Seven maps depicting general geology, physical properties, environmental geology, soils, soil thickness, slope, and fracture intensity describe the land in the Lake Travis vicinity. The maps, descriptive text, and interpretive ...

A nuclear magnetic resonance study of 15 phosphine-boranes has been undertaken with the view to investigating the electronic nature of the P-B dative bond. A correlation between the ³¹P-¹¹B coupling constant and the base ...

The San Pedro Zacapa quadrangle lies along the valley of the Río Ulúa, just southwest of Lago de Yojoa in west-central Honduras. Most of the area lies within the sierras of northern Central America; volcanic ranges and ...

Carboniferous sedimentary rocks in eastern San Saba County and western Lampasas County are composed of an assemblage of lithosomes now assigned to the Houy, Chappel, Barnett, Marble Falls, Smithwick, and Strawn formations. ...

The Montaña de Comayagua structural belt is a zone trending N. 60° W., more than 130 kilometers long, of exposed earliest Tertiary and older rocks that were complexly deformed during the Laramide orogeny. The Honduras ...

Nitrogen isotope ratios of ammonium and nitrate ions from soil and water samples can be analyzed reproducibly with an experimental error of approximately ±1⁰/₀₀. Two isotopic ranges of soil nitrate are found in the soils ...

Largely ignored by students of wartime America, the Pearl Harbor disaster became the basis for a political controversy which perpetuated the pre-war isolationist-interventionist debate and challenged the authority of the ...

The parametric reception of a low frequency plane wave by the use of nonlinear interactions between acoustic waves is examined both theoretically and experimentally. The parametric reception of a low frequency wave is ...

The splitting of spacetime into space and time is analyzed by abstract methods, coordinate methods, and numerical computer methods. General relativity is assumed to be the correct theory of gravity and the Einstein field ...