Results 151 to 160 of about 3,343 (212)
Quantifying the Variability of Paleotemperature Fluctuations on Heat Flow Measurements
Geothermics, 2017 Climatically-driven surface temperature fluctuations disturb the steady state geotherm, and affect vertical heat flow measurements in shallow (<1000 m deep) boreholes.
Asadusjjaman Suman, Duanne A. White
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Robust Multi-Proxy Data Integration, Using Late Cretaceous Paleotemperature Records as a Case Study
Earth and Planetary Science Letters, 2018 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.
Johan Vellekoop, Francien Peterse
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Science, 1970
The generalized isotopic paleotemperature curve reproduces absolute temperatures to within 1°C; it closely reflects faunal changes; and its time scale is correct to within a very few percent back to at least 175,000 years. The average oxygen isotopic composition of the North American and European ice caps was about -9 per mil.
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The generalized isotopic paleotemperature curve reproduces absolute temperatures to within 1°C; it closely reflects faunal changes; and its time scale is correct to within a very few percent back to at least 175,000 years. The average oxygen isotopic composition of the North American and European ice caps was about -9 per mil.
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Paleotemperatures for the Gulf of Mexico
Journal of Geophysical Research, 1970The δ18O range in Globigerinoides rubra fossils in a Sigsbee knoll core indicates a temperature range of about 5°C for the Gulf of Mexico during the Pleistocene age. By use of the empirically determined temperature dependence of δ13C of photosynthetically fixed carbon and by use of observed values for various sediment cores, a temperature range up to ...
William M. Sackett, John G. Rankin
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Tertiary marine paleotemperatures
Geological Society of America Bulletin, 1975Oxygen 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 ...
SAMUEL M. SAVIN +2 more
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The Last Interglacial: Paleotemperatures and Chronology
Science, 1971The O 18 /O 16 analysis and Th 230 /Pa 231 dating of deep-sea cores showed that the last interglacial age, with an early major temperature maximum followed by two smaller ones, extended from 100,000 to 70,000 years ago and was preceded by a ...
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The Brunhes Epoch: Isotopic Paleotemperatures and Geochronology
Science, 1974Oxygen isotopic analysis of a long piston core from the western equatorial Pacific has produced a record for the entire Brunhes epoch. This record can be correlated point by point with the isotopic records of previously analyzed Atlantic and Caribbean cores, leading to the construction of a generalized temperature curve for the entire Brunhes epoch.
C, Emiliani, N J, Shackleton
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Paleotemperature analysis of tertiary floras
Palaeogeography, Palaeoclimatology, Palaeoecology, 1969Abstract Mean annual temperature (T) and mean annual range of temperature (A) closely delineate the thermal field that circumscribes the distribution of modern plant communities. The data provide a reliable measure of paleotemperature for Tertiary floras whose composition corresponds to living communities.
Daniel I. Axelrod, Harry P. Bailey
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Australian Tertiary Paleotemperatures
The Journal of Geology, 1966Tertiary fossil oysters and clams from sites in southern Victoria, Australia, of about lat. 38° S. have been used to determine paleotemperatures from their $$O^{18}/O^{16}$$ ratio. High temperatures were found in the Upper Oligocene-Lower Miocene with a fairly sharp drop into the Middle Miocene.
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Ordovician oxygen isotopes and paleotemperatures
Palaeogeography, Palaeoclimatology, Palaeoecology, 1997Abstract Valid marine δ18O proxies have been defined from three Ordovician units and with previously estimated sea water δ18O values we have calculated paleotemperatures for low latitude settings during a greenhouse climatic era. Valid marine proxies include: marine equant, bladed and translucent fibrous calcite.
K.J. Tobin, K.R. Walker
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