巴丹吉林查格勒布剖面记录的150 ka BP以来的常量化学元素波动

摘要/Abstract

摘要： 巴丹吉林沙漠查格勒布剖面150 ka BP以来存在25个由风成沙丘砂与黄土、古土壤、湖相和冲坡积砂土砾石层构成的沉积旋回。剖面常量化学元素分析显示:湖相、黄土和古土壤中的Al2O3、Fe2O3+FeO、CaO、MgO、K2O、Na2O和TiO含量基本上高于风成沙丘砂,而SiO2则呈相反变化,构成了与沉积旋回相应的150 ka BP以来25个元素变化旋回。剖面中各元素的这种分布和集散规律也与元素的富集系数和淋失系数波动一致。研究表明,暖湿气候作用下稳定性元素Al2O3、TOFe、TiO和非稳定性元素CaO、MgO、Na2O、K2O都能相对富集,与剖面所处的特殊的洼地地貌位置有关。常量化学元素的综合分析表明,这种元素变化旋回是由巴丹吉林沙漠晚更新世以来的干寒多风与温湿至暖湿气候变化所致,其根本原因与冰期、间冰期气候波动影响下东亚冬夏季风的“拉锯式”摆动有关。

关键词: 查格勒布剖面, 150 ka BP, 常量化学元素, 元素旋回, 古气候

Abstract: There are 25 sedimentary cycles that are made up of aeolian palaeo-dune sands,loess,palaeosol,lacustrine facies and alluvial-hillslope sandy soils and gravels in Chagelebu section. The analysis of the main chemical elements in the section shows that the contents of Al2O3, Fe2O3+FeO, CaO, MgO, K2O, Na2O and TiO in the lacustrine facies, loess and palaeosol are higher than those in the aeolian palaeo-dune sands, but the contents of the SiO2 take on converse change. It constitutes 25 element-change cycles corresponding with above-mentioned sedimentary cycles since 150 ka BP. The regulation of distribution, gathering and migration of each element in the section are corresponding with the fluctuations of its gathering coefficient and leach coefficient. The study shows that stable elements Al2O3,Fe2O3+FeO,TiO and unstable elements CaO,MgO,Na2O,K2O can both gather together in the warm and humid climate, and that have to do with its special low-lying depression. The comprehensively analysis of the main chemical elements indicates that the element-change cycles result from the dry-cold, windy and mild-humid to warm-humid climate-change since the late Pleistocene, Badain Jaran Desert. The essential reason bears relationship with the back and force swing of the East Asia winter monsoon and summer monsoon influenced by climatic vicissitudes during glacial and interglacial period.

Key words: Chagelebulu section, 150 ka BP, main chemical element, element cycle, palaeo-climate

中图分类号:

P532

李云卓, 李保生, 高全洲, 靳鹤龄. 巴丹吉林查格勒布剖面记录的150 ka BP以来的常量化学元素波动[J]. 中国沙漠, 2005, 25(1): 8-14.

LI Yun-zhuo, LI Bao-sheng, GAO Quan-zhou, JIN He-ling. Fluctuations of Main Chemical Elements since 150 ka BP as Indicated in Chagelebulu Stratigraphical Section, Badain Jaran Desert[J]. JOURNAL OF DESERT RESEARCH, 2005, 25(1): 8-14.

参考文献

[1]于守忠,李博,蔡蔚祺. 内蒙古西部戈壁及巴吉林沙漠考察[J]. 治沙研究,1962,(3):96-107.

[2]楼桐茂. 甘肃民勤至巴丹吉林庙间沙漠成因及其改造利用[J].治沙研究,1962,(3):90-95.

[3]潭见安.内蒙古阿拉善荒漠的地方类型[J].地理集刊,1964,(8):1-31.

[4]朱震达,吴正,刘恕,等.中国沙漠概论[M].北京:科学出版社,1980.68-76.

[5]王涛.巴丹吉林沙漠形成演变的若干问题[J].中国沙漠, 1990,10(1):29-40.

[6]Yang Xiaoping. Geomorphologische Untersuchungen in Trockenrumen NW-Chinas unter besonderer Berücksichtigung Von Badanjilin und Takelamagan[J]. Gttinger Geogra.Abh,1991,96:1-36.

[7]高全洲,董光荣,李保生,等.晚更新世以来巴丹吉林南缘地区沙漠演化[J].中国沙漠,1995,15（4）:345-352.

[8]安芷生,吴锡浩,王品先,等.最近130 ka中国的古季风——I.古季风记录[J].中国科学（B辑）,1991,（10）: 1076-1081.

[9]Liu T S,Ding Z L. Stepwise coupling of monsoon circulations to global ice Volume Variations during the late Cenozoic[J].Global and Planetary Change,1993,7:119-130.

[10]吕玉晓,李保生,靳鹤龄,等.萨拉乌苏河流域末次间冰期全球变化区域响应的主元素记录[J].中国沙漠,2004,24（2）:136-143.

[11]Ding Z L, Liu T S, Rutter N W, et al. Ice-volume forcing of East Asian Ainter Monsoon Variation in the past 800 000 years[J].Quarternary Reaserch, 1995,44:149-159.

[12]高全洲,董光荣,李保生.查格勒布鲁——晚更新世以来东亚季风进退的地层记录[J].中国沙漠, 1996, 16(2): 112-119.

[13]李保生,吴正, Zhang Daviddian.中国季风沙区晚更新世以来环境及其变化[J].地质学报,2001,75(1):127-137.

[14]刘东生,等. 黄土与环境[M]. 北京:科学出版社, 1985.

[15]陈发虎,张维信. 甘青地区的黄土地层学与第四纪冰川问题[M]. 北京:科学出版社,1993. 9-46.

[16]李保生,靳鹤龄,吕海燕. 150 ka以来毛乌素沙漠的堆积与变迁过程[J]. 中国科学(D),1998,28(1):85-90.

[17]李保生,董光荣,吴正.我国北方上更新统城川组的建立[J].地质论评,1993,39(2):91-100.

[18]李保生,董光荣,高尚玉. 萨拉乌苏河地区第四纪地层中的碎屑矿物及其反映的中更新世末期以来的环境变化[J]. 岩石矿物学杂志,1991,10(1):84-90.

[19]关有志,陈振英,贾惠兰. 萨拉乌苏河地区第四纪地层中的元素分析与古气候[J].中国沙漠,1986,6(1):32 -35.

[20]Li Baosheng, Zhang Daviddian, Jin Heling, et al. Paleo-monsoon activities of Mu Us Desert, China since 150 ka BP—a study of the stratigraphic sequences of the Milanggouwan Section, Salawusu River area[J]. Paleogeography, Paleoclimatology,Paleoecology,2000,162:1-16.

[21]高尚玉,董光荣,李保生. 萨拉乌苏河第四纪地层中化学元素迁移和聚集与古气候的关系[J]. 地球化学,1985,(3):269-275.