An optimist's view of the future
J. P. McCraren
1984, University of Maryland Sea Grant Publication UM-SG-MAP-84-01
No abstract available at this time...
United States Geological Survey Yearbook, fiscal year 1983
Water Resources Division, U.S. Geological Survey
1984, Report
The fiscal year 1983 Yearbook summarizes the activities of the U.S. Geological Survey in response to its scientific and regulatory missions....
Salmonid whirling disease : new findings provide evidence that the infectious form is a Triactinomyxon produced in a tubificid worm
K. Wolf, M.E. Markiw
1984, Research Information Bulletin 59
No abstract available at this time...
Monoclonal antibody against IHN virus
C. L. Schultz, B. C. Lidgerding, P. E. McAllister, F. M. Hetrick
1984, Fish Health Section Newsletter (12) 5-5
You asked for it! New edition of the report to the fish farmers
M. Martin
1984, Aquaculture Magazine (11) 37-37
Submarine-fan facies associations of the Upper Cretaceous and Paleocene Gottero Sandstone, Ligurian Apennines, Italy
T. H. Nilsen, E. Abbate
1984, Geo-Marine Letters (3) 193-197
The Upper Cretaceous and Paleocene Gottero Sandstone was deposited as a small deep-sea fan on ophiolitic crust in a trench-slope basin. It was thrust northeastward as an allochthonous sheet in Early and Middle Cenozoic time. The Gottero, as thick as 1500 m, was probably derived from erosion of Hercynian granites...
Submarine-fan facies associations of the Eocene Butano Sandstone, Santa Cruz mountains, California
T. H. Nilsen
1984, Geo-Marine Letters (3) 167-171
The Eocene Butano Sandstone was deposited as a submarine fan in a relatively small, partly restricted basin in a borderland setting. It is possibly as thick as 3000 m and was derived from erosion of nearly Mesozoic granitic and older metamorphic rocks located to the south. Deposition was at lower...
Ferrelo fan, California: Depositional system influenced by Eustatic sea level changes
D. G. Howell, J. G. Vedder
1984, Geo-Marine Letters (3) 187-192
Remnants of an Eocene fan system are preserved onshore at San Diego and in the central part of the southern California borderland. Even though faults and erosion have truncated its margins, geophysical data and exploratory wells indicate that remaining parts of the fan extend beneath an offshore area nearly 400-km...
Monterey Fan: Growth pattern control by basin morphology and changing sea levels
W. R. Normark, C. E. Gutmacher, T. E. Chase, P. Wilde
1984, Geo-Marine Letters (3) 93-99
Monterey Fan is the largest modern fan off the California shore. Two main submarine canyon systems feed it via a complex pattern of fan valleys and channels. The northern Ascension Canyon system is relatively inactive during high sea-level periods. In contrast, Monterey Canyon and its tributaries to the south cut...
Problems in turbidite research: A need for COMFAN
W. R. Normark, E. Mutti, A.H. Bouma
1984, Geo-Marine Letters (3) 53-56
Comparison of modern submarine fans and ancient turbidite sequences is still in its infancy, mainly because of the incompatibility of study approaches. Research on modern fan systems mainly deals with morphologic aspects and surficial sediments, while observations on ancient turbidite formations are mostly directed to vertical sequences. The lack of...
Navy Fan, California Borderland: Growth pattern and depositional processes
W. R. Normark, D.J.W. Piper
1984, Geo-Marine Letters (3) 101-108
Navy Fan is a Late Pleistocene sand-rich fan prograding into an irregularly shaped basin in the southern California Borderland. The middle fan, characterized by one active and two abandoned 'distributary' channels and associated lobe deposits, at present onlaps part of the basin slope directly opposite from the upper-fan valley, thus...
The Laurentian Fan: Sohm Abyssal Plain
D.J.W. Piper, D.A.V. Stow, W. R. Normark
1984, Geo-Marine Letters (3) 141-146
The 0.5- to 2-km thick Quaternary Laurentian Fan is built over Tertiary and Mesozoic sediments that rest on oceanic crust. Two 400-km long fan valleys, with asymmetric levees up to 700-m high, lead to an equally long, sandy, lobate basin plain (northern Sohm Abyssal Plain). The muddy distal Sohm Abyssal...
The Ebro Deep-Sea Fan system
C.H. Nelson, A. Maldonado, F. Coumes, H. Got, A. Manaco
1984, Geo-Marine Letters (3) 125-131
The Ebro Fan System consists of en echelon channel-levee complexes, 50??20 km in area and 200-m thick. A few strong reflectors in a generally transparent seismic facies identify the sand-rich channel floors and levee crests. Numerous continuous acoustic reflectors characterize overbank turbidites and hemipelagites that blanket abandoned channel-levee complexes. The...
Sedimentary, tectonic, and sea-level controls on submarine fan and slope-apron turbidite systems
D.A.V. Stow, D. G. Howell, C.H. Nelson
1984, Geo-Marine Letters (3) 57-64
To help understand factors that influence submarine fan deposition, we outline some of the principal sedimentary, tectonic, and sea-level controls involved in deep-water sedimentation, give some data on the rates at which they operate, and evaluate their probable effects. Three depositional end-member systems, two submarine fan types (elongate and radial),...
Defining geologic Hazards for natural resources management using tree-ring analysis
J.V. DeGraff, S.S. Agard
1984, Environmental Geology and Water Sciences (6) 147-155
Landslides, avalanches, floods, and other geologic hazards impair natural resources management by jeopardizing public safety, damaging or restricting resource utilization, and necessitating expenditures for corrective measures The negative impact of geologic hazard events can be reduced by tailoring resources management to hazard potential of an area This requires assessment of...
Specific-lon electrode determinations of sulfide preconcentrated from San Francisco Bay waters
D.V. Vivit, J.W. Ball, E. A. Jenne
1984, Environmental Geology and Water Sciences (6) 79-90
Measurements of low-level dissolved-sulfide concentrations in estuarine water from San Francisco Bay have been made using the sulfide-specific electrode after preservation, separation, and preconcentration of the sulfide species. The separation and preconcentration were acheived by coprecipitation of ZnS with Zn(OH)2 followed by collection and dissolution of the precipitate, giving concentration...
Aftermath of comfan-Comments, not solutions
W. R. Normark, N.E. Barnes
1984, Geo-Marine Letters (3) 223-224
Comparison of descriptions of fans in this volume demonstrates the major problems in developing general models that incorporate modern fans and ancient turbidite sequences. Attempts to develop a unifying fan model are presently premature. The most pressing need is refined definition of the primary common characteristics of submarine turbidite systems...
The Astoria Fan: An elongate type fan
C.H. Nelson
1984, Geo-Marine Letters (3) 65-70
The Astoria Fan, a modern system, is located on a subducting oceanic crust and fills a north-south-trending trench along the Oregon continental margin. Well-developed channels cross the entire fan length; they display classic inner-fan leveed profiles but evolve into distributaries in the midfan area where the gradient decreases sharply. During...
Delgada Fan: Preliminary interpretation of channel development
W. R. Normark, C. E. Gutmacher
1984, Geo-Marine Letters (3) 79-83
The Delgada Fan, an irregularly shaped turbidite deposit extending more than 350 km offshore from northern California, consists of two large leveed-valley units each fed by a separate complex of coalescing submarine canyons and slope gullies. Although the leveed-valley units head within 25 km of each other, both appear to...
Fouling community of the Loxahatchee River estuary, Florida, 1980-81
B. F. McPherson, W. H. Sonntag, M. Sabanskas
1984, Estuaries (7) 149-157
Monthly growth of the fouling community at eight test panel sites in the Loxahatchee River Estuary was related to salinity and temperature. Growth was lowest in January 1981 (averaging 23 g per m2, dry weight), and increased during spring and early summer with increasing water temperature. Maximum growth occurred during...
Turbidite facies in an ancient subduction complex: Torlesse terrane, New Zealand
T.C. MacKinnon, D. G. Howell
1984, Geo-Marine Letters (3) 211-216
The Torlesse terrane of New Zealand is an ancient subduction complex consisting of deformed turbidite-facies rocks. These are mainly thick-bedded sandstone (facies B and C) with subordinate mudstone (facies D and E), comparable to inner- and middle-fan deposits of a submarine fan. Strata were deposited in trench-floor and trench-slope settings...
Miocene Blanca Fan, Northern Channel Islands, California: Small fans reflecting tectonism and volcanism
H. McLean, D. G. Howell
1984, Geo-Marine Letters (3) 161-166
Blanca fan is a submarine fan composed of Miocene volcaniclastic strata. Parts of the fan system are exposed on Santa Cruz and Santa Rosa Islands, and possibly correlative strata crop out on San Miguel and Santa Catalina Islands. The Blanca fan and underlying breccia reflect regional transcurrent faulting in the...
Trench-fill submarine-fan facies associations of the Upper Cretaceous Chugach terrane, southern Alaska
T. H. Nilsen
1984, Geo-Marine Letters (3) 179-185
Turbidites of the Upper Cretaceous Chugach terrane of southern Alaska were deposited in a trench during northward-directed subduction. The fault-bounded outcrop belt of the Chugach terrane is about 2000-km long and 100-km wide and was accreted to Alaska during the Cenozoic. Turbidites are at least 5000 m thick, are extensively...
The Crati Submarine Fan, Ionian Sea
F.R. Lucchi, A. Colella, G. Gabbianelli, S. Rossi, W. R. Normark
1984, Geo-Marine Letters (3) 71-77
The Crati Fan is located in the tectonically active submerged extension of the Apennines chain and foretrough. The small fan system is growing in a relatively shallow (200 to 450 m), elongate nearshore basin receiving abundant input from the Crati River. The fan is characterized by a short, steep, channelized...
Formalin preservation of avian blood for metal and DDE analysis
Stanley N. Wiemeyer, John F. Moore, B.M. Mulhern
1984, Bulletin of Environmental Contamination and Toxicology (33) 525-532
