Bottom sediments of the Eastern Antarctic and the southern Indian Ocean

During the voyage of the Soviet Marine Antarctic Expedition on the Ob in 1955–1957, much new bottom sediment material was obtained in the Indian Ocean sector of the Antarctic and the southern Indian Ocean. The first cores as long as 16 m in this general area were taken, as well was many more up to 4 to 5 m long. Although detailed studies have not yet been completed, it is nevertheless possible to make a preliminary report on the development and properties of the main types of sediments and the rate of sedimentation at present in this part of the Antarctic. There are also some data on the thickness of ‘iceberg’ and diatom sediments.