Accession Number : AD0709322

Title :   SEDIMENTATION IN NORTHERN AND CENTRAL PARTS OF THE INDIAN OCEAN (Osadkoobrazovanie v Servernoi i Tsentralnoi Chastyakh Indiiskogo Okeana),

Corporate Author : NAVAL OCEANOGRAPHIC OFFICE WASHINGTON D C

Personal Author(s) : Bezrukov,P. L.

Report Date : 1970

Pagination or Media Count : 19

Abstract : In 1959-62 during three voyages of the r/v 'Vityaz' 270 grab samples and 256 cores of sediments, from 1 to 15m long were collected in the central and northern part of the Indian Ocean including the Arabian Sea, the Bay of Bengal and the Andaman Sea. It is possible to distinguish the following sediments by their genetic composition in the northern part of the Indian Ocean: I. Terrigenous; II. Volcanogenous; III. Organogenous; (1) calcareous-foraminiferal ooze, pteropod ooze, coral sediments; (2) siliceous-radiolarian ooze, diatoms ooze; IV. Polygenous (red and grey clays); V. Chemogenous (manganese nodules). More fractional types of sediments are present in each group by their granulometric composition. Numerous outcrops of hard crops mainly basalts were found on the ocean bottom. The serpentinites were found on the surface of the Arabian-Indian Ridge. (Author)

Descriptors :   (*OCEAN BOTTOM SAMPLING, INDIAN OCEAN), SEDIMENTATION, PALEONTOLOGY, FORAMINIFERA, RADIOLARIA, ALGAE, MUD, MANGANESE, CLAY MINERALS, BASALT, CALCIUM COMPOUNDS, BAYS, ARABIA, USSR

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

Distribution Statement : APPROVED FOR PUBLIC RELEASE