DOI: 10.1016/j.gloplacha.2015.04.005
论文题名: A multiproxy approach for the reconstruction of ancient continental environments. The case of the Mio-Pliocene deposits of the Granada Basin (southern Iberian Peninsula)
作者: García-Alix A.
刊名: Global and Planetary Change
ISSN: 0921-8181
出版年: 2015
卷: 131 起始页码: 1
结束页码: 10
语种: 英语
英文关键词: Isotope geochemistry
; Miocene
; Palaeoenvironmetal reconstruction
; Pliocene
; Small mammals
Scopus关键词: Carbon
; Exploratory geochemistry
; Isotopes
; Carbon and oxygen isotopes
; Continental environments
; Environmental humidities
; Isotope geochemistry
; Miocene
; Palaeoenvironmental reconstruction
; Pliocene
; Small mammals
; Mammals
; environmental change
; geochemistry
; humidity
; isotopic analysis
; Mediterranean environment
; Miocene
; paleoenvironment
; Pliocene
; reconstruction
; rodent
; Andalucia
; Granada Basin
; Granada [Andalucia]
; Spain
; Mammalia
; Rodentia
英文摘要: Palaeoenvironmental reconstructions from fossil mammals are based on the straightforward relationship between the environment and the mammal assemblage living in the area. However, in some cases the environmental variables estimated from mammals are biassed by local influences. The palaeoenvironmental reconstruction of the Granada Basin (southern Spain) based on carbon and oxygen isotopes from enamel rodent teeth is compared with the palaeoenvironmental data from small mammal assemblages. Estimated temperatures from both proxies coincide, in general terms: cold-temperate conditions during the latest Tortonian (~. 16. °C; cold-temperate climate), dry sub-tropical conditions during the Messinian (16.6. °C-22. °C), and dry sub-tropical conditions during the early Pliocene (16.6. °C-17.2. °C). Reconstructed humidity trends from both proxies only agree in the first part of the record, showing dry conditions during the Tortonian-Messinian boundary and an increase in humidity at the beginning of the Messinian. During the Messinian and earliest Pliocene, humidity trends in each proxy are frequently opposed: small mammal assemblages suggest a huge increase in humidity at the beginning of the Messinian, and a decreasing trend towards the Pliocene, whereas carbon isotopes from rodent teeth suggest moderate humidity conditions during the Messinian. It can be concluded that physical changes in the landscape would affect taxa with high dependence on humid conditions, and they are more likely to record local environmental humidity changes rather than regional or global humidity ones. However, the past reconstructions of temperatures are not biassed by this effect, as the general temperature trends deduced from the faunal assemblages as well as those deduced from the isotopic approaches coincide. The general climatic trends reconstructed from isotopic analyses in small mammal teeth agree with the general environmental change in the western Mediterranean region as well as with the global evolution of sea temperatures. © 2015 Elsevier B.V.. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84929333588&doi=10.1016%2fj.gloplacha.2015.04.005&partnerID=40&md5=08fb6878f83261984ffb90b17d535a48
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/11510
Appears in Collections: 全球变化的国际研究计划 气候变化与战略
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作者单位: Department of Geographical and Earth Sciences, University of Glasgow, Glasgow, United Kingdom
Recommended Citation:
García-Alix A.. A multiproxy approach for the reconstruction of ancient continental environments. The case of the Mio-Pliocene deposits of the Granada Basin (southern Iberian Peninsula)[J]. Global and Planetary Change,2015-01-01,131.