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Diagenesis and porosity distribution in deltaic sandstone, Strawn Series (Pennsylvanian) north-central Texas
Extensive diagenetic changes have occurred in deltaic sandstones of the "Gray" interval, Strawn Series (Pennsylvanian) from Taylor County, Texas. The present burial depth of the "Gray" interval is feet (1370 m.), and maximum ...
Geology of Yellow Hill Quadrangle, Brewster County, Texas
The Yellow Hill Quadrangle is between the Bofecillos, Davis, and Chisos volcanic centers of Trans-Pecos Texas. Tertiary volcaniclastic deposits occur only as small outliers on downthrown sides of faults. Erosion has removed ...
Transgressive-regressive deposits of Difunta Group (Upper Cretaceous-Paleocene), Parras Basin, northeastern Mexico
The major purpose of this study was to examine in detail the anomalous transgressive "boundary" sandstones which generally are present at formation boundaries throughout the Parras and La Popa basins. These extensive ...
Silicified evaporite nodules from the Mississippian rocks of southern Kentucky and northern Tennessee
Silicified evaporite nodules from the Mississippian rocks of south-central Kentucky and adjoining Tennessee typify in many respects silicified evaporite nodules which have been reported in rocks of widely differing ages ...
Quaternary faulting in Salt Basin graben, West Texas
Fault scarps cutting alluvial deposits define the present-day eastern boundary of Basin and Range faulting in Trans-Pecos Texas. These faults are found in the Salt Basin graben north of Van Horn, Texas, and its southerly ...
Late Quaternary geomorphic evolution of the Colorado River, Bastrop and Fayette counties, Texas
Ancient and modern flood plain and channel morphology was mapped in the late Quaternary alluvial valley of the Colorado River between Utley and La Grange, Texas. The analysis of N.A.S.A.-generated color aerial infrared ...