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DOI	10.1016/j.palaeo.2020.109904
	Lake Elji and a geological perspective on the evolution of Petra; Jordan
	Abu-Jaber N.; Al Khasawneh S.; Alqudah M.; Hamarneh C.; Al-Rawabdeh A.; Murray A.
发表日期	2020
ISSN	0031-0182
卷号	557
英文摘要	The draining of the herein introduced ancient Lake Elji, and the subsequent erosion of its lacustrine sediments, were necessary precursors to the Late Epipalaeolithic (Natufian) and later settlement of Petra. This study investigates this geological history and relates it to human occupation of the broader region. Widespread carbonates consisting of algal mat deposits, beach rocks, and rhizoliths are consistently present at the 1060 m contour line of what is believed to be the shoreline of Lake Elji in the Petra basin. Well sorted siliciclastic fluvio-lacustrine sediments at lower elevations and human settlement patterns all indicate that a standing body of water once existed in the area. Stable isotopes of carbon and oxygen, as well as the fossil assemblages and the textures of the carbonate deposits, suggest that the body of water was an open lake with regular outflows. A sill has been identified at Ras Btahi, indicating a southward outflow direction, as opposed to the current drainage pattern towards the west. The lack of a basin closure towards the west at the time, as evidenced by thick, low energy sediment accumulations, suggest that tectonic movements were responsible for breaching the lake and establishing the current hydrological pattern. Results obtained from the optical stimulated luminiscence (OSL) in the palaeolake sediments indicate that the basin was closed from at least 100 Ka up to approximately 9 Ky. This timeline is also supported by the distribution of archaeological sites in the area and a previously documented massive erosional event at the end of this period. Subsequent gradual denudation of the basin sediments allowed for the settlement in the center of Petra during the Early Nabatean period. © 2020 Elsevier B.V.
英文关键词	Holocene; Jordan; Palaeogeography; Petra; Pleistocene; Tectonics
语种	英语
scopus关键词	algal mat; basin evolution; dating method; evolution; fossil assemblage; geological record; human settlement; lacustrine deposit; Pleistocene-Holocene boundary; rhizolith; siliciclastic deposit; Jordan; algae
来源期刊	Palaeogeography, Palaeoclimatology, Palaeoecology
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/150363
作者单位	Center for the Study of Natural and Cultural Heritage, German Jordanian University, Amman, Jordan; Department of Conservation and Management of Cultural Resources, Yarmouk University, Irbid, Jordan; Department of Earth and Environmental Sciences, Yarmouk University, Irbid, Jordan; German Protestant Institute of Archaeology in Amman, Amman, Jordan; Department of Earth and Environmental Sciences, Applied Geoinformatics Laboratory, Yarmouk University, Irbid, Jordan; Department of Geoscience, Aarhus University, DTU Risø Campus, Roskilde, 4000, Denmark
推荐引用方式 GB/T 7714	Abu-Jaber N.,Al Khasawneh S.,Alqudah M.,et al. Lake Elji and a geological perspective on the evolution of Petra; Jordan[J],2020,557.
APA	Abu-Jaber N.,Al Khasawneh S.,Alqudah M.,Hamarneh C.,Al-Rawabdeh A.,&Murray A..(2020).Lake Elji and a geological perspective on the evolution of Petra; Jordan.Palaeogeography, Palaeoclimatology, Palaeoecology,557.
MLA	Abu-Jaber N.,et al."Lake Elji and a geological perspective on the evolution of Petra; Jordan".Palaeogeography, Palaeoclimatology, Palaeoecology 557(2020).