气候变化领域集成服务门户(CCPortal): Depositional and post-depositional processes in human-modified cave contexts of west-central Patagonia (Southernmost South America)

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DOI	10.1016/j.palaeo.2019.109268
	Depositional and post-depositional processes in human-modified cave contexts of west-central Patagonia (Southernmost South America)
	Ozán I.L.; Méndez C.; Oriolo S.; Orgeira M.J.; Tripaldi A.; Vásquez C.A.
发表日期	2019
ISSN	0031-0182
卷号	532
英文摘要	This contribution aims to analyse depositional and post-depositional processes from two volcanic caves (Baño Nuevo 1 and Cueva de la Vieja) from west-central Patagonia, in order to evaluate if natural and anthropogenic processes recorded therein are representative of basin-scale processes. For this purpose, geomorphological, sedimentological, micromorphological, petrographic, magnetic, paleontological and archaeological data are integrated. Results allow correlating the Baño Nuevo 1 and Cueva de la Vieja sequences, comprising a record of ca. 19,000 years. In the first place, the distinction between endogenous and exogenous detritus input, mainly recorded by the mineralogy and lithotypes, provided environmental data related to landscape stability (i.e., vegetation cover). The latter, in turn, could be interpreted as part of a complex feedback associated with major climatic changes. On the other hand, cave weathering rates observed through vertical variations of the gravel fraction, along with bioactivity recorded by percentages of Total Organic Carbon and micromorphological analysis, provided constraints on temperature and/or humidity, being in agreement with available regional information. Main regional palaeoenvironmental changes observed in the sequences were the deglaciation processes, the Pleistocene-Holocene transition, the Holocene amelioration and the Anthropocene. Although no distinctive variations were observed within Holocene deposits, biological processes mainly resultant of the human occupations could have obliterated such finer scale distinctions. © 2019 Elsevier B.V.
英文关键词	Archaeology; Diagenesis; Palaeoenvironment; Pleistocene-Holocene; Volcanic caves
语种	英语
scopus关键词	Anthropocene; archaeology; bioactivity; cave deposit; climate variation; deglaciation; diagenesis; historical record; humidity; micromorphology; paleoenvironment; Pleistocene-Holocene boundary; remediation; temperature; total organic carbon; Patagonia
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/150845
作者单位	Instituto de Geociencias Básicas, Aplicadas y Ambientales de Buenos Aires, Universidad de Buenos Aires, Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Departamento de Ciencias Geológicas, Ciudad Universitaria, Buenos Aires C1428EGA, Argentina; Centro de Investigación en Ecosistemas de la Patagonia, José de Moraleda 16, Coyhaique, Aisén, Chile
推荐引用方式 GB/T 7714	Ozán I.L.,Méndez C.,Oriolo S.,et al. Depositional and post-depositional processes in human-modified cave contexts of west-central Patagonia (Southernmost South America)[J],2019,532.
APA	Ozán I.L.,Méndez C.,Oriolo S.,Orgeira M.J.,Tripaldi A.,&Vásquez C.A..(2019).Depositional and post-depositional processes in human-modified cave contexts of west-central Patagonia (Southernmost South America).Palaeogeography, Palaeoclimatology, Palaeoecology,532.
MLA	Ozán I.L.,et al."Depositional and post-depositional processes in human-modified cave contexts of west-central Patagonia (Southernmost South America)".Palaeogeography, Palaeoclimatology, Palaeoecology 532(2019).