Showing papers in "Marine Geology in 1975"

TL;DR: In this article, the S.T.A.R. diagram is used to model the relationship between salinity and temperature in open shelves of marine, carbonate sands from shelf areas between the equator and latitudes 60°S and 60°N.

TL;DR: In this paper, the authors divide the floor of the western equatorial Atlantic Ocean into several distinct provinces based on detailed characteristics of the bottom echos recorded with short-ping.

TL;DR: In this paper, it is suggested that the ridge fields are analogous to the shoal-retreat massifs of the Middle Atlantic Bight in that they have been inherited from a nearshore regime during the course of the Holocene transgression.

TL;DR: In this paper, Dinocysts and sporomorphs are recorded from eleven sedimentary samples in two traverses from South West Africa, and the dinocyst assemblages are dominated by Spiniferites Ramosus ramosus and Operculodinium centrocarpum, although other species are usually present particularly in more offshore samples.

TL;DR: In this article, the authors used side-scan sonar surveys to detect large-scale longitudinal bed forms in the Langeland Belt, including sand ribbons, erosional areas down-current from obstacles and sand shadows.

TL;DR: In this article, a qualitative description is proposed that relates sediment movement, intermittent high bottom stress and the degree of turbulence through the unifying mechanism of the burst-sweep cycle.

TL;DR: Foraminiferal assemblages are distinctly divided into calcareous or arenaceous populations and reflect CaCO3 dissolution in some regions of the Weddell Sea as discussed by the authors.

TL;DR: The New Zealand continental terrace is mantled mainly by terrigenous and biogenic sediments associated with subordinate but locally important authigenic, volcanogenic and residual components as discussed by the authors.

TL;DR: A nearly continuous zone of sediment waves is present on the lower continental rise off western Morocco which parallels the regional bathymetric trends as discussed by the authors, and the individual sediment waves within the zone migrate upslope with time and, in general, also trend parallel to the regional contours.

TL;DR: Palagonite and manganese are the main coating materials encountered on the chilled margins of the pillow-lava fragments in the Rift Valley as discussed by the authors, and they are associated with montmorillonite and chlorite.

TL;DR: A left lateral offset of anomalies 20 and 21 at 65°N indicates a major fracture zone related to the Greenland continental margin offset nearby as discussed by the authors, indicating either downwarped continental material or an early rift formed prior to the separation of Greenland from the European plate.

TL;DR: According to geophysical data, the Mediterranean Sea depressions are noted for a peculiar type of the earth's crust as mentioned in this paper, the sedimentary rock sequence is of great thickness (8-15 km) and is of platform-type dislocation.

TL;DR: In this article, alternating up-and downcanyon currents with velocities up to 50 cm/sec are found in submarine canyons, and the matching of curves from adjacent stations is obtained by time shifts.

TL;DR: The hardness of marine sediments in the nearshore waters of Long Island Sound has been measured by penetration tests made both in situ and in the laboratory as discussed by the authors, and it was found that penetration of the sediment-water interface is rate-insensitive and, for a given driving stress, independent of indentor size.

TL;DR: Three different types of dune-like features in depths between 2,500 and 4,000 m were observed on what is supposed to be the outer Magdalena Fan, Colombian Basin this paper.

TL;DR: The partial composition of 241 sediment samples from the Aegean Sea, determined for Ca, Mg, Al, Ti, Fe, Mn, Ni, Cr, Pb, Cu, and Zn, can be largely explained by admixture of terrigenous components of variable composition and biogenic components poor in minor elements.

TL;DR: In this article, the authors investigated the role of terrigenous sources in the formation of suspensate-rich bottom waters in the central and western Mediterranean and found that terrigenes are relatively more important in suspended sediments than in bottom sediments where kaolinite is dominant.

TL;DR: In previous attempts to adapt the relationship for use in studies of marine-sediment transport, the flow measurement has been standardized at a level 100 cm above the bed, and the particularized value of the drag coefficient has been designated as C100 as discussed by the authors.

TL;DR: A recent survey of surface and subsurface sediment to a maximum depth of 80 m below the sea floor showed that typical values of 0.03 p.p.m. and anomalous values between 0.2 and 1.3 p.m as discussed by the authors indicate that the contamination effects of mining may be no greater than natural concentration processes in the Seward Peninsula region.

TL;DR: In this article, side-scan sonar traverses showed that individual reef exposures are areally irregular and ranged in size from roughly 1 to 100,000 m 2, and were best developed off Chioggia, Italy, in water depths ranging from 17 to 24 m.

TL;DR: A bathymetric survey of the Gilliss Seamount, in the northwest Atlantic Basin, using a multi-beam sonar array system reveals an extremely complex morphologic character of this feature as discussed by the authors.

TL;DR: In this paper, selective chemical attack has been used to separate surface marine sediments into organic, non-detrital and detrital components, and the concentrations of iron, manganese, copper and zinc in each fraction determined.

TL;DR: In this article, 17 piston cores were collected at 25km intervals following the 3500m isobath along a 400 km portion of the continental rise off the southeastern United States.

TL;DR: The concentrations of the clay minerals montmorillonite and illite have been determined in 28 samples of particulate material from surface (0-∼5 m) waters along the eastern margins of the Atlantic Ocean, and the concentrations of chlorite and kaolinite in nineteen of the samples.

TL;DR: In this article, the oxygen isotopic composition of the clay fraction in Recent argillaceous sediments in western Europe shows regional differences, the δ 18 SMOW values varying between + 15.8 and + 21.7

TL;DR: In this article, the oxygen isotopic composition of the clay fraction in Recent argillaceous sediments in western Europe shows regional differences, the δ 18 SMOW values varying between + 15.8 and + 21.7