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Paleothermometry

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Methods in Geochemistry and Geophysics, 2: Paleotemperature Analysis focuses on the paleotemperature-analytical method, including the use of oxygen isotopes in carbonate analysis and in advancing knowledge on paleoclimates. The manuscript first offers information on the isotopes of oxygen as climatic indicators and sampling of fossil organisms, as well as oxygen and paleotemperatures, belemnoidea, and other fossils. The book also ponders on chemical techniques and mass spectrometric methods. Discussions focus on thermal and acid decomposition of carbonates, slow formation of carbonate solids,

Paleothermometry. --- Paleoclimatology

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The TEX86 paleothermometer is based upon the distribution of archaeal membrane lipids ('GDGTs') in marine sediments. GDGTs are ubiquitous, abundant and relatively resistant to degradation; as such, the TEX86 paleothermometer has been used to reconstruct sea surface temperature (SST) during the Cenozoic and early Mesozoic. We review the principles of the TEX86 proxy and developments made over the last two decades. We also discuss its application as a paleotemperature proxy and explore existing challenges and limitations.

Paleothermometry. --- Ocean temperature. --- Archaebacteria. --- Membrane lipids.

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Atmospheric carbon dioxide --- Carbon cycle (Biogeochemistry) --- Geochronometry --- Geology, Stratigraphic --- Paleothermometry --- Congresses. --- Congresses --- Carbon cycle (Biogeochemistry) - Congresses --- Atmospheric carbon dioxide - Congresses --- Geochronometry - Congresses --- Paleothermometry - Congresses --- Geology, Stratigraphic - Congresses --- CLIMATOLOGIE GENERALE --- CLIMAT --- VARIATIONS DANS LE TEMPS --- PALEONTOLOGIE GENERALE --- PROBLEMES DE PALEONTOLOGIE --- ORIGINE DE LA VIE --- EVOLUTION