SEDIMENTATION IN NORTHERN AND CENTRAL PARTS OF THE INDIAN OCEAN (Osadkoobrazovanie v Servernoi i Tsentralnoi Chastyakh Indiiskogo Okeana),
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)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1970
- Accession Number
- AD0709322
Entities
People
- P. L. Bezrukov
Organizations
- Naval Oceanographic Office