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A sequence of nine two-dimensional cross-sectional groundwater models using MODFLOW-2005 was created to study whether underpressures (subhydrostatic heads) in the Paleozoic units underlying the Great Plains of North America are a consequence of Cenozoic uplift of the area. Based on tectonostratigraphic data incorporated into these nine models, we have developed a cumulative uplift history with superimposed periods of deposition and erosion for the Great Plains for the period from 40Ma to the present. Uplift, deposition, and erosion on an 800 kilometer long geologic cross-section extending from northeast Colorado to eastern Kansas is represented in these nine time-stepped geohydrologic models. Sequential solution...
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This dataset provides an orthorectified aerial photo mosaic derived from airborne fodar data acquired in 2021 on August 31 over the Totatlanika River in central Alaska. The term “fodar” is a portmanteau of foto and lidar, coined by Matt Nolan, which describes a method of quantifying the color and elevation of Earth’s surface via airborne small-format digital camera photography.
    map background search result map search result map MODFLOW-2005 model used to Simulate the Evolution of Fluid Underpressures in the Great Plains, by Incorporation of Tectonic Uplift and Tilting Fodar Orthomosaic of the Totatlanika River Corridor (Alaska) Acquired August 2021 Fodar Orthomosaic of the Totatlanika River Corridor (Alaska) Acquired August 2021 MODFLOW-2005 model used to Simulate the Evolution of Fluid Underpressures in the Great Plains, by Incorporation of Tectonic Uplift and Tilting