Arid
DOI10.1016/j.sedgeo.2017.03.011
A late Pleistocene linear dune dam record of aeolian-fluvial dynamics at the fringes of the northwestern Negev dunefield
Roskin, Joel1,2,3,4; Bookman, Revital4; Friesem, David E.5; Vardi, Jacob6
通讯作者Roskin, Joel
来源期刊SEDIMENTARY GEOLOGY
ISSN0037-0738
EISSN1879-0968
出版年2017
卷号353页码:76-95
英文摘要

A late Pleistocene aeolian-fluvial record within a rare vegetated linear dune-like structure at the fringe of the northwestern Negev dunefield, Israel, provides direct evidence of dune-damming dynamics within the structure and its environs. Study methods included high resolution morphology and stratigraphy, micromorphology and sedimentological analyses. Chronology was based on eight archaeological sites from the structure and the INQUA Dune Atlas chronologic database. Low-energy fine-grained fluvial deposits underlying the structure and extending from its flanks indicate deposition by low energy hyper-concentrated flows in a floodplain environment and later in water bodies that formed by dune-damming of a mid-sized drainage basin. Interbedded sand with fine-grained deposits within the linear structure indicates interchanging dominances between aeolian sand incursion and seasonal floods. Sand deposition during dune elongation led to structure growth and dune damming of its drainage system that in turn formed water bodies and upstream fine-grained deposition following seasonal floods. Calculations of current sediment yields indicate that fine-grained deposits accretion up to the structure’s brim could possibly have rapidly occurred over a total time span of decades. However, artifacts dating to the Geometric Kebaran (-17.5-12.9 cal kyr BP) and Harifian (12.9-11.2 cal kyr BP) archaeological periods on the structure’s surface indicates intermittent, repetitive, and short-term camping, utilizing adjacent water bodies over a time period of 4000-5000 years. Fluctuating high winds and precipitation during a time window of increased fluvial availability of fine-grained sediment from the hinterland generated ample fine-grained deposition. After-11 cal kyr BP, the abundance and recurrence of dammed water bodies decreased when reduced wind power constrained dune-dam maintenance. After sediment accommodation space dissipated, fluvial flow of the drainage basin led to dune-dam destruction and partial fluvial erosion of the fine-grained deposits that continues today. (C) 2017 Elsevier B.V. All rights reserved.


英文关键词Aeolian-fluvial interactions Vegetated linear dune dam Stratigraphy Late Pleistocene-Holocene transition Epipalaeolithic Dunefield margins
类型Article
语种英语
国家Israel ; England
收录类别SCI-E
WOS记录号WOS:000401392000006
WOS关键词SAHARAN DUST DEPOSITS ; GEOCHEMICAL EVIDENCE ; CANARY-ISLANDS ; EOLIAN SAND ; DESERT ; HIGHLANDS ; ISRAEL ; LOESS ; VEGETATION ; CLIMATE
WOS类目Geology
WOS研究方向Geology
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/202397
作者单位1.Univ Haifa, Charney Sch Marine Studies, Dept Maritime Civilizat, IL-31905 Haifa, Israel;
2.Univ Haifa, Leon Recanati Inst Maritime Studies RIMS, IL-31905 Haifa, Israel;
3.Achva Acad Coll, Sch Sci, Arugot, Israel;
4.Univ Haifa, Charney Sch Marine Studies, Dept Marine Geosci, IL-31905 Haifa, Israel;
5.Univ Cambridge, McDonald Inst Archaeol Res, Downing St, Cambridge CB2 3ER, England;
6.Israel Antiqu Author, Excavat Surveys & Res Dept, Prehist Branch, Jerusalem, Israel
推荐引用方式
GB/T 7714
Roskin, Joel,Bookman, Revital,Friesem, David E.,et al. A late Pleistocene linear dune dam record of aeolian-fluvial dynamics at the fringes of the northwestern Negev dunefield[J],2017,353:76-95.
APA Roskin, Joel,Bookman, Revital,Friesem, David E.,&Vardi, Jacob.(2017).A late Pleistocene linear dune dam record of aeolian-fluvial dynamics at the fringes of the northwestern Negev dunefield.SEDIMENTARY GEOLOGY,353,76-95.
MLA Roskin, Joel,et al."A late Pleistocene linear dune dam record of aeolian-fluvial dynamics at the fringes of the northwestern Negev dunefield".SEDIMENTARY GEOLOGY 353(2017):76-95.
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