Accession Number : AD0809770

Title :   MASS PROPERTY RELATIONSHIPS OF SEDIMENTS FROM THE HATTERAS ABYSSAL PLAIN.

Descriptive Note : Informal manuscript,

Corporate Author : NAVAL OCEANOGRAPHIC OFFICE NSTL STATION MS

Personal Author(s) : Stiles, Newell T.

Report Date : FEB 1967

Pagination or Media Count : 110

Abstract : Sediments in this area are representative of two types of depositional processes, a slow and continuous particle-by-particle accumulation as shown by pelagic red clays, and a more rapid turbidity type deposition as indicated by graded silt layers. An increase in quantity of these interbedded layers to the south indicates both an apparent source for these materials as well as an increase in deposition rate in the direction. Distribution of these silt layers is primarily influenced by the northwest trending seaknolls in the southern portion of the area. Shear strength values show an increase to the north. This increase coincides with an increase in the moisture content, carbonate content, and clay-size fraction. The cause for this relationship is attributed to the lower rate of sediment accumulation which provides the necessary time required for the clays to consolidate. The slightest increase in carbonate content suggests that a portion of this increased strength may be the result of authigenic cementation. (Author)

Descriptors :   (*SEDIMENTATION, ATLANTIC OCEAN), (*OCEAN BOTTOM, SEDIMENTATION), NORTH CAROLINA, MARINE GEOLOGY, OCEAN BOTTOM TOPOGRAPHY, CLAY, SILT, DEPOSITS, PARTICLE SIZE, SHEAR STRESSES, OCEANOGRAPHIC DATA, MEASUREMENT, DEEP WATER, TABLES(DATA).

Subject Categories : Physical and Dynamic Oceanography
      Geology, Geochemistry and Mineralogy

Distribution Statement : APPROVED FOR PUBLIC RELEASE