Results 141 to 150 of about 1,521 (161)

What factors control the development of moats and their associated contourite drifts?

2021
The interaction of sedimentary systems with oceanographic processes in deep-water environments is still not well understood, despite its importance for improving paleoreconstructions and for understanding source-to-sink sediment transport. The aim of this study is to improve our understanding of sediment deposits formed by the action of bottom currents
Wilckens , Henriette , Miramontes , Elda , Schwenk , Tilmann , Lüdmann , Thomas , Betzler , Christian , Hernandez-Molina , Javier , Spieß , Volkhard , Cattaneo , Antonio   +7 more
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Deep-Water Contourite Drifts in the West of North-China Platform

Applied Mechanics and Materials, 2013
The middle Ordovician of Pingliang area on the west margin of North-China platform is represented by a succession of deep-water sediments in which contourites are well-developed. Contour current deposits are well-developed. The contourites can be classified into:calcarenitic contourite, calcisiltitic contourite and calcilutitic contourite.
Shun She Luo, Zhen Zhong Gao, You Bin He, Qi Qi Lv, Ying Meng   +4 more
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Chapter 24 Palaeoceanographic Significance of Contourite Drifts

2008
Publisher Summary This chapter provides an overview of the recent methods and advances across the spectrum of disciplines that are relevant for contourite-based palaeoceanography. The broad range of time scales and earth-system processes that may be addressed by contourite research is highlighted by three general themes: oceanic gateways, past warm ...
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Sediment drifts and contourites on the continental margin off northwest Britain

Sedimentary Geology, 1998
Abstract Seismic reflection profiles and short cores from the continental margin off northwest Britain have revealed a variety of sediment-drift styles and contourite deposits preserved in the northeast Rockall Trough and Faeroe-Shetland Channel. The sediment drifts include: (1) distinctly mounded elongate drifts, both single- and multi-crested; (2 ...
M.S. Stoker, M.C. Akhurst, J.A. Howe, D.A.V. Stow   +3 more
openaire   +1 more source

Sediment Transport Over the Hatton and Gardar Contourite Drifts

SEPM Journal of Sedimentary Research, 1980
ABSTRACT The contrasted modes of transport and deposition of sandy and muddy contourites were examined by hydrographic, photographic, lithologic, and seismic data from Hatton and Gardar sediment drifts in the Iceland Basin, northeastern Atlantic Ocean. Gardar Drift is made of muddy contourites deposited from Iceland-Scotland Overflow Water with a thick
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Facies and ichnology of an Upper Cretaceous chalk contourite drift complex, eastern Denmark, and the validity of contourite facies models

Journal of the Geological Society, 2012
The Upper Cretaceous chalk of the Danish Basin has been interpreted as a major contourite complex on the basis of high-resolution seismic data. The sea floor had a pronounced topography with kilometre-wide ridges and valleys up to almost 200 m deep, interpreted to have been formed by contour-parallel bottom currents. Only few ancient contourite systems
Rasmussen, Susanne Lil, Surlyk, Finn
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Seismic analyses of Cenozoic contourite drift development in the Northern Norwegian Sea

Marine Geophysical Researches, 2001
Four drift accumulations have been identified on the continental margin of northern Norway; the Lofoten Drift, the Vesteralen Drift, the Nyk Drift and the Sklinnadjupet Drift. Based on seismic character these drifts were found to belong to two main groups; (1) mounded, elongated, upslope accretion drifts (Lofoten Drift, Vesteralen Drift and Nyk Drift),
Jan Sverre Laberg, Torbjørn Dahlgren, Tore O. Vorren, Haflidi Haflidason, Petter Bryn   +4 more
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Neogene palaeoceanographic changes recorded in a carbonate contourite drift (Santaren Channel, Bahamas)

Sedimentology, 2019
AbstractThe Santaren Drift between the Great Bahama Bank and Cay Sal Bank (Bahamas) is closely linked to the development of the Gulf Stream and its shape and geometry record the local to global oceanographic, climatic and tectonic events since the Miocene.
Marco Paulat, Thomas Lüdmann, Christian Betzler, Gregor P. Eberli   +3 more
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Late Pleistocene and Holocene contourite drift in Lake Prespa (Albania/F.Y.R. of Macedonia/Greece)

Quaternary International, 2012
Hydro-acoustic surveys and coring campaigns at Lake Prespa were carried out between 2007 and 2009.
Wagner B., Aufgebauer A., Vogel H., ZANCHETTA, GIOVANNI, Sulpizio R., Damaschke M.   +5 more
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Bottom-current sediment waves, sediment drifts and contourites in the northern Rockall Trough

Marine Geology, 2002
Four types of large-scale sediment bedform occur in the northeast Rockall Trough: broad sheeted drifts, elongate drifts, sediment waves and thin contourite sheets. A large sheeted drift occupies the northern basin; its crest can be traced for 40 km perpendicular to the bottom-current flow direction.
Masson, D.G., Howe, J.A., Stoker, M.S.
openaire   +3 more sources