A Bohemian-type Silurian (Wenlockian) pelecypod faunule from Arctic Canada
J. Pojeta Jr., B.S. Norford
1987, Journal of Paleontology (61) 508-520
The pelecypod genera Slava and Rhombopteria are reported for the first time from Canada, where they occur in a limestone concretion within the Cape Phillips Formation, Cornwallis Island, Arctic Archipelago. These genera are characteristic of Silurian rocks in Bohemia, Czechoslovakia. Graptolites from the same concretion indicate the Monograptus ludensis Zone...
Recognition of Macluritella (Gastropoda) from the Upper Cambrian of Missouri and Nevada
E. L. Yochelson, B.L. Stinchcomb
1987, Journal of Paleontology (61) 56-61
Open-coiled euomphalacean gastropods have been identified for the first time in the Upper Cambrian Eminence Dolomite of Missouri. These gastropods have a triangular whorl profile and are conspecific with Hyolithes walcotti described from the Upper Cambrian of Nevada. That species is questionably reassigned to the gastropod genus Macluritella,...
Significance of non-isotropic scattering from vegetation for geobotanical remote sensing
John W. Salisbury, N.M. Milton, P.A. Walsh
1987, International Journal of Remote Sensing (8) 997-1009
Although it has been known for quite some time that individual leaves display non-Lambertian scattering at wavelengths of strong absorption in the visible part of the spectrum, while displaying near-Lambertian behaviour at wavelengths of little absorption in the near-infrared, this is widely ignored in geobotanical remote sensing investigations. Preliminary data...
LEACHATE MIGRATION FROM A SOLID WASTE DISPOSAL FACILITY NEAR BISCAYNE NATIONAL PARK, SOUTH FLORIDA.
Bradley G. Waller, James L. Labowski
1987, Conference Paper
Leachate from the Dade County Solid Waste Disposal Facility (SWDF) is migrating to the east (seaward) and to the south from the currently active disposal cell. Water levels and ground-water flow directions are strongly influenced by water-management practices. The SWDF is constructed over the salt-intruded part of the highly transmissive...
Redescription of Spirodentalium Walcott (Gastropoda: Late Cambrian) from Wisconsin
E. L. Yochelson
1987, Journal of Paleontology (61) 66-69
Spirodentalium Walcott, 1890, was originally described as a scaphopod. A reinterpretation of the type lot suggests that its overall shape is that of an open-coiled gastropod. If so, this is probably the earliest known open-coiled form and it is sinistral in coiling direction....
Wolfcampian brachiopods from the Bird Spring Group, Wamp Spring area, Las Vegas Range, Clark County, Nevada
P. C. Mills, R.L. Langenheim Jr.
1987, Journal of Paleontology (61) 32-55
The Wamp Spring section of the Bird Spring Group consists of approximately 1,600 feet of carbonate rocks subdivided into a basal platy limestone member, lower cliff-forming member, and upper cliff-forming member. Triticites, Schwagerina, and Schubertella kingi in the platy limestone member indicate an early Wolfcampian age. Schwagerina, Schubertella...
Labeling Projections on Published Maps
John P. Snyder
1987, American Cartographer (14) 21-27
To permit accurate scaling on a map, and to use the map as a source of accurate positions in the transfer of data, certain parameters - such as the standard parallels selected for a conic projection - must be stated on the map. This information is often missing on published...
FUTURE APPLICATIONS OF EXPERT SYSTEMS FOR THE EVALUATION OF ENERGY RESOURCES.
B.M. Miller
1987, Conference Paper, Society of Petroleum Engineers of AIME, (Paper) SPE
The loss of professional experience and expertise in the domain of the earth sciences may prove to be one of the most serious outcomes of the boom-and-bust cyclic nature of the volatile energy and mining industries. Promising new applications of powerful computer systems, known as 'expert systems' or 'knowledge-based systems',...
APPLICATIONS OF CATHODOLUMINESCENCE OF QUARTZ AND FELDSPAR TO SEDIMENTARY PETROLOGY.
Leslie F. Ruppert
1987, Scanning Micros (1) 63-72
Cathodoluminescence (CL), the emission of visible light during electron bombardment, was first used in sandstone petrology in the mid-1960's. CL techniques are especially useful for determining the origin and source of quartz and feldspar, two of the most common constituents in clastic rocks. CL properties of both minerals are dependent...
Denali image map
Douglas R. Binnie, Alden P. Colvocoresses
1987, Photogrammetric Engineering and Remote Sensing (53) 307-310
The Denali National Park and Preserve 1:250,000-scale image map has been prepared and published as part of the US Geological Survey's (USGS) continuing research to improve image mapping techniques. Nine multispectral scanner (MSS) images were geometrically corrected, digitally mosaicked, and enhanced at the National Mapping Division's (NMD) EROS Data Center...
Geochemical evolution of Kohala Volcano, Hawaii
M. A. Lanphere, F.A. Frey
1987, Contributions to Mineralogy and Petrology (95) 100-113
Kohala Volcano, the oldest of five shield volcanoes comprising the island of Hawaii, consists of a basalt shield dominated by tholeiitic basalt, Pololu Volcanics, overlain by alkalic lavas, Hawi Volcanics. In the upper Pololu Volcanics the lavas become more enriched in incompatible elements, and there is a transition from tholeiitic...
Analyzing numerical errors in domain heat transport models using the CVBEM
T. V. Hromadka II
1987, Journal of Offshore Mechanics and Arctic Engineering (109) 163-169
Besides providing an exact solution for steady-state heat conduction processes (Laplace-Poisson equations), the CVBEM (complex variable boundary element method) can be used for the numerical error analysis of domain model solutions. For problems where soil-water phase change latent heat effects dominate the thermal regime, heat transport can be approximately modeled...
An unusual pleomorphic sarcoma in a hybrid mallard
Thomas J. Roffe
1987, Journal of Wildlife Diseases (23) 334-337
An unusual pleomorphic sarcoma from a hybrid mallard (Anas platyrhynchos) is described. Rhabdomyosarcoma was considered in the original differential diagnoses but rejected due to lack of specific characteristics generally seen in these tumors. The histologic characteristics described are consistent with mammalian sarcomas recorded in the literature as malignant fibrous histiocytoma....
Effect of brief navigation-related dewaterings on fish eggs and larvae
L. E. Holland
1987, North American Journal of Fisheries Management (7) 145-147
Short-term dewatering of nearshore spawning areas often occurs during passage of commercial tows in the upper Mississippi River as well as in other navigated river systems. This phenomenon was examined experimentally to identify potential effects on survival of fish eggs and larvae. Early life stages of walleyes (Stizostedion vitreum vitreum)...
Ascaulocardium armatum (Morton 1833), new genus (Late Cretaceous): the ultimate variation on the bivalve paradigm
J. Pojeta Jr., N. F. Sohl
1987, Journal of Paleontology (61)
Cretaceous clavagellid pelecypods are a poorly known group, and have previously received little study. Ascaulocardium armatum is conchologically the most complex burrowing pelecypod known. From the study of living clavagellids, it is possible to interpret the various tubes extending outward from the adventitious crypt of A. armatum as devices...
Remote sensing investigations at a hazardous-waste landfill
Christopher Stohr, Wen-June Su, P.B. DuMontelle, R. A. Griffin
1987, Photogrammetric Engineering and Remote Sensing (53)
In 1976 state licensed landfilling of industrial chemicals was begun above an abandoned, underground coal mine in Illinois. Five years later organic chemical pollutants were discovered in a monitoring well, suggesting migration 100 to 1000 times faster than predicted by laboratory tests. Remote sensing contributed to the determination of the...
Lake Tapps tephra: An early Pleistocene stratigraphic marker in the Puget Lowland, Washington
J.A. Westgate, D. J. Easterbrook, N. D. Naeser, R. J. Carson
1987, Quaternary Research (28) 340-355
The rhyolitic Lake Tapps tephra was deposited about 1.0 myr ago, shortly after culmination of the early phase of the Salmon Springs Glaciation in the Puget Lowland. It is contained within sediments that were deposited in ponds or lakes in front of the reteating glacier. An herb-dominated tundra existed in...
Field observations of slush ice generated during freeze-up in arctic coastal waters
E. Reimnitz, E. W. Kempema
1987, Marine Geology (77) 219-231
In some years, large volumes of slush ice charged with sediment are generated from frazil crystals in the shallow Beaufort Sea during strong storms at the time of freeze-up. Such events terminate the navigation season, and because of accompanying hostile conditions,...
Hawaiian xenolith populations, magma supply rates, and development of magma chambers
D.A. Clague
1987, Bulletin of Volcanology (49) 577-587
Hawaiian volcanoes pass through a sequence of four eruptive stages characterized by distinct lava types, magma supply rates, and xenolith populations. Magma supply rates are low in the earliest and two latest alkalic stages and high in the tholeiitic second stage. Magma storage reservoirs develop at shallow and intermediate depths...
Rheology of the lithosphere: Selected topics
S. H. Kirby, A. K. Kronenberg
1987, Reviews of Geophysics (25) 1219-1244
We review recent results concerning the rheology of the lithosphere with special attention to the following topics: 1) the flexure of the oceanic lithosphere, 2) deformation of the continental lithosphere resulting from vertical surface loads and forces applied at plate margins, 3) the rheological stratification of the continents, 4) strain...
Analysis of Shuttle Multispecral Infrared Radiometer measurements of the western Saudi Arabian shield.
Lawrence C. Rowan, Alexander F.H. Goetz, Elsa Abbott
1987, Geophysics (52) 907-923
During the November 12–14, 1981, mission of the space shuttle Columbia, the Shuttle Multispectral Infrared Radiometer (SMIRR) recorded radiances in ten channels along a 100 m wide groundtrack across the western Saudi Arabian shield. The ten channels are located in the 0.5 to 2.4 μm region, with five positioned between...
Infragravity waves over a natural barred profile
A. H. Sallenger Jr., R.A. Holman
1987, Journal of Geophysical Research Solid Earth (92) 9531-9540
Measurements of cross-shore flow were made across the surf zone during a storm as a nearshore bar became better developed and migrated offshore. Measured infragravity band spectra were compared to synthetic spectra calculated numerically over the natural barred profile assuming a white run-up spectrum of leaky mode or high-mode edge...
Turbidity as a control on phytoplankton biomass and productivity in estuaries
J. E. Cloern
1987, Continental Shelf Research (7) 1367-1381
In many coastal plain estuaries light attenuation by suspended sediments confines the photic zone to a small fraction of the water column, such that light limitation is a major control on phytoplankon production and turnover rate. For a variety of estuarine systems (e.g. San Francisco Bay, Puget Sound, Delaware Bay,...
Analysis of steady-state salt-water upconing with application at Truro well field, Cape Cod, Massachusetts
T. E. Reilly, M. H. Frimpter, D.R. LeBlanc, A.S. Goodman
1987, Groundwater (25) 194-206
Salt-water upconing describes the phenomenon where salt water is transported vertically upward under a well in response to pumpage in a fresh-water aquifer underlain by salt water. Sharp interface methods have been used successfully to describe the physics of upconing. A finite-element model is developed...
Anchor ice, seabed freezing, and sediment dynamics in shallow arctic seas
E. Reimnitz, E. W. Kempema, P. W. Barnes
1987, Journal of Geophysical Research-Oceans (92) 14671-14678
Diving investigations confirm previous circumstantial evidence of seafloor freezing and anchor ice accretion during freeze-up storms in the Alaskan Beaufort Sea. These related bottom types were found to be continuous from shore to 2-m depth and spotty to 4.5-m depth. Spotty anchor ice occurred as pillow-shaped crystal aggregates on buried...
