Characteristic grain-size component - A useful process-related parameter for grain-size analysis of lacustrine clastics?

doi:10.1016/j.quaint.2017.07.027

	Characteristic grain-size component - A useful process-related parameter for grain-size analysis of lacustrine clastics?
	Friedrich, O (Friedrich, Oliver)3; Lu, Y (Lu, Yin)1,2,6; Fang, XM (Fang, Xiaomin)1,2; Song, CH (Song, Chunhui)4,5
刊名	QUATERNARY INTERNATIONAL
	2018-06-20
卷号	479 期号:特刊 SI 页码:90-99
关键词	NE TIBETAN PLATEAU WESTERN QAIDAM BASIN LAKE DONGGI CONA CLIMATE-CHANGE DEPOSITIONAL PROCESSES TRANSPORT PROCESSES LEVEL STATUS SEDIMENTS RECORD MONSOON
ISSN号	1040-6182
DOI	10.1016/j.quaint.2017.07.027
英文摘要	Lacustrine sediments are important archives for paleoclimate reconstructions. The application of grainsize analysis as palaeoclimatic proxy in lacustrine clastics is valuable but also difficult because the typical polymodal grain-size distribution in these clastics. To better understand the grain-size distribution of lacustrine clastics and to promote the application of grain size in paleoenvironmental interpretation, this study investigates lacustrine clastics from northern and southern China. The grain-size distribution of these sediments was decomposed by log-normal distribution function fitting method. Based on the results, and drawing upon the concept of paleomagnetic demagnetization and " Characteristic Remnant Magnetization" from paleomagnetism, a conceptual system has been established and defined for grainsize distribution analysis. The system is composed of four components: (I) Characteristic Grain Size Component (ChGSC), (II) Affiliated Grain Size Component, (III) Meaningful Grain Size Component, and (IV) Combination Feature of Grain Size Components (CFGSCs). Based on the proposed system, ChGSC and CFGSCs were used to detect the grain-size distribution of clastics from the different lake zones investigated. Our results show the number, modal size, and percentage of ChGSC(s) in grain-size distributions are sensitive to changes in the lacustrine environment. The ChGSC(s) mirrors the dominant depositional process and hydrodynamic conditions. The modal size of ChGSC(s) is more sensitive to hydrological conditions than the widely used mean grain-size approach. Thus, the ChGSC(s) provide a useful processrelated parameter for paleoenvironmental reconstructions. To test this promising application, we applied this approach to a deep drill core from the Qaidam Basin in the northeastern Tibetan Plateau. (C) 2017 Elsevier Ltd and INQUA. All rights reserved.
WOS研究方向	Physical Geography ; Geology
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000433225600012
内容类型	期刊论文
源URL	[http://ir.itpcas.ac.cn/handle/131C11/8623]
专题	青藏高原研究所_图书馆
作者单位	1.Chinese Acad Sci, CAS Ctr Excellence Tibetan Plateau Earth Sci, Inst Tibetan Plateau Res, Beijing 100101, Peoples R China; 2.Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Continental Collis & Plateau Uplift, Beijing 100101, Peoples R China; 3.Heidelberg Univ, Inst Earth Sci, Sedimentol & Marine Paleoenvironm Dynam Grp, Neuenheimer Feld 234-236, D-69120 Heidelberg, Germany; 4.Lanzhou Univ, Sch Earth Sci, Lanzhou 730000, Gansu, Peoples R China; 5.Lanzhou Univ, Key Lab Western Chinas Mineral Resources Gansu Pr, Lanzhou 730000, Gansu, Peoples R China; 6.Heidelberg Univ, Inst Earth Sci, Sedimentol & Marine Paleoenvironm Dynam Grp, Heidelberg, Germany.
推荐引用方式 GB/T 7714	Friedrich, O ,Lu, Y ,Fang, XM ,et al. Characteristic grain-size component - A useful process-related parameter for grain-size analysis of lacustrine clastics?[J]. QUATERNARY INTERNATIONAL,2018,479(特刊 SI):90-99.
APA	Friedrich, O ,Lu, Y ,Fang, XM ,&Song, CH .(2018).Characteristic grain-size component - A useful process-related parameter for grain-size analysis of lacustrine clastics?.QUATERNARY INTERNATIONAL,479(特刊 SI),90-99.
MLA	Friedrich, O ,et al."Characteristic grain-size component - A useful process-related parameter for grain-size analysis of lacustrine clastics?".QUATERNARY INTERNATIONAL 479.特刊 SI(2018):90-99.