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Source beds of petroleum in the Denver Basin
Paul J. Swetland, Jerry L. Clayton
1976, Open-File Report 76-572
Crude oil and shale samples from the Denver basin of Colorado, Wyoming, and Nebraska were analyzed by organic geochemical techniques to determine the stratigraphic occurrence and regional distribution of petroleum source beds. The study demonstrates that the oils produced from Cretaceous Sussex, Shannon, ?D? and 'J' sandstone reservoirs are genetically...
Documentation of finite-difference model for simulation of three-dimensional ground-water flow
Peter C. Trescott, S. P. Larson
1976, Open-File Report 76-591
User experience has indicated that the documentation of the model of three-dimensional ground-water flow (Trescott and Larson, 1975) should be expanded. This supplement is intended to fulfill that need. The original report emphasized the theory of the strongly implicit procedure, instructions for using the groundwater-flow model, and practical considerations for...
Maps Showing Distribution of Heavy Minerals on the South Texas Outer Continental Shelf
Gerald L. Shideler, Romeo M. Flores
1976, Miscellaneous Field Studies Map 841
Heavy minerals constitute a natural resource which, under proper conditions, could have potential economic significance. The purpose of this report is to describe the heavy-mineral distribution in sea-floor sediments On the South Texas Outer Continental Shelf (OCS) within the northwestern Gulf of Mexico. The South Texas OCS encompasses approximately 24,500...