Digital 3-D Geologic Framework data for the Rio Grande Transboundary region of New Mexico, Texas, USA and Northern Chihuahua, Mexico

This digital dataset of a three-dimensional hydrogeologic framework for the Rio Grande Transboundary region of New Mexico, Texas, USA and Northern Chihuahua, Mexico defines the geometry, extent, and character of aquifers of the region and is intended as the digital hydrogeologic input data for numerical simulation of the groundwater system. The data consist of a single GeoDatabase (RGTIHM_3DHFM.gdb) that contains five polygon vector feature classes and two line vector feature classes: Polygon feature class RGTIHM_3DHFM_modelgrid have X, Y and elevation attributes that define the hydrostratigraphic framework for the recent alluvium, subdivisions of the Santa Fe Group, and pre-Santa Fe Group bedrock units that serve as the geohydrologic layering of the digital framework model. Polygon data are also attributed with codes that represent sedimentary facies that can be used to distribute hydraulic properties of the aquifer layers. The four other polygon feature classes (RGTIHM_3DHFM_extent_LSF, RGTIHM_3DHFM_extent_MSF, RGTIHM_3DHFM_extent_USF, and RGTIHM_3DHFM_extent_RC) represents the surface and subsurface extent of the hydrostratigraphic subdivisions of the Santa Fe Group (LSF, MSF, USF) and of recent alluvium (RC). The line vector feature classes RGTIHM_3DHFM_faults and RGTIHM_3DHFM_volc_dikes represent the faults the igneous intrusive dikes, respectively, used in the three-dimensional hydrogeologic framework model. Both faults and dikes may be used as potential horizontal flow barriers in numerical simulation of the groundwater system.