Publications
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Early Cretaceous shelf-edge deltas of the Baltimore Canyon Trough: principal sources for sediment gravity deposits of the northern Hatteras Basin Early Cretaceous shelf-edge deltas of the Baltimore Canyon Trough: principal sources for sediment gravity deposits of the northern Hatteras Basin
We present evidence that the principal sources for Early Cretaceous (Berriasian-Valanginian) gravity-flow deposits of the northern Hatteras Basin were three large shelf-edge deltas located along the outer margin of the Baltimore Canyon Trough, ∼ 100 km southeast of Cape Charles, Virginia, Ocean City, Maryland, and Long Branch, New Jersey. Sedimentary detritus from the central Appalachian...
Authors
C. Wylie Poag, B. Ann Swift, John S. Schlee, Mahlon M. Ball, Linda L. Sheetz
Accumulation of bank-top sediment on the western slope of Great Bahama Bank: rapid progradation of a carbonate megabank Accumulation of bank-top sediment on the western slope of Great Bahama Bank: rapid progradation of a carbonate megabank
High-resolution seismic profiles and submersible observations along the leeward slope of western Great Bahama Bank show large-scale export of bank-top sediment and rapid progradation of the slope during the Holocene. A wedge-shaped sequence, up to 90 m thick, is present along most of the slope and consists of predominantly aragonite mud derived from the bank since flooding of the...
Authors
R. Jude Wilber, John D. Milliman, Robert B. Halley
Multichannel seismic reflection surveys over the Antarctic continental margin relevant to petroleum resource studies Multichannel seismic reflection surveys over the Antarctic continental margin relevant to petroleum resource studies
More than 100,000 km of marine multichannel seismic profiles have been acquired over the continental margin of Antarctica since 1976 by scientific research programs of Australia, Brazil, France, Italy, Japan, Norway, Poland, United Kingdom, United States, U.S.S.R. and West Germany. Although scientific results are reported for most of these data, they also are relevant to petroleum...
Authors
John C. Behrendt
Summary of geotechnical and hydrologic data collected through April 30, 1990, for the Alani-Paty Landslide, Manoa Valley, Honolulu, Hawaii Summary of geotechnical and hydrologic data collected through April 30, 1990, for the Alani-Paty Landslide, Manoa Valley, Honolulu, Hawaii
No abstract available.
Authors
R.L. Baum, S.R. Spengler, J.D. Torikai, L.A. Liu
Preliminary map showing locations of landslides in El Yunque quadrangle, Puerto Rico Preliminary map showing locations of landslides in El Yunque quadrangle, Puerto Rico
No abstract available.
Authors
Manuel R. Guariguata, Matthew C. Larsen
Preliminary maps showing landslide deposits and related features in New Mexico Preliminary maps showing landslide deposits and related features in New Mexico
No abstract available.
Authors
Mauro Cardinali, Fausto Guzzetti, Earl E. Brabb
By
Geology, Energy, and Minerals Mission Area, Natural Hazards Mission Area, Energy Resources Program, Landslide Hazards Program, Mineral Resources Program, National Laboratories Program, Science and Decisions Center, Geologic Hazards Science Center, Geology, Minerals, Energy, and Geophysics Science Center
Rheological analysis of fine-grained natural debris-flow material Rheological analysis of fine-grained natural debris-flow material
Experiments were conducted on large samples of fine-grained material (???2mm) from a natural debris flow using a wide-gap concentric-cylinder viscometer. The rheological behavior of this material is compatible with a Bingham model at shear rates in excess of 5 sec. At lesser shear rates, rheological behavior of the material deviates from the Bingham model, and when sand concentration of...
Authors
Jon J. Major, Thomas C. Pierson
Summit Lake landslide and geomorphic history of Summit Lake basin, northwestern Nevada Summit Lake landslide and geomorphic history of Summit Lake basin, northwestern Nevada
The Summit Lake landslide, northwestern Nevada, composed of Early Miocene pyroclastic debris, Ashdown Tuff, and basalt and rhyolite of the Black Rock Range, blocked the upper Soldier Creek-Snow Creek drainage and impounded Summit Lake sometimes prior to 7840 yr B.P. The slide covers 8.2 km2 and has geomorphic features characteristic of long run-out landslides, such as lobate form...
Authors
B. Brandon Curry, W.N. Melhorn
Effect of wave-current interaction on wind-driven circulation in narrow, shallow embayments Effect of wave-current interaction on wind-driven circulation in narrow, shallow embayments
The effect of wind waves on the steady wind-driven circulation in a narrow, shallow bay is investigated with a two-dimensional (y, z) circulation model and the Grant and Madsen [1979] bottom-boundary layer model, which includes wave-current interaction. A constant wind stress is applied in the along-channel x direction to a channel with a constant cross-sectional profile h(y). The wind...
Authors
Richard P. Signell, Robert C. Beardsley, H. C. Graber, A. Capotondi
Preliminary geomagnetic data, College Observatory, Fairbanks, Alaska: September 1990 Preliminary geomagnetic data, College Observatory, Fairbanks, Alaska: September 1990
No abstract available.
Authors
John B. Townshend, Richard V. O’Connell, Carol Ann Varner
Preliminary geomagnetic data, College Observatory, Fairbanks, Alaska: May 1990 Preliminary geomagnetic data, College Observatory, Fairbanks, Alaska: May 1990
No abstract available.
Authors
John B. Townshend, Richard V. O’Connell, Carol Ann Varner
Integration of COCORP deep reflection and magnetic anomaly analysis in the southeastern United States: Implications for origin of the Brunswick and East Coast magnetic anomalies: Alternative interpretation and reply Integration of COCORP deep reflection and magnetic anomaly analysis in the southeastern United States: Implications for origin of the Brunswick and East Coast magnetic anomalies: Alternative interpretation and reply
Integration of magnetic anomaly analysis with COCORP deep reflection data from the southeastern United States provides three new constraints on the interpretation of the Brunswick and East Coast magnetic anomalies, as well as on the reflection data. These are as follows. (1) The source of the Brunswick anomaly lies within the deep crust. This anomaly is not caused by a Mesozoic rift...
Authors
Deborah R. Hutchinson, Kim D. Klitgord, Anne M. Trehu, John H. McBride, K. D. Nelson