Results 91 to 100 of about 148 (140)

Identification of ancient sandy contourites

Geology, 1981
Proposed criteria for the identification of ancient sandy contourites include occurrence (thin beds, reworked sandy turbidites, coarse lag), structure (bioturbated, no regular vertical sequence, orientation of cross-lamination perpendicular to regional downslope paleocurrents), grain size (silt or sand, little mud, low or negative skewness), fabric ...
J.P.B. Lovell, D.A.V. Stow
exaly   +2 more sources

Deepwater ichnology: New observations on contourites

2022
FRANCISCO Rodríguez-Tovar, Dorador J, Olmo Miguez-Salas   +2 more
exaly   +2 more sources

The concept of deep-sea contourites

Sedimentary Geology, 1993
C D Hollister
exaly   +2 more sources

Contourite facies model: Improving contourite characterization based on the ichnological analysis

Sedimentary Geology, 2019
Abstract The calcareous contourites from the Late Oligocene and Early Miocene in the Petra Tou Romiou type section (southern Cyprus) have been studied in detail, being regarded as outstanding examples of fossil bioclastic contourites and representative of the standard facies model of contourite bigradational sequence. These bigradational sequences of
Francisco Javier Rodríguez-Tovar, Francisco Javier Hernández-Molina, Heiko Hüneke, Estefanía Llave, Dorrik Stow   +4 more
openaire   +1 more source

Contourites in Lake Superior

Geology, 1980
Contour currents influence sedimentation in an area 15 km wide and 65 km long at the base of the slope off the Keweenaw Peninsula in Lake Superior, northwestern Michigan. Seismic-reflection profiles (3.5 kHz) from this area show distinct wavy reflectors in a scoured trough at a depth of 200 m at the base of the slope, hyperbolic echoes adjacent to the ...
Thomas C. Johnson, Thomas W. Carlson, James E. Evans   +2 more
openaire   +1 more source

The micropaleontological fingerprint on contourites and turbidites

2021
Bottom current-induced sediments such as contourites contain fundamental information for reconstructions of water mass properties and ocean circulation. The distinction between contourites and other deposits on continental slopes is particularly complex in areas where downslope and along-slope sedimentary processes co-occur. Clear and easily applicable
Schmidt , Johanna, Saupe , Anna, Petersen , Jassin, Bahr , André, Grunert , Patrick   +4 more
openaire   +1 more source

Contourites in the Fram Strait

Sedimentary Geology, 1993
Abstract Multichannel seismic reflection profiles from the Fram Strait show many features that can be attributed to bottom-current influence on the sediments, by comparison with well-known contourite sequences elsewhere. A greater than 2 km thick contourite drift with a smooth internal reflection pattern is observed northwest of Svalbard.
Ola Eiken, Karl Hinz
openaire   +1 more source

Muddy contourites in the Baltic Sea: an example of a shallow-water contourite system

Geological Society, London, Memoirs, 2002
Abstract Bottom currents in the Baltic Sea have had a pronounced effect on the nature and distribution of sediments throughout the Holocene. Due to the intermittent nature of water exchange between the North and the Baltic Seas, the flow of bottom currents is impermanent.
Vadim Sivkov, Vladimir Gorbatskiy, Alexey Kuleshov, Yury Zhurov   +3 more
openaire   +1 more source

Reservoir Potential in Contourites: Evidence of Coarse-grained Contourite Facies in the Mozambique Margin

Proceedings, 2018
Summary Although contourites and mixed turbidite/contourite depositional systems are significant to the oil industry, they are still relatively poorly known by this sector, and there is no present-day accepted sedimentological model for sandy contourites.
N. Babonneau, A. Genet, M. Rabineau, L. Droz, C. Robin, F. Raisson, E. Miramontes, D. Belleney, S. Révillon, M. Moulin, D. Aslanian   +10 more
openaire   +1 more source

North Atlantic contourite sand channels

Geological Society, London, Special Publications, 2007
Abstract Two sand-rich channelized depositional systems, formed by strong contour currents, were studied west of the Faeroe Bank Channel and in the Gulf of Cadiz. Both are areas beyond the exit of constrictions where water overflows from the Norwegian Sea and the Mediterranean Sea, respectively.
Akhmetzhanov, A., Kenyon, N.H., Habgood, E., Van der Mollen, A.S., Nielsen, T., Ivanov, M., Shashkin, P.   +6 more
openaire   +2 more sources