The hydrodynamics of the Big Horn Basin: a study of the role of faults

摘要: A three-dimensional mathematical model simulates virgin groundwater flow in the Big Horn basin, Wyoming. The computed results are compared to two published interpretations of Tensleep Sandstone potentiometric surface; both these interpretations, Bredehoeft and Bennett, Haun, were made from same data set. maps quite different. Bennett ignored faults; Haun treated faults as horizontal barriers flow. hydraulic head at depth over much basin is near land surface elevation, a condition usually defined hydrostatic. This indicates high, regional-scale, vertical conductivity for sediments basin. Our hypothesis explain high that act conduits fluid These can either or nonbarriers, depending upon whether fault zones more permeable less than adjoining aquifers. simulation be reproduced. depend lateral In case where barriers, broken into compartments with areal loss occurring across zones.