气候变化领域集成服务门户(CCPortal): Clumped isotope paleotemperatures from MIS 5 soil carbonates in southern Hungary

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DOI	10.1016/j.palaeo.2019.01.002
	Clumped isotope paleotemperatures from MIS 5 soil carbonates in southern Hungary
	Újvári G.; Kele S.; Bernasconi S.M.; Haszpra L.; Novothny Á.; Bradák B.
发表日期	2019
ISSN	0031-0182
起始页码	72
结束页码	81
卷号	518
英文摘要	Quantitative paleotemperature reconstructions for the continents, including East Central Europe, over marine isotope stage 5 (MIS 5) and specifically the last interglacial (LIG, MIS 5e) are scarce and mostly based on pollen assemblages. Here we provide soil and air temperature reconstructions for the summer season of MIS 5e (5c) using carbonate clumped isotope thermometry applied to soil carbonate concretions in the Dunaszekcső loess-paleosol record, Southern Hungary. The sediments making up the S1 pedocomplex investigated represent the MIS 5 as demonstrated by bracketing K-feldspar post-IR-IRSL 225/290 ages of ~63 to 164 ka. Both the absolute ages and pedogenic susceptibility (χ P ) curve indicate that all the subtages of MIS 5 were found to be recorded in the sequence, and soil carbonates found >1 m depth below the paleosurface of the S1 soil provide pristine, undisturbed isotopic signals. The soil carbonate concretions likely formed during MIS 5e at a relatively shallow (20–50 cm) depth, but a later formation during MIS 5c at >50 cm depth is also plausible. Clumped isotope-based soil temperatures (ST-Δ 47sc ) ranged from 16 to 20 °C, and reconstructed summer season air temperatures (SATs) for the LIG are consistently lower than the modern values at the site by ~1–5 °C, matching surprisingly well the soil bacteria membrane lipid-based MIS 5e air temperature estimates from a nearby Serbian site. At the same time, the reconstructed SAT values do not match the 2–4 °C positive warm season anomalies modeled for East Central Europe between LIG and present-day in paleoclimate simulations. ST uncertainties of 1–6 °C, infiltration-driven cooling of soil temperatures, and the possibility of MIS 5c formation of the investigated carbonates may account for this proxy-model data discrepancy. Oxygen isotope compositions of summer season paleo-rainwaters for MIS 5e (5c), as reconstructed using the ST-Δ 47sc and δ 18 O sc data of soil carbonates, were found in a range of −6.7 and −6.4‰, matching the modern mean summer season value of −6.2 ± 0.94‰ within error. © 2019 Elsevier B.V.
英文关键词	13 C– 18 O bonding; Loess-paleosol; Marine isotope stage 5; Oxygen isotope; Soil carbonate nodule; Δ 47
语种	英语
scopus关键词	air temperature; interglacial; Last Interglacial; loess; marine isotope stage; oxygen isotope; paleoclimate; paleosol; paleosurface; paleotemperature; pedogenesis; rainwater; reconstruction; seasonal variation; soil microorganism; soil temperature; thermometry; Hungary
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/151065
作者单位	Institute for Geological and Geochemical Research, Research Centre for Astronomy and Earth Sciences, Hungarian Academy of Sciences, Budaörsi u. 45, Budapest, H-1112, Hungary; Geological Institute, ETH Zürich, Sonneggstrasse 5, Zürich, 8092, Switzerland; Hungarian Meteorological Service, Kitaibel Pál u. 1., Budapest, H-1024, Hungary; Geodetic and Geophysical Institute, Research Centre for Astronomy and Earth Sciences, Hungarian Academy of Sciences, Csatkai E. u. 6-8., Sopron, H-9400, Hungary; Department of Physical Geography, Eötvös Loránd University, Pázmány Péter sétány 1/c, Budapest, H-1117, Hungary; Research Center for Inland Seas, Kobe University, Nada, Kobe, 657-8501, Japan
推荐引用方式 GB/T 7714	Újvári G.,Kele S.,Bernasconi S.M.,et al. Clumped isotope paleotemperatures from MIS 5 soil carbonates in southern Hungary[J],2019,518.
APA	Újvári G.,Kele S.,Bernasconi S.M.,Haszpra L.,Novothny Á.,&Bradák B..(2019).Clumped isotope paleotemperatures from MIS 5 soil carbonates in southern Hungary.Palaeogeography, Palaeoclimatology, Palaeoecology,518.
MLA	Újvári G.,et al."Clumped isotope paleotemperatures from MIS 5 soil carbonates in southern Hungary".Palaeogeography, Palaeoclimatology, Palaeoecology 518(2019).