Skip to main content
U.S. flag

An official website of the United States government

Dot gov

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Https

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Search Results

164620 results.

Alternate formats: RIS file of the first 3000 search results  |  Download all results as CSV | TSV | Excel  |  RSS feed based on this search  |  JSON version of this page of results

Page 5971, results 149251 - 149275

Show results on a map

Publication Extents

Not all publications have extents, not all extents are completely accurate
Mineral paragenesis and zoning in the central Kentucky mineral district
J. L. Jolly, A. V. Heyl
1964, Economic Geology (59) 596-624
The Central Kentucky mineral district occupies the greater part of the Blue Grass lowland of Kentucky, which lies astride the Lexington dome and the Cincinnati arch. The oldest exposed rocks of the mineralized area are limestones of Middle Ordovician age. The paragenesis throughout the district is constant and traceable, although the relative abundance of minerals varies from vein to vein....
Some Middle Eocene, Lower Eocene, and Paleocene foraminiferal faunas from west Florida
Esther English Richards Applin
1964, Contributions from the Cushman Foundation for Foraminiferal Research (15) 45-72
This discussion of the lithology and microfauna of the clastic facies of the Ecocene and Paleocene rocks of Florida is based mainly on data obtained from the study of many cores taken in the Oil City corporation Walton Land and Timber Co. well 1, Walton County, Fla. Although the fauna...
Woodcock age and sex determination from wings
F.W. Martin
1964, Journal of Wildlife Management (28) 287-293
Age of woodcock (Philohela minor) can be accurately determined throughout the year by differences in pattern, color, and wear of secondary feathers. Immature woodcock retain most secondaries during the postjuvenal molt that begins in July or August and ends in October. In contrast, subadults (first-year adults) and older woodcock molt...
Morphologic studies of the brachiopod genus Composita
Robert S. Grinnell, George W. Andrews
1964, Journal of Paleontology (38) 227-248
The genus Composita consists of smooth-shelled athyroid brachiopods which in North America have a range from Late Devonian or Early Mississippian to Permian. Morphologic variation in the genus has been recognized by earlier workers, but few have tried to show exact relationships among the various forms. The present writers have...
Notes on the ecology of the opossum in Maryland
L. M. Llewellyn, Fred H. Dale
1964, Journal of Mammalogy (45) 113-122
Livetrapping of opossums at the Patuxent Research Refuge in Maryland over an 8-year period resulted in the capture of 224 opossums, with 541 trap records. The maximum recorded trap life was 29 months, and the greatest estimated age was 36 months. Opossums did not enter traps readily, and the average...
Radioelement dispersion in a sedimentary environment and its effect on uranium exploration
R.M. Moxham
1964, Economic Geology (59) 309-321
The radioelement content of the major part of the southeast Texas Coastal Plain sedimentary sequence falls within a range common for sandstones and shales. Exceptions to the normal limit are mainly in small, widely scattered areas. One anomalous area, however, covers several tens of square miles and contains most of the important uranium deposits. Both mechanical and chemical dispersion of radioelements takes...
Radioelement dispersion in a sedimentary environment and its effect on uranium exploration
R.M. Moxham
1964, Economic Geology (59) 309-321
The radioelement content of the major part of the southeast Texas Coastal Plain sedimentary sequence falls within a range common for sandstones and shales. Exceptions to the normal limit are mainly in small, widely scattered areas. One anomalous area, however, covers several tens of square miles and contains most of the important uranium deposits. Both mechanical and chemical dispersion of radioelements takes...
Relation of temperature distribution to ground-water movement in carbonate rocks of central Israel
Robert Schneider
1964, Geological Society of America Bulletin (75) 209-216
The Cenomanian-Turonian formations of central Israel constitute a highly permeable dolomite and limestone aquifer. In this area it is on the west limb of an anticlinorium that trends north-northeast, and it contains water under artesian pressure. A graph of water temperatures and well depths suggests that there is a very small vertical temperature gradient in local segments of the aquifer. The small gradient...
Seismic-refraction measurements of crustal structure between Nevada Test Site and Ludlow, California
J. F. Gibbs, J.C. Roller
1964, Crustal Studies Technical Letter 26
Seismic-refraction measurements from nuclear and chemical explosions were made along a line from the Nevada Test Site (NTS) to Ludlow, California, and additional recordings from nuclear explosions were made southward toward Calexico, California. The time of first arrivals from the Ludlow shotpoint is expressed as T0 = 0.00 + Δ/2.50...
Sedimentology: general introduction and definitions : fluvial sediment and channel morphology
Roger G. Wolff, Paul C. Benedict
1964, Report
Sedimentology, the study of sedimentary rocks and the processes by which they are formed, includes and is related to a large number of phenomena. Sedimentology includes the five fundamental processes defined by the term sediaentation --weathering, erosion, transportation, deposition and diagenesis. Sedimentology shares with geomorphology the study of the surface...
Soil mechanics and soil physics symbols and nomenclature useful in hydrologic studies
A.I. Johnson
1964, Report
The study of hydrology requires an interdisciplinary approach, incorporating knowledge from fields such as engineering, geology, chemistry, and agriculture. With increasing frequency, the hydrologist finds it necessary to study the literature of the soil mechanics and soil physics disciplines for assistance in the solution of hydrologic problems. Because of the inter-relation between hydrology and soil mechanics...
Hydrologic factors pertinent to ground‐water contamination
R. Brown
1964, Groundwater (2) 5-12
Predictions of where and how a fluid waste may travel from disposal site to the water table require detailed information on the physical characteristics, location, and extent of all pervious and impervious materials in the unsaturated zone. Principles concerning the flow system in the unsaturated zone indicate the importance of choice of...
Hydrologic factors pertinent to ground‐water contamination
R. Brown
1964, Groundwater (2) 5-12
Predictions of where and how a fluid waste may travel from disposal site to the water table require detailed information on the physical characteristics, location, and extent of all pervious and impervious materials in the unsaturated zone. Principles concerning the flow system in the unsaturated zone indicate the importance of choice of...