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Showing 1 to 6 of 6 for “"paleothermometry"”.
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High Resolution Paleothermometry Using Biogenic Silica: A Feasibility Study
<p> Biogenic silica is produced by numerous organisms that include grasses, protozoa, and Chrysophyceae, as well as marine and freshwater diatoms and sponges (Simpson and Volcani, 1981). It is therefore not uncommon for biogenic silica to be found in environments subject to wildfires. Experimental …
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Carbonate Carbon Isotope Chemostratigraphy from the Ruby Ranch Member of the Cedar Mountain Formation in the Western San Rafael Swell
… samples have been analyzed for clumped isotope paleothermometry to test a hypothesis that this positive isotope excursion corresponds with a late Aptian “cold snap” in an otherwise greenhouse climate. This data produced values that were not reliable estimates of temperature. Additional studies …
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EFFECTS OF MICROTEXTURAL INTERACTIONS OF ORGANICS AND SILICA ON SILICA DIAGENESIS
… dependency of this phase transition for paleothermometry in opal-bearing sedimentary rocks. Those works determined that bulk concentrations of silica, organic material, and detrital minerals influenced the phase transition temperature. However, previous work only addressed the influence …
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Refinement and application of a new paleotemperature estimation technique
A recently developed technique for determining past sea surface temperatures (SST), based on an analysis of the unsaturation ratio of long chain C37 methyl alkenones (Uk37) produced by Prymnesiophyceae phytoplankton, has been applied to late Quaternary sediment cores. Previous studies have shown …
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Thermal and Diagenetic Evolution of Carboniferous Sandstones, Central Appalachian Basin
The thermal and diagenetic evolution of Carboniferous sandstones in the central Appalachian basin has been resolved using various techniques. Paleothermometers including vitrinite reflectance and fluid inclusions indicate that burial of Lower and Upper Pennsylvanian strata of the Appalachian …
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Seasonality in a changing climate: Insights from the modern ocean with application to the Eocene Epoch
<p>Climate change is arguably the most important issue facing modern society. One of the best tools we have for constraining future climate conditions comes from looking at warm and transitional intervals in Earth’s geologic past, such as the Eocene Epoch (~56-34 Ma). The Eocene Epoch was a time of …