Vegetation landscape at DK locality, Olduvai Gorge, Tanzania

Vegetation landscape at DK locality, Olduvai Gorge, Tanzania
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坦桑尼亚奥杜瓦伊峡谷 DK 地区的植被景观

DOI:
10.1016/j.palaeo.2015.02.022
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发表时间:
2015
期刊:
Palaeogeography, Palaeoclimatology, Palaeoecology
影响因子:
--
通讯作者:
Rodríguez-Cintas
Rodríguez-Cintas
中科院分区:
--
文献类型:
--
作者:
Albert;Bamford;Stanistreet;Stollhofen;Rivera-Rondón;Rodríguez-Cintas

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位于坦桑尼亚北方的奥杜威峡谷古人类学遗址涵盖了大约200万年的地球历史。Palaeolake Olduvai的沉积相已被用于重建湖泊海侵和海退,直到完全干涸,解释为反映湿/干气候周期。虽然在过去的几十年中进行了多学科的研究,以重建峡谷的古环境和古景观,很少有集中在DK网站位于约2公里远的峡谷。我们在这里提出了一个植被研究在DK的第一层,最古老的地层,基于植硅石和硅藻恢复的玄武岩熔岩凝灰岩IB地层间隔。分析了这些结果与它们出现的不同相的关系:桑迪杂岩、砂岩、桑迪蜡质粘土岩、蜡质粘土岩和桑迪泥岩。植硅石结果杂混岩样品表明,在这些更干旱的时期类似的植被组成。相反,含蜡粘土岩和桑迪含蜡粘土岩样品在植被组成上表现出较高的多样性。硅藻表明是淡水池环境。因此,DK遗址可能为人类提供了植物食物,比如树木和灌木的果实,莎草和芦苇富含淀粉的根茎和块茎。总体而言,在DK网站的结果呈现出不同的植被景观相比,以前发表的植硅体结果从其他奥杜威地层水平和地区。
The Olduvai Gorge palaeoanthropological site, in northern Tanzania, encompasses about two million years of earth history. The sedimentary facies of Palaeolake Olduvai have been used to reconstruct lake transgressions and regressions, up to total drying out, interpreted to reflect wet/dry climate cycles. Although multidisciplinary research has been conducted during the past decades to reconstruct the palaeoenvironments and palaeolandscapes of the Gorge, very few focused on the DK site located about 2 km farther east in the Gorge. We present here a vegetation study at DK for Bed I, the oldest stratum, based upon the phytolith and diatom recovery of the basalt lava to Tuff IB stratigraphic interval. These results have been analysed in relation to the different facies in which they occur: sandy diamictite, sandstone, sandy waxy claystone, waxy claystone, and sandy diatomite. The phytolith results from diamictite samples indicate a similar vegetation composition during these more arid periods. Conversely, waxy claystone and sandy waxy claystone samples show a higher diversity in the vegetation composition. The diatoms were indicative of a fresh water pool environment. Thus the DK site would have provided plant foods for hominins, such as fruits from trees and shrubs and starch-rich rhizomes and tubers from sedges and reeds. Overall, the results at DK site present a different vegetation landscape in comparison to previously published phytolith results from other Olduvai stratigraphic levels and regions.
早期人类时代的精细分辨率,坦桑尼亚奥杜瓦伊峡谷的床 I 和 II。
DOI: 10.1016/j.jhevol.2012.03.001
发表时间: 2012
影响因子: 3.2
作者:
I. Stanistreet
通讯作者: I. Stanistreet
DOI: --
发表时间: 2006
影响因子: 2.3
作者:
José Iriarte
通讯作者: José Iriarte
最近对奥杜瓦伊峡谷 DK 遗址的奥杜瓦人和相关原始人遗骸进行的调查结果:一项保护活动
DOI: --
发表时间: 2013
期刊:
影响因子: --
作者:
F. Masao;S. Antón;J. Njau
通讯作者: J. Njau
坦桑尼亚奥杜瓦伊峡谷上床层 I 和下层床 II 的上更新世环境
DOI: 10.1016/0031-0182(84)90043-9
发表时间: 1984
期刊: Palaeogeography, Palaeoclimatology, Palaeoecology
影响因子: --
作者:
Jack Kappelman
通讯作者: Jack Kappelman
坦桑尼亚奥杜瓦伊峡谷半干旱淡水湿地相模型
DOI: --
发表时间: 2003
期刊:
影响因子: --
作者:
C. M. Liutkus;G. Ashley
通讯作者: G. Ashley