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Gravity map of the Nabesna Quadrangle, Alaska
David F. Barnes, Robert L. Morin
1975, Miscellaneous Field Studies Map 655-I
The gravity map of the Nabesna quadrangle indicates significant variations in the densities and thicknesses of the rock units that underlie the quadrangle. Most of this gravity relief is indirectly related to regional topographic relief or lithologic variations that are revealed in the rock outcrops. However, some significant features of...
Time-of-travel study: Lake Erie-Niagara River basins
Bernard Dunn
1975, Open-File Report 66-32
Time of travel was determined for 80.54 stream miles on Cattaraugus, Cayuga, Ellicott, Murder, and Tonawanda Creeks; Cazenovia Creek basin; and the Buffalo River. Two or three runs at different discharge rates were made in 13 subreaches on the 7 streams except for a subreach of Ellicott ·creek. In the Ellicott Creek subreach from...
The screech owl: Its life history and population ecology in northern Ohio
Laurel F. VanCamp, Charles J. Henny
1975, North American Fauna 71
The screech owl (Otus asio) is native to North America and breeds throughout the United States and in portions of Canada and Mexico. It is a small owl, 20 cm (8 in) in length from the tip of the bill to the tip of the tail, with a wing span...
The geologic story of Isle Royale National Park
N. King Huber
1975, Bulletin 1309
Isle Royale is an outstanding example of relatively undisturbed northwoods lake wilderness. But more than simple preservation of such an environment is involved in its inclusion in our National Park System. Its isolation from the mainland provides an almost untouched laboratory for research in the natural sciences, especially those studies...
The geologic story of Arches National Park
Stanley William Lohman
1975, Bulletin 1393
According to former Superintendent Bates Wilson (1956), Prof. Lawrence M. Gould, of the University of Michigan, was the first to recognize the geologic and scenic values of the Arches area in eastern Utah and to urge its creation as a national monument. Mrs. Faun McConkie Tanner told me that Professor...
Rapid analysis of silicate, carbonate, and phosphate rocks: Revised edition
Leonard Shapiro
1975, Bulletin 1401
The rapid methods previously used by the U.S. Geological Survey to determine the major constituents of rocks have been modified to introduce atomic absorption spectrometry (AAS) where applicable. Two procedures are available for determining 10 constituents: one, from a single solution prepared by a nitric-acid dissolution of a lithium metaborate-lithium...