Geology of the Valley and Ridge Province between Delaware Water Gap and Lehigh Gap, Pennsylvania
Jack B. Epstein, Anita G. Epstein
1969, Conference Paper, Geology of selected areas in New Jersey and eastern Pennsylvania and guidebook of excursions
No abstract available....
Recognition and significance of pumice in marine pyroclastic rocks
Richard S. Fiske
1969, Geological Society of America Bulletin (80) 1-8
Pumice is abundant in many ancient sequences of marine pyroclastic rocks and is regarded as important evidence that contemporaneous, or nearly contemporaneous, volcanic activity was the source of at least some of the fragmental debris. The pumice in many such sequences of rocks, however, is easily overlooked, chiefly because most...
Tectonic map of North America
Philip B. King
1969, Report
No abstract available....
Landforms of the United States
John T. Hack
1969, Report
The United States contains a great variety of landforms which offer dramatic contrasts to a crosscountry traveler. Mountains and desert areas, tropical jungles and areas of permanently frozen subsoil, deep canyons and broad plains are examples of the Nation's varied surface. The present-day landforms the features that make up the...
Mineral layering in the Twin Lakes granodiorite, Colorado
H. G. Wilshire
Leonard H. Larsen, Martin Prinz, Vincent Manson, editor(s)
1969, GSA Memoirs 235-262
The Twin Lakes intrusion is composed mainly of coarse-grained porphyritic granodiorite, and is zoned from a felsic core to a slightly more mafic border. Steeply dipping mineral layers, typically a few inches to 5 feet thick and several tens of feet long, occur in discontinuous marginal zones as wide as...
Geologic Settings of Subsidence
Alice S. Allen
David J. Varnes, George Kiersch, editor(s)
1969, Book chapter, Reviews in Engineering Geology
This paper reviews the role of geologic processes that contribute to subsidence in order to aid those starting investigations of ground-surface subsidence. Subsidence occurs, or at least is discovered, only infrequently, and little organized information has been available. In order to assess our present state of knowledge, the author gathered...
Surface-water resources of the Yobe River system, Northern Nigeria, 1963-68
B.E. Colson
1969, Report
No abstract available....
The Cloudy Pass epizonal batholith and associated subvolcanic rocks
Fred W. Cater
1969, Book chapter, The Cloudy Pass epizonal batholith and associated subvolcanic rocks
The Cloudy Pass batholith, one of several small epizonal Tertiary batholiths in the Northern Cascade Mountains, discordantly intrudes metamorphic rocks of pre-Late Cretaceous age. The batholith is remarkable for its chilled borders, associated porphyry plugs, and intrusive breccias. The main body of the batholith consists largely of labradorite granodiorite.Part of...
Structural geology of the Quad-Wyoming-Line Creeks area, Beartooth Mountains, Montana
Lawrence C. Rowan
Leonard H. Larsen, Martin Prinz, Vincent Manson, editor(s)
1969, Book chapter, Igneous and Metamorphic Geology
The Quad-Wyoming-Line Creeks area is in the northeastern part of the Beartooth Mountains of Montana. The rocks of the area consist mainly of banded migmatite, granitic gneisses, amphibolite, quartzite, and agmatite; small amounts of biotite schist and biotite gneiss, iron-silicate rocks, ultramafic rocks, mafic dikes, and felsic porphyries are also...
Sample submittal manual
Water Resources Division, U.S. Geological Survey
1969, Report
Instructions for submitting samples to the Branch of Analytical Laboratories and laboratories of the Field Services Section of the Branch of Exploration Research....
Remote-sensing applications to hydrobiology in South Florida
Milton C. Kolipinski, Aaron L. Higer
1969, Open-File Report FL 68-009
No abstract available....
Photogrammetry with surface-based images
Raymond M. Batson
1969, Applied Optics (8) 1315-1322
Stereoscopic pictures returned by surface-based imaging systems can be used to reconstruct the topography of landing sites on Mars and other planets. Large surface relief with respect to distance and the large scale variation inherent in surface-based pictures produce problems in stereoscopic measurement very different from those presented by high...
Toxicity of Hyamine 3500 to fish
J.W. Hogan
1969, Investigations in Fish Control 32
Abstract not submitted to date...
Use of antimycin for selective thinning of sunfish populations in ponds
R.M. Burress, C.W. Luhning
1969, Investigations in Fish Control 28
Abstract not submitted to date...
Field trials of antimycin as a selective toxicant in channel catfish ponds
R.M. Burress, C.W. Luhning
1969, Investigations in Fish Control 25
Abstract not submitted to date...
The ecology and management of the walleye in western Lake Erie
Henry A. Regier, Vernon C. Applegate, Richard A. Ryder
1969, Technical Report 15
No abstract available....
Efficacy of methylpentynol as an anesthetic on four salmonids
R.M. Howland, R.A. Schoettger
1969, Investigations in Fish Control 29
Abstract not submitted to date...
Lamprey control in the United States
Bernard R. Smith, Everett Louis King
1969, Annual Report 1968
No abstract available....
Toxicological assays with fish
L. L. Marking
1969, Bulletin of the Wildlife Disease Association (5) 291-294
No abstract available. ...
Anorthosite belts, continental drift, and the anorthosite event
N. Herz
1969, Science (164) 944-947
Most anorthosites lie in two principal belts when plotted on a predrift continental reconstruction. Anorthosite ages in the belts cluster around 1300 ±...
Mallard hatching from an egg cracked by freezing
R. J. Greenwood
1969, The Auk (86) 752-754
The eggs of early-nesting waterfowl in North Dakota are frequently exposed to subfreezing temperatures. Mallards (Anas platyrhynchos) and Pintail (Anas acuta), normally the first ducks to arrive in the spring, begin limited early nesting in min-April. Nighttime temperatures during this period frequently drop below freezing, and late spring blizzards are...
Rearing of sea lamprey, Petromyzon marinus, embryos in distilled water
George W. Piavis, John H. Howell
1969, Copeia (1969) 204-205
Most embryological studies of lampreys in the Great Lakes have been conducted with filtered water from Lake Huron. Although this water was entirely satisfactory for the earlier work, the present need for knowledge of the effects of various compounds on embryological development requires that the initial medium be sterile....
Saline water in southeastern New Mexico
W. L. Hiss, J.B. Peterson, T.R. Ramsey
1969, Chemical Geology (4) 341-360
Saline waters from formations of several geologic ages are being studied in a seven-county area in southeastern New Mexico and western Texas, where more than 30,000 oil and gas tests have been drilled in the past 40 years. This area of 7,500 sq. miles, which is stratigraphically complex, includes...
U.S. Geological Survey standards-I. Additional data on rocks G-1 and W-1, 1965-1967
M. Fleischer
1969, Geochimica et Cosmochimica Acta (33) 65-79
Analyses of samples G-1 and W-1 made between 1965-1967 have been collected and "best values" for many elements are suggested....
Surface area of vermiculite with nitrogen and carbon dioxide as adsorbates
Josephus Thomas Jr., Bruce F. Bohor
1969, Clays and Clay Minerals (17) 205-209
Surface-area studies were made on several homoionic vermiculites with both nitrogen and carbon dioxide as adsorbates. These studies show that only very slight penetration occurs between individual vermiculite platelets. This is in contrast to an earlier investigation of montmorillonite where it was found that the degree of penetration between layers...
