Simulating the Evolution of Fluid Underpressures in the Great Plains, by Incorporation of Tectonic Uplift and Tilting, with a Groundwater Flow Model

Figure 3

Index map showing key elements of the Eaton Alvarado ridge in relation to political boundaries (dash-dot lines) and physiographic province boundaries (thin solid lines); some of the latter provinces are grouped together and labelled. The region around the crest of the Alvarado ridge is outlined by a heavy solid line (Figure  2 of [11]).