Skip to main content
U.S. flag

An official website of the United States government

Publications

Scientific literature and information products produced by Woods Hole Coastal and Marine Science Center staff

Filter Total Items: 1737

Patterns of late Cenozoic volcanic and tectonic activity in the West Antarctic rift system revealed by aeromagnetic surveys Patterns of late Cenozoic volcanic and tectonic activity in the West Antarctic rift system revealed by aeromagnetic surveys

Aeromagnetic surveys, spaced ≤5 km, over widely separated areas of the largely ice- and sea-covered West Antarctic rift system, reveal similar patterns of 100- to 1700-nT, shallow-source magnetic anomalies interpreted as evidence of extensive late Cenozoic volcanism. We use the aeromagnetic data to extend the volcanic rift interpretation over West Antarctica starting with anomalies over...
Authors
John C. Behrendt, R. Saltus, D. Damaske, A. McCafferty, C. A. Finn, D. Blankenship, R.E. Bell

Osmium isotopes and silver as tracers of anthropogenic metals in sediments from Massachusetts and Cape Cod bays Osmium isotopes and silver as tracers of anthropogenic metals in sediments from Massachusetts and Cape Cod bays

High concentrations of osmium (Os) and silver (Ag) and low 187Os/186Os ratios in Boston sewage make these elements sensitive tracers of the influence of sewage on marine sediments in Massachusetts and Cape Cod bays. Pristine marine sediments have Ag concentrations more than 200 times lower than sewage sludge, Os concentrations 10-40 times lower, and 187Os/186Os ratios six times higher...
Authors
G.E. Ravizza, Michael H. Bothner

Silt heavy-mineral distributions off the Southeastern United States Silt heavy-mineral distributions off the Southeastern United States

Until recently heavy-mineral studies of marine sediments were largely restricted to sand fractions. New techniques permitting analysis of decalcified silt fractions have been applied to sediments off the southeastern United States. Our data, which confirm predictions from the basic relationship among grain size, specific gravity, and equivalent hydraulic transport behavior, show that
Authors
L.J. Poppe, J.A. Commeau

Impact origin of the Chesapeake Bay structure and the source of the North American tektites Impact origin of the Chesapeake Bay structure and the source of the North American tektites

Seismic profiles, drill core samples, and gravity data suggest that a complex impact crater ~35.5 million years old and 90 kilometers in diameter is buried beneath the lower Chesapeake Bay. The breccia that fills the structure contains evidence of shock metamorphism, including impact melt breccias and multiple sets of planar deformation features (shock lamellae) in quartz and feldspar...
Authors
C. Koeberl, C. W. Poag, W.U. Reimold, D. Brandt

Character, paleoenvironment, rate of accumulation, and evidence for seismic triggering of Holocene turbidites, Canada Abyssal Plain, Arctic Ocean Character, paleoenvironment, rate of accumulation, and evidence for seismic triggering of Holocene turbidites, Canada Abyssal Plain, Arctic Ocean

Four box cores and one piston core show that Holocene sedimentation on the southern Canada Abyssal Plain for the last 8010 ± 120 yr has consisted of a continuing rain of pelagic organic and ice-rafted clastic sediment with a net accumulation rate during the late Holocene of ⩽10 mm/1000 yr, and episodically emplaced turbidites 1–5 m thick deposited at intervals of 830 to 3450 yr (average...
Authors
A. Grantz, R. L. Phillips, M. W. Mullen, S. W. Starratt, Glenn A. Jones, A.S. Naidu, B. P. Finney

Images of crust beneath southern California will aid study of earthquakes and their effects Images of crust beneath southern California will aid study of earthquakes and their effects

The Whittier Narrows earthquake of 1987 and the Northridge earthquake of 1991 highlighted the earthquake hazards associated with buried faults in the Los Angeles region. A more thorough knowledge of the subsurface structure of southern California is needed to reveal these and other buried faults and to aid us in understanding how the earthquake-producing machinery works in this region.
Authors
G. S. Fuis, D. A. Okaya, R.W. Clayton, W. J. Lutter, T. Ryberg, T.M. Brocher, T.M. Henyey, M.L. Benthien, P.M. Davis, J. Mori, R. D. Catchings, Uri S. ten Brink, M.D. Kohler, Kim D. Klitgord, R. G. Bohannon

Seismic reflection profile of the Blake Ridge near sites 994, 995, and 997 Seismic reflection profile of the Blake Ridge near sites 994, 995, and 997

Seismic reflection profiles near Sites 994, 995, and 997 were collected with seismic sources that provide maximum resolution with adequate power to image the zone of gas hydrate stability and the region direction beneath it. The overall structure of the sediment drift deposit that constitutes the Blake Ridge consists of southwestward-dipping strata. These strata are approximately...
Authors
William P. Dillon, Deborah R. Hutchinson, Rebecca M. Drury

Mineral intergrowths replaced by "elbow-twinned" rutile in altered rocks Mineral intergrowths replaced by "elbow-twinned" rutile in altered rocks

Some aggregates of rutile, classically considered to be "elbow" twinned, instead are topotactic replacements of ilmenite or other hexagonal titaniferous precursors. Twinned rutile can be differentiated from the reticulated rutile of topotactic replacements by the angle of prism intersections, junction morphology, and the overall form of the aggregate. In a special case of topotactic...
Authors
E. R. Force, R. P. Richards, K. M. Scott, P. C. Valentine, N.S. Fishman
Was this page helpful?