Results 171 to 180 of about 2,782 (220)

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

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

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

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

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

Fossil contourites: a critical review

Sedimentary Geology, 1998
Abstract Despite three decades of study, there is still great controversy over the recognition and interpretation of fossil contourites exposed in ancient series on land. In order to best examine this problem, we briefly review the evidence from modern systems, including the many examples of Cenozoic contourites that have been recovered from DSDP/ODP
Dorrik A.V. Stow, Jean-Claude Faugères, Adriano Viana, Eliane Gonthier   +3 more
openaire   +1 more source

North Atlantic contourites: an overview

Geological Society, London, Special Publications, 1984
Summary We present a brief overview of known bottom circulation and Tertiary to Recent sediment drifts in the North Atlantic Ocean, and outline the distinctive features of contourite sediments recovered from these drifts. There is a gradation of structural and textural characteristics between the finer-grained clayey and muddy contourites and
D. A. V. Stow, J. A. Holbrook
openaire   +1 more source

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
openaire   +1 more source

Contour Currents and Contourite Drifts

2011
Abstract This chapter provides a current state-of-the-art on the contourite systems with a major focus on the modern systems (drifts), the processes of deposition and the diagnostic sedimentological and seismic features. A short overview of the ancient contourite problem is also provided. Firstly, the history of contourites is briefly reminded since
Jean-Claude Faugères, Thierry Mulder
openaire   +1 more source