Open AccessDOI
Physical properties of marine sediments
John E. Nafe,Charles L. Drake +1 more
TLDR
In this paper, it was shown that seafloor sediments that blanket the ocean floor are of widely varying thickness but seismic observations indicate that 200 to 400 meters in the Pacific and one kilometer in the Atlantic are fairly typical values for deep water.Abstract:
: The unconsolidated sediments that blanket the ocean floor are of widely varying thickness but seismic observations indicate that 200 to 400 meters in the Pacific and one kilometer in the Atlantic are fairly typical values for deep water. At present direct observation of these sediments is limited to such samples as may be recovered by dredging or coring operations, for drilling has been carried out only in the shallow waters of the coastal shelves. Knowledge of the physical properties of the great bulk of the sediments deeper than the few tens of feet reached by coring equipment is thus necessarily derived from geophysical observations.read more
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Middle Eocene to earliest Oligocene development in the eastern North Sea Basin: Biostratigraphy, magnetostratigraphy and palaeoenvironment of the Kysing-4 borehole, Denmark
TL;DR: The Kysing-4 borehole in central Jutland is unique for high northern latitudes because it comprises an almost complete Middle Eocene to lowermost Oligocene succession mostly in a highly calcareous facies with abundant well preserved microfossils and from an upper bathyal environment.
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Geotechnical properties of ocean sediments recovered with giant piston corer: 1. Gulf of Maine
TL;DR: A large-diameter (14 cm) long piston corer has been used successfully to obtain relatively undisturbed sediment samples in water depths from 80 to 5500 meters with recovery ratios ranging between 0.76 and 0.87.
Journal ArticleDOI
A new geological model to explain the gravity gradient across Exmoor, north Devon
TL;DR: In this article, it is shown that the gravity field across Exmoor and the Bristol Channel can be explained by a simple geological model in which a thick sequence of relatively low density Lower Palaeozoic or late Precambrian rocks occupies the core of this culmination.
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Source Parameters for the 28 April 2007 Mw 4.0 Earthquake in Folkestone, United Kingdom
TL;DR: In this article, the authors derived a near-surface attenuation factor κ = 0.02 from the aftershock data that were used in the spectral analysis of the mainshock.