globalchange  > 气候变化与战略
DOI: 10.1073/pnas.2004532117
论文题名:
Microbial biomarkers reveal a hydrothermally active landscape at Olduvai Gorge at the dawn of the Acheulean; 1.7 Ma
作者: Sistiaga A.; Husain F.; Uribelarrea D.; Martín-Perea D.M.; Ferland T.; Freeman K.H.; Diez-Martín F.; Baquedano E.; Mabulla A.; Domínguez-Rodrigo M.; Summons R.E.
刊名: Proceedings of the National Academy of Sciences of the United States of America
ISSN: 0027-8424
出版年: 2020
卷: 117, 期:40
起始页码: 24720
结束页码: 24728
语种: 英语
英文关键词: Biomarkers ; Hydrothermalism ; Olduvai Gorge ; Paleoenvironment ; Thermophiles
Scopus关键词: biological marker ; animal ; archeology ; bacterium ; chemistry ; classification ; ecosystem ; evolution ; genetics ; hominid ; metabolism ; microflora ; paleontology ; physiology ; Animals ; Archaeology ; Bacteria ; Biological Evolution ; Biomarkers ; Ecosystem ; Hominidae ; Microbiota ; Paleontology
英文摘要: Landscape-scale reconstructions of ancient environments within the cradle of humanity may reveal insights into the relationship between early hominins and the changing resources around them. Many studies of Olduvai Gorge during Pliocene-Pleistocene times have revealed the presence of precession-driven wet-dry cycles atop a general aridification trend, though may underestimate the impact of local-scale conditions on early hominins, who likely experienced a varied and more dynamic landscape. Fossil lipid biomarkers from ancient plants and microbes encode information about their surroundings via their molecular structures and composition, and thus can shed light on past environments. Here, we employ fossil lipid biomarkers to study the paleolandscape at Olduvai Gorge at the emergence of the Acheulean technology, 1.7 Ma, through the Lower Augitic Sandstones layer. In the context of the expansion of savanna grasslands, our results represent a resourcerichmosaic ecosystempopulated by groundwater-fed rivers, aquatic plants, angiospermshrublands, and edible plants. Evidence of a geothermally active landscape is reported via an unusual biomarker distribution consistent with the presence of hydrothermal features seen today at Yellowstone National Park. The study of hydrothermalism in ancient settings and its impact on hominin evolution has not been addressed before, although the association of thermal springs in the proximity of archaeological sites documented here can also be found at other localities. The hydrothermal features and resources present at Olduvai Gorge may have allowed early hominins to thermally process edible plants and meat, supporting the possibility of a prefire stage of human evolution. © 2020 National Academy of Sciences. All rights reserved.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/164013
Appears in Collections:气候变化与战略

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作者单位: Sistiaga, A., Department of Earth Atmospheric and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, MA 02139, United States, GLOBE Institute, University of Copenhagen, Copenhagen, 1350, Denmark; Husain, F., Department of Earth Atmospheric and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, MA 02139, United States; Uribelarrea, D., Institute of Evolution in Africa (IDEA), University of Alcalá, Madrid, 28010, Spain, Geodynamics Stratigraphy and Palaeontology Department, Complutense University of Madrid, Madrid, 28040, Spain; Martín-Perea, D.M., Institute of Evolution in Africa (IDEA), University of Alcalá, Madrid, 28010, Spain, Geodynamics Stratigraphy and Palaeontology Department, Complutense University of Madrid, Madrid, 28040, Spain, Paleobiology Department, National Natural Sciences Museum, Consejo Superior de Investigaciones Científicas, Madrid, 28006, Spain; Ferland, T., Department of Geosciences, Pennsylvania State University, University Park, PA 16802, United States; Freeman, K.H., Department of Geosciences, Pennsylvania State University, University Park, PA 16802, United States; Diez-Martín, F., Department of Prehistory and Archaeology, Universidad de Valladolid, Valladolid, 47002, Spain; Baquedano, E., Regional Archaeological Museum, Alcalá de Henares, 28801, Spain; Mabulla, A., Department of Archaeology and Heritage Studies, University of Dar es Salaam, Dar es Salaam, 35050, Tanzania; Domínguez-Rodrigo, M., Institute of Evolution in Africa (IDEA), University of Alcalá, Madrid, 28010, Spain, Department of Philosophy and History (Area of Prehistory), University of Alcalá, Alcalá de Henares, 28801, Spain; Summons, R.E., Department of Earth Atmospheric and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, MA 02139, United States

Recommended Citation:
Sistiaga A.,Husain F.,Uribelarrea D.,et al. Microbial biomarkers reveal a hydrothermally active landscape at Olduvai Gorge at the dawn of the Acheulean; 1.7 Ma[J]. Proceedings of the National Academy of Sciences of the United States of America,2020-01-01,117(40)
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