Robust multi-proxy data integration, using late Cretaceous paleotemperature records as a case study

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doi: 10.1016/j.epsl.2018.08.010
Author(s): Woelders, Lineke; Vellekoop, Johan; Weltje, Gert Jan; de Nooijer, Lennart J.; Reichart, Gert-Jan; Peterse, Francien; Claeys, Philippe; Speijer, Robert P.
Author Affiliation(s): Primary:
Katholieke Universiteit Leuven, Department of Earth and Environmental Sciences, Division of Geology, Leuven, Belgium
Royal Netherlands Institute for Sea Research, Netherlands
Utrecht University, Netherlands
Vrije Universiteit Brussel, Belgium
Volume Title: Earth and Planetary Science Letters
Source: Earth and Planetary Science Letters, Vol.500, p.215-224. Publisher: Elsevier, Amsterdam, Netherlands. ISSN: 0012-821X CODEN: EPSLA2
Note: In English. Includes appendix. 49 refs.; illus., incl. geol. sketch map
Summary: In paleoclimate studies, multiple temperature records are often compared and combined to evaluate temperature trends. Yet, no standardized approach for integrating proxy-derived paleotemperature records exists. In addition, paleotemperature data are often reported without uncertainty estimates (prediction errors), and raw data are not always available. This complicates the quantification of, for example, temperature trends and the magnitude of warming events. Here we propose a robust quantitative approach for multi-proxy analysis in paleoclimate studies. To demonstrate this, we study the latest Maastrichtian warming event (LMWE) in the ODP 174AX Bass River core (New Jersey), and integrate five independent paleotemperature proxies covering the last million years of the Cretaceous. Our integrated temperature reconstruction suggests that, after a climatically stable period, a latest Cretaceous warming of 3.9±1.1°C occurred between ∼450 and 100 kyr before the K-Pg boundary. The error on this reconstructed temperature should be considered the absolute minimum error, as poorly constrained or unknown uncertainties cannot be fully propagated. The warming event was followed by a gradual cooling to pre-warming conditions towards the end of the Cretaceous. Furthermore, the record suggests multiple warming pulses during the LMWE. The results of this integrated approach are consistent with other latest Cretaceous temperature records, suggesting that the trend described here represents a global signal.
Year of Publication: 2018
Research Program: ODP Ocean Drilling Program
Key Words: 02 Geochemistry; 12 Stratigraphy, Historical Geology and Paleoecology; Alkaline earth metals; Atlantic Coastal Plain; Bass River New Jersey; Calcium; Cenozoic; Climate change; Cores; Cretaceous; Data integration; Errors; Foraminifera; Global change; Global warming; K-Pg boundary; Leg 174AX; Lower Paleocene; Maestrichtian; Magnesium; Mesozoic; Metals; Mg/Ca; Microfossils; New Jersey; Ocean Drilling Program; Paleocene; Paleoclimatology; Paleogene; Paleotemperature; Quantitative analysis; Reconstruction; Stratigraphic boundary; Tertiary; Uncertainty; United States; Upper Cretaceous; Upper Maestrichtian
Coordinates: N393930 N393930 W0742653 W0742653
Record ID: 2018094115
Copyright Information: GeoRef, Copyright 2018 American Geosciences Institute. Reference includes data from CAPCAS, Elsevier Scientific Publishers, Amsterdam, Netherlands