Search Documents

Jan 1, 1944

Jan 1, 1944

Jan 1, 1947

Jan 1, 1947

Jan 1, 1914

Jan 1, 1934

Jan 1, 1917

Jan 1, 1969

By R. W. Raymond

Jan 1, 1902

Jan 1, 1905

Jan 1, 1956

By Daniel S. Lyons

Jan 1, 1946

By Persifor Frazer

Comparative columns expressing the series of rocks of the lower half of the Mesozoic age in this country and in Europe are not yet definitely established. The following represents a co-ordination of the beds in England and Germany,* with a list of materials to be worked in from this country .†

By Sherwin F. Kelly

Airborne techniques enter hard rock exploration field. . . the gap between pure geophysics and engineering seen as closing rapidly.

Jan 2, 1951

By William H. Callahan

"For his exceptionally successful career as a geological mentor, for his ore-finding skills, and particularly the discovery of the Central Tennessee Zinc District and for his lecture, 'Prospecting in the USA-Promise and Problems.' " Recipient of the 1982 D.C. Jackling Award

Jan 1, 1983

By Kirby D. Mellegard, Ralph A. Wagner, Paul E. Senseny

Six creep laws for salt, each fitted to the same laboratory data base, are used in a numerical model of the deformation of an opening in salt to determine the influence of creep law form on the predicted closures. Results show that predicted closures can be very sensitive to the functional form of the creep law chosen to model the laboratory data.

Jan 1, 1982

By E. J. Schmitz

The existence of copper-ores in the Permian measures of Texas has long been known, and these ores have been, from time to time, the object of geological researches and mining

Jan 1, 1897

Jan 1, 1925

[ ]

Jan 1, 1938

Jan 1, 1957