Results 181 to 190 of about 2,782 (220)

Contourite Drifts and Associated Bedforms

2017
Contourites, also known as alongslope deposits, are sediments that have been deposited or significantly affected by the persistent action of contour (bottom) currents. Contourite drifts are the large-scale morphological expression of contourite deposition, up to 106 km2 in area and >1 km in thickness.
Ibimina Esentia, Dorrik Stow, Zeinab Smillie   +2 more
openaire   +1 more source

Characteristics of modern carbonate contourite drifts

Sedimentology, 2019
AbstractCarbonate environments inhabit the realm of the surface, intermediate and deep currents of the ocean circulation where they produce and continuously deliver material which is potentially deposited into contourite drifts. In the tropical realm, fine‐grained particles produced in shallow water and transported off‐bank by tidal, wind‐driven, and ...
Gregor P. Eberli, Christian Betzler
openaire   +1 more source

Contour Currents and Contourites of the Middle Caspian

Doklady Earth Sciences, 2018
Experimental data have shown that the cyclonic circulation in the Middle Caspian is a seasonal contour current surrounding the Middle Caspian megabasin along the slope during the cold half of the year. This current and the enormous influx of suspended particulate matter on the western slope of the Middle Caspian Basin provide conditions for the ...
A. K. Ambrosimov, L. I. Lobkovsky, A. G. Rosljakov   +2 more
openaire   +1 more source

Fossil Contourites in Lower Niesenflysch, Switzerland

SEPM Journal of Sedimentary Research, 1972
ABSTRACT The lower part of the Maastrichtian-Paleocene Niesenflyseh near Adelboden, Switzerland, consists of shale and shale--sandstone alternations. The sandstone beds normally are 4 to 5 cm thick, have distinct upper and lower bedding planes and are rather well sorted.
openaire   +1 more source

Chapter 20 Shallow-Water Contourites

2008
Publisher Summary This chapter focuses on some quaternary examples of shallow-water contourites from a wide variety of quaternary geological settings such as the outer shelf of the SE-African continental margin and the Mediterranean shallow-water contourite deposits.
G. Verdicchio, F. Trincardi
openaire   +1 more source

Contourite Anticlines as Exploration Objectives: ABSTRACT

AAPG Bulletin, 1979
Regional seismic profiles off the east coast of the United States gathered by the University of Texas Marine Science Institute and Woods Hole Oceanographic Institute have crossed three types of contourite anticlines. They are symmetric, asymmetric, and half-anticlinal forms and have up to 3,000 ft (1,000 m) of relief.
openaire   +1 more source

Chapter 22 High-Latitude Contourites

2008
Publisher Summary This chapter provides an overview of the best-known Neogene and Quaternary glacigenic contourite deposits in both hemispheres. The Antarctic continental margin and the northern North Atlantic Margin are considered. In mid- to high-latitude areas, an ice-rafted component is commonly presentwithin sedimentary drifts deposited or ...
T. van Weering, M. Stoker, M. Rebesco
openaire   +1 more source

Chapter 9 The Nature of Contourite Deposition

2008
Publisher Summary Contourites occur closely interbedded with the other deep-water facies. They range from very fine-grained to relatively coarse-grained deposits and include siliciclastic, bioclastic, volcaniclastic, and chemogenic compositional varieties. This chapter reviews the depositional mechanisms of contourites at the large, intermediate, and
openaire   +1 more source

Chapter 3 Methods for Contourite Research

2008
Publisher Summary This chapter illustrates the range of techniques that can be employed to investigate contourite sedimentation in the deep sea using hydrographic, geophysical, and sedimentological studies. The range of processes contributing to current-influenced sedimentation in the deep sea can be extremely diverse and at a variety of scales from ...
openaire   +1 more source

Chapter 23 Economic Relevance of Contourites

2008
Publisher Summary This chapter discusses the economic relevance of contourites. The recognition of the economic significance of contourites is pushed forward due to the continuous advance of hydrocarbon exploration toward deeper waters and the need to better determine the origin of some reservoir deposits lacking “typical” turbidite signature.
openaire   +1 more source