DOI: 10.1016/j.epsl.2018.03.030
Scopus记录号: 2-s2.0-85044160224
论文题名: Using tetraether lipids archived in North Sea Basin sediments to extract North Western European Pliocene continental air temperatures
作者: Dearing Crampton-Flood E. ; Peterse F. ; Munsterman D. ; Sinninghe Damsté J.S.
刊名: Earth and Planetary Science Letters
ISSN: 0012821X
出版年: 2018
卷: 490 起始页码: 193
结束页码: 205
语种: 英语
英文关键词: air temperature
; brGDGTs
; coastal sediments
; paleoclimate
; Pliocene
Scopus关键词: Atmospheric temperature
; Climate change
; Glycerol
; Lipids
; Organic carbon
; Sediments
; Submarine geology
; Surface waters
; Air temperature
; brGDGTs
; Coastal sediments
; Paleoclimates
; Pliocene
; Oceanography
; air temperature
; carbon dioxide
; coastal sediment
; ether
; geological record
; isotopic composition
; lipid
; ocean basin
; organic matter
; paleoclimate
; paleotemperature
; Pliocene
; sea surface temperature
; Atlantic Ocean
; Central Europe
; North Sea
; Northern Europe
; Western Europe
英文摘要: The Pliocene is often regarded as a suitable analogue for future climate, due to an overall warmer climate (2–3 °C) coupled with atmospheric CO2 concentrations largely similar to present values (∼400 ppmv). Numerous Pliocene sea surface temperature (SST) records are available, however, little is known about climate in the terrestrial realm. Here we generated a Pliocene continental temperature record for Northwestern Europe based on branched glycerol dialkyl glycerol tetraether (brGDGT) membrane lipids stored in a marine sedimentary record from the western Netherlands. The total organic carbon (TOC) content of the sediments and its stable carbon isotopic composition (δ13Corg) indicate a strong transition from primarily marine derived organic matter (OM) during the Pliocene, to predominantly terrestrially derived OM after the transition into the Pleistocene. This trend is supported by the ratio of branched and isoprenoid tetraethers (BIT index). The marine–terrestrial transition indicates a likely change in brGDGT sources in the core, which may complicate the applicability of the brGDGT paleotemperature proxy in this setting. Currently, the application of the brGDGT-based paleothermometer on coastal marine sediments has been hampered by a marine overprint. Here, we propose a method to disentangle terrestrial and marine sources based on the degree of cyclization of tetramethylated brGDGTs (#rings) using a linear mixing model based on the global soil calibration set and a newly developed coastal marine temperature transfer function. Application of this method on our brGDGT record resulted in a ‘corrected’ terrestrial temperature record (MATterr). This latter record indicates that continental temperatures were ∼12–14 °C during the Early Pliocene, and 10.5–12 °C during the Mid Pliocene, confirming other Pliocene pollen based terrestrial temperature estimates from Northern and Central Europe. Furthermore, two colder (Δ 5–7 °C) periods in the Pliocene MATterr record show that the influence of Pliocene glacials reached well into NW Europe. © 2018 The Authors Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/109937
Appears in Collections: 影响、适应和脆弱性 气候变化事实与影响
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作者单位: Utrecht University, Faculty of Geosciences, Department of Earth Sciences, P.O. Box 80.012, Utrecht, TA 3508, Netherlands; Toegepast Natuurwetenschappelijk Onderzoek (Netherlands Organization for Applied Scientific Research), Geological Survey of The Netherlands, P.O. Box 80015, Utrecht, TA 3508, Netherlands; NIOZ Royal Netherlands Institute for Sea Research, Department of Marine Microbiology and Biogeochemistry, Utrecht University, P.O. Box 59, Den Burg, Texel, AB 1790, Netherlands
Recommended Citation:
Dearing Crampton-Flood E.,Peterse F.,Munsterman D.,et al. Using tetraether lipids archived in North Sea Basin sediments to extract North Western European Pliocene continental air temperatures[J]. Earth and Planetary Science Letters,2018-01-01,490