Results 211 to 220 of about 756 (262)

A submarine fan in the Mesa Central, Mexico

Journal of South American Earth Sciences, 2000
Abstract The contact between the Guerrero and Sierra Madre tectonostratigraphic terranes has been proposed to lie in the Mesa Central, east of the city of Zacatecas. Marine Triassic units have been assigned to the Guerrero Terrane. It is here proposed that this contact occurs to the west of the city of Zacatecas and the Triassic marine sequence ...
G Silva-Romo, J Arellano-Gil, C Mendoza-Rosales, J Nieto-Obregón   +3 more
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Deep-Water Turbidites and Submarine Fans

2006
Abstract Depositional environments of deep-water deposits commonly are complex and consequently do not neatly fit any single facies model. Rather than developing specific models we discuss these deposits within the context of depositional elements and first principles of process sedimentology. Depositional elements are described using
Henry W. Posamentier, Roger G. Walker
openaire   +1 more source

Calciclastic submarine fans: An integrated overview

Earth-Science Reviews, 2008
Abstract Calciclastic submarine fans are rare in the stratigraphic record and no bona fide present-day analogue has been described to date. Possibly because of that, and although calciclastic submarine fans have long intrigued deep-water carbonate sedimentologists, they have largely been overlooked by the academic and industrial communities.
Aitor Payros, Victoriano Pujalte
openaire   +1 more source

Submarine Fans and Their Channels, Levees, and Lobes

2017
Submarine fans are complex morphological features that develop on the continental slope, rise and abyssal plain, normally at the mouths of submarine canyons. They are constructed principally from the deposits of sediment gravity flows (mainly turbidity currents and debris flows) as terrigenous and shallow marine sediment is redistributed into deeper ...
Mark E. Deptuck, Zoltán Sylvester
openaire   +1 more source

Eustatic Control of Submarine Fan Development

1985
Global changes in sea-level control both siliciclastic and calciclastic turbidity-current deposition in the deep sea. On modern active and passive margins, growth of submarine fans occurred mainly during the Pleistocene glacials (low sea-level). During interglacials (high sea-level), most fans were dormant.
G. Shanmugam, R. J. Moiola, J. E. Damuth
openaire   +1 more source

Submarine fan complex offshore Mauritania

54th EAEG Meeting, 1992
A giant fan complex lies offshore Mauritania, in moderate waters. It extends over 160 km in the east-west direction, from the shelf-break to the west, and 80 km in the north-south direction. It has accumulated over more than 3000 metres of deposits from Aptian to Paleocene in age.
Y. Gou, A. Reymond
openaire   +1 more source

Submarine Canyons and Fan Valleys

1974
Abstract Dispersal of sediment across a submarine fan is controlled by a distributary system of migrating fan valleys, which are generally contiguous with a feeding canyon that provides a point source for the sediments moving onto the sea floor.
openaire   +1 more source

Experiments on incipient channelization of submarine fans

Journal of Hydraulic Research, 2002
Experiments on the formation of channelized submarine fans by the passage of successive turbidity currents are presented. Channels similar to subaerial rivers are found in many submarine fans. The inception of channels on submarine fans, which are essentially depositional environments, can be explained in terms of the lateral distribution of the rates ...
Jasim Imran, Gary Parker, Peter Harff
openaire   +1 more source

The Crati Submarine Fan, Ionian Sea

Geo-Marine Letters, 1983
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.
Franco Ricci Lucchi, Albina Colella, Gianni Gabbianelli, Sergio Rossi, William R. Normark   +4 more
openaire   +1 more source

Quantitative analysis of the geometry of submarine channels: Implications for the classification of submarine fans

Geology, 1992
Certain attributes of submarine channels measured from GLORIA sidescan sonar data from 16 different submarine fans indicate similarities with fluviatile systems. Channel width, depth, meander radius and wavelength, sinuosity, and gradient were measured. This approach makes it possible to identify high- sinuosity, low-gradient (e.g., Indus Fan channels)
J. D. Clark, N. H. Kenyon, K. T. Pickering   +2 more
openaire   +1 more source