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A geochemical investigation of the Valley Spring gneiss and Packsaddle schist, Llano Uplift, Texas
Samples of the Valley Spring gneiss and Packsaddle schist were taken along two profiles in northern and south-eastern Llano County, Texas. These samples were analyzed for the major oxides, thorium, and uranium. A comparison ...
Geology of Culebra Island, Puerto Rico
Culebra Island, located about twenty miles east of Puerto Rico, is composed of undated andesite and spilitic volcanics which are intruded by diorite plutons. On the basis of the ages of similar rocks on Puerto Rico and the ...
Chemical, radiometric, and mineralogic trend surfaces within the Enchanted Rock batholith, Llano and Gillespie counties, Texas
The quantitative areal distribution of chemical, radiometric, and mineralogic variates within the Enchanted Rock batholith is examined statistically by means of least squares. The resultant partial trend surfaces and ...
Continuous seismic profiles of a shelf-edge bathymetric prominence in northern Gulf of Mexico
Sparker profiles across a shelf-edge bathymetric prominence located thirty five miles east of the Mississippi Delta provide three dimensional information as to the nature of the prominence and its relation to flanking ...