Tertiary marine paleotemperatures

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doi: 10.1130/0016-7606(1975)86<1499:TMP>2.0.CO;2
Author(s): Savin, S. M.; Douglas, R. G.; Stehli, F. G.
Author Affiliation(s): Primary:
Case West. Reserve Univ., Dep. Earth Sci., Cleveland, Ohio, United States
Volume Title: Geological Society of America Bulletin
Source: Geological Society of America Bulletin, 86(11), p.1499-1510. Publisher: Geological Society of America (GSA), Boulder, CO, United States. ISSN: 0016-7606 CODEN: BUGMAF
Note: In English. Planktonic and benthonic foraminifera, oxygen isotopes, DSDP sites, Pacific Ocean and South Atlantic. Case West. Reserve Univ., Dep. Earth Sci. Contrib. No. 101; illus. incl. tables, sketch map
Summary: Oxygen isotopic compositions of the tests of planktonic foraminifera from several Deep Sea Drilling Project sites provide a general picture of low-latitude marine temperatures from Maastrichtian time to the present. Bottom temperatures determined from the isotopic compositions of benthonic foraminifera are interpreted as being indicative of high-latitude surface temperatures. This study reports the results of an oxygen isotope paleotemperature study of Upper Cretaceous and Tertiary foraminiferal tests from the deep sea and derives from them general curves for high- and low-latitude marine thermal history. In middle Miocene time high-latitude temperatures dropped dramatically, perhaps corresponding to the onset of major glaciation in Antarctica, but low-latitude temperatures remained constant or perhaps increased. This uncoupling of high- and low-latitude temperatures is postulated to be related to the establishment of a circum-Antarctic circulation similar to that of today. A further drop in high-latitude temperatures in late Pliocene time probably signaled the onset of a major increase in polar glaciation, including extensive sea-ice formation.
Year of Publication: 1975
Research Program: DSDP Deep Sea Drilling Project
Key Words: 12 Stratigraphy, Historical Geology and Paleoecology; Analysis; Atlantic Ocean; Benthonic; Cenozoic; Cores; Data; Deep Sea Drilling Project; Experimental studies; Foraminifera; Indicators; Invertebrata; Isotopes; Marine; Marine geology; Microfossils; Oceans; Oxygen; Pacific Ocean; Paleoclimatology; Paleoecology; Planktonic; Protista; Samples; South; Stratigraphy; Temperature; Tertiary; Tests
Record ID: 1976003893
Copyright Information: GeoRef, Copyright 2018 American Geosciences Institute. Reference includes data from the Antarctic Bibliography, United States

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