pleistocene on south bank at the mid-lower reaches of Yangtze River[J]. Journal of Desert Research, 1985，5(4):36-43.]
[2] 邹学勇.赣江下游地区的风成沉积物[J].中国沙漠,2001，21(4):25-30.[ZOU Xueyong.,Aeolian sediment in downstream area of Ganjiang River[J].Journal of Desert Research,2001,04:25-30.]
[3] 胡雪峰,龚子同,夏应菲,等.安徽宣州黄棕色土和第四纪红土的比较研究及其古气候意义[J].土壤学报,1999,36(3):301-307.[HU Xuefeng, Gong Zitong, Xia Yingfei, et al.Comparative study of yellow-brown earth and Quaternary red clay in Xuanzhou, Anhui Province and its paleo-climate significance[J]. Acta Pedologica Sinica,1999,36(3):301-307.]
[4] 杨达源.中国东部的第四纪风尘堆积与季风变迁[J].第四纪研究,1991，11(4):354-360.[YANG Dayuan.The Quaternary dust-fall accumulation and the monsoon variability in eastern China[J]. Quaternary Sciences,1991,11(4):354-360.]
[5] 席承藩,张俊民.中国土壤区划的依据与分区[J].土壤学报,1982，97(2):109-212.[XI Chengfan, ZHANG Junmin.The soil regions of China[J]. Acta Pedologica Sinica,1982,97(2):109-212.]
[6] 刘东生,丁梦林,.中国第四纪地层和更新统上新统界线.第四纪研究[J],1985，6(2):9-18.[LIU Dongsheng,DING Menglin.The quaternary strata and boundary of pliocene series and pleistocene series in China[J]. Quaternary Research,1985, 6(2):9-18.]
[7] 朱丽东,叶玮,周尚哲等,.中亚热带第四纪红粘土的粒度特征[J].地理科学,2006，26(5):586-591.[ZHU Lidong,YE Wei, ZHOU Shangzhe, et al.Grain-size features of red Earth in Mid-subtropics[J]. Chinese Geographical Science,2006,26(5):586-591.]
[8] JIA Y L., ZHANG J R., LAI Z P., et al.Chronology and provenance of aeolian sediments in the middle reaches of the Yangtze River in China[J]. Quaternary Geochronology,2010，10:44-49.
[9] 李徐生,韩志勇,杨达源，等.末次冰期鄱阳湖西南缘地区的风尘堆积[J].海洋地质与第四纪地质,2006,26(1):101-108.[LI Xusheng, HAN Zhiyong, YANG Dayuan,et al.Aeolian-dust deposit to the southwest of the Poyang Lake during the Last Glacial Age[J]. Marine Geology & Quaternary Geology,2006,26(1):101-108.]
[10] 胡亚萍,贾玉连,张智，等.粒度揭示的末次间冰期以来长江中游风沙-风尘体系[J].中国沙漠,2013,33(5):1324-1332.[HU Yaping,JIA Yulian,ZHANG Zhi,et al. The sand-loess system in the middle reach of Yangtze River since late interglacial indicated by grain size[J].Journal of Desert Research, 2013,33(5):1324-1332.]
[11] 张智,贾玉连,彭学敏,等.赣北鄱阳湖地区黄土元素地球化学特征研究[J].长江流域资源与环境,2014,23(8):1125-1131.[ZHANG zhi,JIA Yulian,PENG Xueming, et al.The study of chemical weathering in north Poyang Lake region[J].Resource Sand Environment in the Yangtze Basin,2014,23(8):1125-1131.]
[12] 彭学敏,贾玉连,胡亚萍,等.赣北芙蓉-周溪断面下蜀黄土粒度特征及其指示意义[J].热带地理,2014,34(5):663-671.[PENG Xuemin,JIA Yulian,HU Yaping,et al. The grain-size features and significance of Xiashu Loess Profile of Furong-Zhouxi in the north of Jiangxi Province[J].Tropical Geography,2014,34(5):663-671.]
[13] 吴艳宏,羊向东,王苏民.鄱阳湖地区晚更新世古环境变迁[J].地质力学学报,1997,3(4):69-66.[WU Yanghong,YANG Xiangdong,WANG Sumin. Environmental change in the Poyang Lake area during late-pleistocene[J].Journal of Geomechanics,1997,3(4):69-76.]
[14] 龙进,贾玉连,张智,等.末次冰期以来鄱阳湖东北缘下蜀黄土常量元素地球化学特征及其物源指[J].沉积学报,2015,33(5):932-940.[LONG jin,JIA yulian,ZHANG Zhi，et al.Geochemical characteristics of Loess from northeast of Poyang Lake since Last Glacial and its provenance implications[J]. Acta Sedimentologica Sinica, 2015,33(5):932-940.]
[15] MUHS D R，BETTIS III, E A.geochemical variations in Peoria Loess of western Iowa indicate paleowinds of midcontinental north America during Last Glaciation[J]. Quaternary Research,2000,53(1):49-61.
[16] MUHS D R, BETTIS III, E A.Quaternary loess-paleosol sequences as examples of climate-driven sedimentary extremes[J]. The Geological Society of America,2003,370:53-74.
[17] WINTLE A G ,MURRAY A S. A review of quartz optically stimulated luminescence characteristics and their relevance in single-aliquot regeneration dating protocols[J]. Radiation Measurements,2006,41(4):369-391.
