Vol. 259, Issue 2, 1961

Soundings recently made of the floor of Crater Lake by the U.S. Coast and Geodetic Survey show a maximum depth of 1,932 ft. They reveal the presence of a submerged...

In order to depict the nature of the weathering processes operating in the arctic regions, 4 Arctic Brown soil profiles from northern Alaska were studied. Examination of the sand and...

The shasta ground sloth Nothrotherium shastense inhabited Rampart Cave in the Grand Canyon of the Colorado River, Arizona, for at least 25,000 years. During this interval occupation was probably discontinuous;...

Addition of NH 3 to water-albite and water-granite mixtures at constant pressure raises the melting temperatures of albite and granite, whereas addition of HF to these mixtures causes marked lowering...

The time when water soaked into the ground can be inferred for each sample from the variation of dissolved-gas content, and the effective velocity of ground water can be calculated...

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