DOI: 10.1016/j.quascirev.2013.08.002
Scopus记录号: 2-s2.0-84884584102
论文题名: Deposition and weathering of Asian dust in Paleolithic sites, Korea
作者: Jeong G.Y. ; Choi J.-H. ; Lim H.S. ; Seong C. ; Yi S.B.
刊名: Quaternary Science Reviews
ISSN: 2773791
出版年: 2013
卷: 78 起始页码: 283
结束页码: 300
语种: 英语
英文关键词: Asian dust
; Brown clay-silt
; Geochemistry
; Grain size
; K-Ar Isotope
; Korea
; Microtextures
; Mineralogy
; Paleolithic
; Weathering
Scopus关键词: Asian dust
; Brown clay-silt
; Grain size
; Korea
; Micro texture
; Paleolithic
; Climate change
; Deposits
; Dust
; Geochemistry
; Grain size and shape
; Isotopes
; Lithology
; Mineralogy
; Minerals
; Sediments
; Silt
; Stratigraphy
; Weathering
; climate change
; deposition
; dust
; fluvial deposit
; grain size
; paleoenvironment
; Paleolithic
; silt
; stratigraphy
; Asia
; Korea
英文摘要: Paleolithic stone artifacts in Korea typically occur in brown clay-silt (BCS) sequences. The origin and depositional environment of these sequences are important for reconstructing the paleoenvironment as well as for establishing chronologies of artifact-bearing stratigraphic units. We investigated four BCS-bearing sections in foothills and river and marine terraces in Korea by applying quantitative mineralogical, geochemical, microtextural, and K-Ar isotopic methods. In all four sections, the lower units are colluvial and fluvial deposits strongly influenced by diverse local lithology, whereas the upper units are characterized by BCS units. Mineralogical/geochemical compositions, grain sizes, and colors converge into common properties in the upper BCS units in all sections. These common properties are consistentwith the eastward trends of increasing weathering degree and grain size fining throughout the loess-paleosol sections of the Chinese Loess Plateau (CLP). K-Ar detrital ages of the sections also converge upward into a narrow range similar to the age ranges of the loess and paleosols in the CLP. The top BCS unit in the Jeongok section, the thickest section, is underlain by an additionally weathered BCS unit, with strong red chroma indicating a change from warm to cold climate. We did not observe any clear evidence of climatic changes in other thinner sections, which may be due to a superposition of cold-stage accumulation and warm-stage deep weathering. The common properties of the BCSs in Korean sections and their relationship to the CLP loess and paleosols indicate widespread deposition of Asian dust and subsequent weathering in the late Quaternary, forming BCS sequences. In this respect, the BCS sequences investigated here are considered to be the additionally weathered equivalents of the CLP loess-paleosol sequences, having been exposed to the high annual precipitation of the Korean Peninsula. Given the wide distribution of BCS sequences at Paleolithic sites throughout the Peninsula, the findings of this study are important for the ongoing debate surrounding the depositional environments of the Paleolithic deposits, and provide a foundation for the establishment of the chronological framework of the Paleolithic artifact-bearing layers and lithic assemblages. © 2013 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/60493
Appears in Collections: 过去全球变化的重建
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作者单位: Department of Earth and Environmental Sciences, Andong National University, Songchondong, Andong 760-749, South Korea; Division of Earth and Environmental Science, Korea Basic Science Institute, Chungbuk 363-883, South Korea; Department of Isotope Geochemistry, University of Science and Technology, Daejeon 305-350, South Korea; Department of Geological Sciences, Pusan National University, Busan 609-735, South Korea; Department of History, Kyunghee University, Seoul 130-701, South Korea; Department of Archaeology and Art History, Seoul National University, Seoul 151-742, South Korea
Recommended Citation:
Jeong G.Y.,Choi J.-H.,Lim H.S.,et al. Deposition and weathering of Asian dust in Paleolithic sites, Korea[J]. Quaternary Science Reviews,2013-01-01,78