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GDGT Thermometry: Lipid Tools for Reconstructing Paleotemperatures
The Paleontological Society Papers, 2012Microbial communities adjust the chemical structure of their cell membranes in response to environmental temperature. This enables the development of lipid-based paleothermometers such as the glycerol dialkyl glycerol tetraether (GDGT) proxies described here.
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Are there optimum sites for global paleotemperature reconstruction?
1996In order to place the relatively short instrumental record of global mean annual temperature in perspective, long proxy records are needed. Since it is unlikely there will ever be a globally extensive network of well-calibrated proxy records, it is necessary to identify sites which capture most of the variance of the larger scale average, to be used as
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Chemical Geology, 2014
Abstract Inhabiting areas of the ocean where paleoenvironmental records are sparse, deep-sea corals represent valuable yet largely untapped Holocene records of intermediate and deep ocean variability. δ18O and δ13C were analyzed in nine live-collected deep-sea gorgonian corals (Isididae and Coralliidae) in order to further develop the “lines ...
Thomas P. Guilderson, Rob Dunbar
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Abstract Inhabiting areas of the ocean where paleoenvironmental records are sparse, deep-sea corals represent valuable yet largely untapped Holocene records of intermediate and deep ocean variability. δ18O and δ13C were analyzed in nine live-collected deep-sea gorgonian corals (Isididae and Coralliidae) in order to further develop the “lines ...
Thomas P. Guilderson, Rob Dunbar
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A 2000 year midge-based paleotemperature reconstruction from the Canadian Arctic archipelago
Journal of Paleolimnology, 2008A lake sediment core recovered from Lake V57 on Victoria Island, Nunavut, Canada, spanning the last 2000 years, was analyzed for sub-fossil midge remains and organic-matter content (estimated by loss-on-ignition (LOI)). Significant changes in midge community composition occurred during the last 2000 years, with a distinct midge community appearing ...
David F. Porinchu +2 more
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2000
An algorithm has been developed that permits the calculation of fauna-based paleotemperatures for Quaternary and pre-Quaternary times. First, the recent components of fossil faunas are detected for each fossil sample. Second, if these components are sufficiently high, a set of rules and equations is applied that estimates the summer- and winter ...
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An algorithm has been developed that permits the calculation of fauna-based paleotemperatures for Quaternary and pre-Quaternary times. First, the recent components of fossil faunas are detected for each fossil sample. Second, if these components are sufficiently high, a set of rules and equations is applied that estimates the summer- and winter ...
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Geology, 2006
Carbon isotope ratios ( 13 C values) of herbivores reflect the 13 C values of dietary plants, and the 13 C values of grazers (animals that consume 90% grass) reflect the local abundance of C3 versus C4 grasses. Because grassland C3/C4 ratios correlate with climate, the 13 C of fossil grazers may serve as a proxy for reconstructing paleoclimates and ...
Kathryn A. Hoppe +2 more
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Carbon isotope ratios ( 13 C values) of herbivores reflect the 13 C values of dietary plants, and the 13 C values of grazers (animals that consume 90% grass) reflect the local abundance of C3 versus C4 grasses. Because grassland C3/C4 ratios correlate with climate, the 13 C of fossil grazers may serve as a proxy for reconstructing paleoclimates and ...
Kathryn A. Hoppe +2 more
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International Journal of Earth Sciences, 2016
The Middle–Late Permian Emeishan Large Igneous Province (ELIP) in southwestern China represents a classic example of a mantle plume origin. To constrain the thermal regime of the ELIP and contemporaneous magmatic activity in the northeastern Sichuan Basin, maximum paleotemperature profiles of deep boreholes were reconstructed using vitrinite ...
Chuanqing Zhu +5 more
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The Middle–Late Permian Emeishan Large Igneous Province (ELIP) in southwestern China represents a classic example of a mantle plume origin. To constrain the thermal regime of the ELIP and contemporaneous magmatic activity in the northeastern Sichuan Basin, maximum paleotemperature profiles of deep boreholes were reconstructed using vitrinite ...
Chuanqing Zhu +5 more
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Oxygen isotope application in paleotemperature reconstruction and water cycle in the deep time
Chinese Science Bulletin, 2023Bo Chen, Maoyan Zhu
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A HIGHLY-RESOLVED, 900-YEAR NEW ENGLAND PALEOTEMPERATURE RECONSTRUCTION
Geological Society of America Abstracts with Programs, 2018Daniel R. Miller +4 more
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