Paleo-water depth grids for the 3D petroleum systems model of the Williston Basin, USA
Dates
Publication Date
2023-04-26
Time Period
2022
Citation
Gelman, S.E., and Johnson, B.G., 2023, Data release for the 3D petroleum systems model of the Williston Basin, USA: U.S. Geological Survey data release, https://doi.org/10.5066/P9N7O1OT.
Summary
Paleo-water depth is an important component of modeling surface temperatures through time. Paleo-water depth values represent the elevation of the sediment-water interface relative to global mean sea level at a particular point in geologic time. In most of the model time steps, paleo-water depth values were treated uniformly (single value) across the modeled area of interest, as a simplifying assumption. Most of the model layers were deposited in marine conditions, where the sediment-water interface was below mean sea level (positive paleo-water depths); however, the ground surface of the Williston Basin is now several thousand feet above sea-level, and the Cenozoic model layers were likely deposited in continental conditions, where [...]
Summary
Paleo-water depth is an important component of modeling surface temperatures through time. Paleo-water depth values represent the elevation of the sediment-water interface relative to global mean sea level at a particular point in geologic time. In most of the model time steps, paleo-water depth values were treated uniformly (single value) across the modeled area of interest, as a simplifying assumption. Most of the model layers were deposited in marine conditions, where the sediment-water interface was below mean sea level (positive paleo-water depths); however, the ground surface of the Williston Basin is now several thousand feet above sea-level, and the Cenozoic model layers were likely deposited in continental conditions, where the sediment-water interface represents paleo-topography (negative paleo-water depths). The model uses the present-day topography to interpolate paleo-water depth between the present-day topography and the uniform paleo-water depth at the 70 Ma time step in the model. The interpolation was generated at three time steps: 50, 43, and 20 Ma time steps, where each of these interpolations is describe with an ASCII grid of map-varying values of paleo-water depth. This is a child item of a larger data release titled "Data release for the 3D petroleum systems model of the Williston Basin, USA".
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paleo-water_depth_grids.xml Original FGDC Metadata
View
11.82 KB
application/fgdc+xml
grids_paleo_water_depth.zip “Zip file containing all paleo-water depth grids”
599.18 KB
application/zip
PWD.png “Paleo-water depth grid assigned to basin model 50 million years ago.”
206.73 KB
image/png
Purpose
Paleo-water depths are a required input for petroleum systems modeling. They are used in reconstructing burial history and modeling the surface temperature through time.
Preview Image
Paleo-water depth grid assigned to basin model 50 million years ago.