{"dp_type": "Dataset", "free_text": "Sedimentology"}
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Dataset Title/Abstract/Map | NSF Award(s) | Date Created | PIs / Scientists | Project Links | Abstract | Bounds Geometry | Geometry | Selected | Visible |
---|---|---|---|---|---|---|---|---|---|
Argon thermochronological data on Pliocene ice-rafted detrital mineral grains from IODP Expedition 379 in the Amundsen Sea sector
|
2114839 |
2025-02-24 | Hemming, Sidney R.; Passchier, Sandra |
West Antarctic Ice-sheet Change and Paleoceanography in the Amundsen Sea Across the Pliocene Climatic Optimum |
This dataset contains 40Ar/39Ar measurements on detrital mineral grains from ice-rafted detritus at International Ocean Discovery Program Sites U1532 and U1533 in the Amundsen Sea sector. The depositional age of the sediments is early Pliocene. | ["POLYGON((-109.05 -68.612,-108.8974 -68.612,-108.7448 -68.612,-108.59219999999999 -68.612,-108.4396 -68.612,-108.287 -68.612,-108.1344 -68.612,-107.98179999999999 -68.612,-107.8292 -68.612,-107.67660000000001 -68.612,-107.524 -68.612,-107.524 -68.62429999999999,-107.524 -68.6366,-107.524 -68.6489,-107.524 -68.6612,-107.524 -68.67349999999999,-107.524 -68.6858,-107.524 -68.6981,-107.524 -68.71039999999999,-107.524 -68.7227,-107.524 -68.735,-107.67660000000001 -68.735,-107.8292 -68.735,-107.98179999999999 -68.735,-108.1344 -68.735,-108.287 -68.735,-108.4396 -68.735,-108.59219999999999 -68.735,-108.7448 -68.735,-108.8974 -68.735,-109.05 -68.735,-109.05 -68.7227,-109.05 -68.71039999999999,-109.05 -68.6981,-109.05 -68.6858,-109.05 -68.67349999999999,-109.05 -68.6612,-109.05 -68.6489,-109.05 -68.6366,-109.05 -68.62429999999999,-109.05 -68.612))"] | ["POINT(-108.287 -68.67349999999999)"] | false | false |
Grain-size data for the Pliocene section at IODP Site U1533, Amundsen Sea
|
2114839 |
2025-02-13 | Passchier, Sandra; Mino-Moreira, Lisbeth |
West Antarctic Ice-sheet Change and Paleoceanography in the Amundsen Sea Across the Pliocene Climatic Optimum |
This dataset contains measurements of particle-size distributions on sediment from International Ocean Discovery Program Site U1533. Carbonate, and organic matter were removed through addition of 10mL aliquots of 30% H2O2 and 2mL aliquots of 10% HCl to ~50-100mL suspension on a hot plate. Dispersion was through heating with sodium pyrophosphate. Samples were measured on a Malvern Mastersizer 2000 with a Hydro 2000MU (A) accessory, using a Refractive index of 1.6 (Illite) and an absorption coefficient of 0.9. Results are in (vol. %) per size class, with diameter range equivalent to the diameter of spheres with the same volume as measured particles. | ["POINT(-109.05 -68.735)"] | ["POINT(-109.05 -68.735)"] | false | false |