气候变化领域集成服务门户(CCPortal): Core stratigraphy constrains Bed IV archaeological record at HEB site; Olduvai Gorge; Tanzania

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DOI	10.1016/j.palaeo.2020.109773
	Core stratigraphy constrains Bed IV archaeological record at HEB site; Olduvai Gorge; Tanzania
	Njau J.K.; Herrmann E.W.; Ruck L.; Pante M.; Farrugia P.; Toth N.; Schick K.; Stollhofen H.; Stanistreet I.G.
发表日期	2020
ISSN	0031-0182
卷号	552
英文摘要	The Olduvai Gorge deposits contain a rich archaeological record documenting the evolution of hominin behavior over the last 2 million years. While archaeological assemblages in the lower sedimentary layers (Beds I-II) are well preserved in relatively secure chronostratigraphic contexts, the age of overlying beds is poorly constrained due to discontinuous exposures and lack of marker horizons, abundant erosional contacts and lack of unweathered, dateable material. As a result, Beds III-IV and the Masek Beds, have yet received little attention compared to the underlying beds. Recently, the Olduvai Gorge Coring Project (OGCP) acquired high resolution, stratigraphically continuous sedimentary cores of Palaeolake Olduvai through scientific drilling, in order to improve the geological and palaeoenvironmental contexts of the hominin record. While other studies reported in this volume have used palaeoenvironmental datasets from the cores to refine the Beds I-II records, this study combines outcrop and core stratigraphic methods to improve the chronology of Bed IV archaeological sites. Our recent excavation at HEB site demonstrates the importance of this approach to improve the stratigraphic positioning and relative age of Bed IV archaeological materials. Our results suggest that the HEB site is younger than previously thought because it was formed after depositional fill of an incised valley, which substantially removed much of lowermost Bed IV in the HEB area. The lithofacies at this site indicate lake expansion and development of Ngorongoro Highland sourced braided streams near the lakeshore at this time, which coincided with rich assemblages of artifacts, fossil fauna, and bones bearing butchery marks. This setting likely afforded a variety of resources to hominins including potable water, raw materials, refuge trees, and animal food, making HEB an important site for inferring the cultural and feeding behaviors of Homo erectus. © 2020 Elsevier B.V.
英文关键词	Acheulean; Cut marks; Evolution; Hominin; Homo erectus
语种	英语
scopus关键词	biostratigraphy; bone; drilling; fossil assemblage; geochronology; hominid; lithofacies; Olduvai event; outcrop; refuge; sedimentary sequence; Arusha [Tanzania]; Ngorongoro; Olduvai Gorge; Tanzania; Animalia; Homo erectus
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/150466
作者单位	Department of Earth and Atmospheric Sciences, Indiana University, 1001 East Tenth Street, Bloomington, IN 47405-1405, United States; The Stone Age Institute, 1392 W. Dittemore Rd., Bloomington, IN 47407-5097, United States; Department of Anthropology, Indiana University, 702 E Kirkwood Ave., Bloomington, IN 47405-1405, United States; Department of Anthropology, Colorado State University, 1787 campus delivery, Fort Collins, CO 80524, United States; GeoZentrum Nordbayern, Friedrich-Alexander-University (FAU) Erlangen-Nürnberg, Schloßgarten 5, Erlangen, 91054, Germany; Department of Earth, Ocean and Ecological Sciences, University of Liverpool, Brownlow Street, PO Box 147, Liverpool, L69 3GP, United Kingdom
推荐引用方式 GB/T 7714	Njau J.K.,Herrmann E.W.,Ruck L.,et al. Core stratigraphy constrains Bed IV archaeological record at HEB site; Olduvai Gorge; Tanzania[J],2020,552.
APA	Njau J.K..,Herrmann E.W..,Ruck L..,Pante M..,Farrugia P..,...&Stanistreet I.G..(2020).Core stratigraphy constrains Bed IV archaeological record at HEB site; Olduvai Gorge; Tanzania.Palaeogeography, Palaeoclimatology, Palaeoecology,552.
MLA	Njau J.K.,et al."Core stratigraphy constrains Bed IV archaeological record at HEB site; Olduvai Gorge; Tanzania".Palaeogeography, Palaeoclimatology, Palaeoecology 552(2020).