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This dataset collects sea surface temperature data generated through alkenone analysis of late Pliocene sediments collected from cores and field localities by USGS PRISM project members. Alkenone analysis of sample material was performed by Timothy Herbert at Brown University.
We include planktic and benthic foraminifer census data tables from the Paleocene-Eocene sections of South Dover Bridge and Mattawoman Creek-Billingsley Road coreholes.
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Model experiments that attempt to simulate climates of the past serve to identify both similarities and differences between two climate states and, when compared with simulations run by other models and with geological data, to identify model-specific biases. Uncertainties associated with both the data and the models must be considered in such an exercise. The most recent period of sustained global warmth similar to what is projected for the near future occurred about 3.3–3.0 million years ago, during the Pliocene epoch. Here, we present Pliocene sea surface temperature data, newly characterized in terms of level of confidence.
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Alkenone data were extracted from core and outcrop samples from the Miocene and Pliocene of the mid Atlantic Coastal Plain. The Uk'37 index is used to estimate temperature and total C37 is used to estimate productivity. Planktonic foraminifer abundance's are provided for two cores.
Average abundances of polar/subpolar planktic foraminiferal species n the North Atlantic for Nordic Sea ODP Sites 907 and 909 represent percentages when Nordic Sea water was warm enough to support foraminifera. N. atlantica relative abundances at very high northern latitudes (ODP Site 909) are lower than at subpolar latitudes because N. pachyderma (s) dominated these very cold waters during the Pliocene.


    map background search result map search result map PRISM late Pliocene (Piacenzian) alkenone - derived SST data Revised PRISM3 Pliocene Sea Surface Temperature Estimates Alkenone and foraminifer abundance data from Miocene and Pliocene Atlantic Coastal Plain sediments PRISM late Pliocene (Piacenzian) alkenone - derived SST data Revised PRISM3 Pliocene Sea Surface Temperature Estimates