Publications
These publications showcase the significant science conducted in our Science Centers.
Filter Total Items: 16795
Magnetic properties of the Bay of Islands ophiolite suite and implications for the magnetization of oceanic crust
Rock magnetic properties, opaque mineralogy, and degree of metamorphism were determined for 101 unoriented samples from the North Arm and Blow-Me-Down massifs of the Bay of Islands ophiolite complex, Newfoundland. The weathered and metamorphosed extrusive basalt samples have a weak, secondary magnetization arising from oxidation and exsolution of ilmenite of unknown origin. The initial magnetizati
Authors
B. Ann Swift, H. Paul Johnson
Water gun vs air gun: A comparison
The water gun is a relatively new marine seismic sound source that produces an acoustic signal by an implosive rather than explosive mechanism. A comparison of the source characteristics of two different-sized water guns with those of conventional air guns shows the the water gun signature is cleaner and much shorter than that of a comparable-sized air gun: about 60-100 milliseconds (ms) for an 80
Authors
D. R. Hutchinson, R. S. Detrick
Observation of a swimming wolf killing a swimming deer
No abstract available.
Authors
M.E. Nelson, L. D. Mech
Home-range formation and dispersal of deer in northeastern Minnesota
Eleven white-tailed (Odocoileus virginianus) does and their offspring (10 male and 6 female fawns) were radio-tracked for up to 56 months (2,725 total deer locations) in Minnesota's Superior National Forest from November 1974 through August 1983. All fawns wintered in yards with their does and migrated in spring to their does' summer ranges where they then separated from the does. By 17 months of
Authors
M.E. Nelson, L. D. Mech
Species groups in Proechimys (Rodentia: Echimyidae) as indicated by karyology and bullar morphology
The genus Proechimys is divisible into four groups of species on the basis of bullar septal patterns. Each of the four groups can be further characterized by distinctive distributions and karyotypes. The subgenus Trinomys and the guairae species group each are comprised of phylogenetically closely-related species. The semispinosus- and brevicauda-groups, although generally distinctive on the basis
Authors
A.L. Gardner, L.H. Emmons
Recuperation of a severely debilitated wolf
Opportunities are rare for determining the degree to which an animal can starve and still survive. Therefore we describe here an incident in which a wild wolf (Canis lupus) starved almost to death and was then restored to her former free-ranging state. The incident took place in northern Lake County, Minnesota
Authors
L. D. Mech, U. S. Seal, S.M. Arthur
Icthyophonus-like infection in newts (Notophthalmus viridescens Rafinesque)
No abstract available.
Authors
R. L. Herman
Erratum for shorebird banding at New Haven harbor
No abstract available
Authors
Jeffrey A. Spendelow
Reworked Hantkenina speciments at Little Stave Creek, Alabama
The Eocene-Oligocene boundary in Mississippi and Alabama has been traditionally placed between the Shubuta Member of the Yazoo Formation and the overlying Red Bluff Formation (or its carbonate facies equivalent, the Bumpnose Formation). Consequently, the presence of Eocene planktonic foraminifers in the Red Bluff and Bumpnose has long been attributed to reworking. To test the validity of this hypo
Authors
Laurel M. Bybell, Richard Z. Poore
An extensive data base for cobalt-rich ferromanganese crusts from the world oceans
A new database for ferromanganese crusts from the world oceans is being compiled by the U.S. Geological Survey. Crusts differ from abyssal nodules by forming principally on steeper, raised areas or current-swept plateaus in the oceans. Some crusts contain relatively large concentrations of cobalt (1.0%) in areas within national territorial jurisdictions.
Authors
Frank T. Manheim, T.H. Ling, C.M. Lane