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Tropical sea temperatures in the high-latitude South Pacific during the Eocene

Lookup NU author(s): Dr Luke Handley

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Abstract

Sea-surface temperature (SST) estimates of similar to 30 degrees C from planktic foraminifera and archaeal membrane lipids in bathyal sediments in the Canterbury Basin, New Zealand, support paleontological evidence for a warm subtropical to tropical climate in the early Eocene high-latitude (55 degrees S) southwest Pacific. Such warm SSTs; call into quest-ion previous estimates based on oxygen isotopes and present a major challenge to climate modelers. Even under hypergreenhouse conditions (2240 ppm CO2), modeled summer SSTs for the New Zealand region do not exceed 20 degrees C.

Publication metadata

Author(s): Hollis CJ, Handley L, Crouch EM, Morgans HEG, Baker JA, Creech J, Collins KS, Gibbs SJ, Huber M, Schouten S, Zachos JC, Pancost RD

Publication type: Article

Publication status: Published

Journal: Geology

Year: 2009

Volume: 37

Issue: 2

Pages: 99-102

Print publication date: 01/02/2009

ISSN (print): 0091-7613

ISSN (electronic): 1943-2682

Publisher: Geological Society of America

URL: http://dx.doi.org/10.1130/G25200A.1

DOI: 10.1130/G25200A.1

Notes: ISI Document Delivery No.: 403QK Times Cited: 1 Cited Reference Count: 39

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