Seawater pH and isotopic paleotemperatures of Cretaceous oceans

Publication Status is "Submitted" Or "In Press: 
LDEO Publication: 
Publication Type: 
Journal Article
Year of Publication: 
2001
Authors: 
Zeebe, R. E.
Editor: 
Journal Title: 
Palaeogeography Palaeoclimatology Palaeoecology
Journal Date: 
Jun 1
Place Published: 
Tertiary Title: 
Volume: 
170
Issue: 
1-2
Pages: 
49-57
Section / Start page: 
Publisher: 
ISBN Number: 
0031-0182
ISSN Number: 
Edition: 
Short Title: 
Accession Number: 
ISI:000169441700004
LDEO Publication Number: 
Call Number: 
Key Words: 
oxygen isotopes; paleotemperatures; cretaceous; ph effect; ssts; cool tropics; sea-surface temperatures; southern high-latitudes; pole thermal-gradients; planktic foraminifera; oxygen isotopes; carbonate concentration; marine temperatures; atmospheric co2;
Abstract: 

Stable oxygen isotope ratios (delta O-18) of foraminifera are widely used to reconstruct the climatic history of Earth. It is well known that temperature reconstructions based on delta O-18 are complicated by factors such as the unknown isotopic composition of the ocean. In addition, recent experimental and theoretical work has shown that the seawater pH has a marked effect on the delta O-18 of foraminifera. Here I employ this effect to demonstrate that reconstructions based on delta O-18 of foraminifera may underestimate sea surface temperatures in the geological past. Ocean surface temperatures for the mid-Cretaceous are estimated to have been similar to2-3.5 degreesC higher than previously thought. (C) 2001 Elsevier Science B.V. All rights reserved.

Notes: 

445CZTimes Cited:32Cited References Count:42

URL: 
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