The tectonics of the Mid-Indian Ocean Ridge and the petrography of the solid rocks of its rift zones

Abstract

The structure of the Mid-Indian Ridge has been studied by many authors. Especially active investigations relate to the period of activity of the International Indian Ocean Expedition (1960 to 1965), and results of this work are well known from numerous papers cited in bibliographical list edited by Fox (1967), especially those by Matthews (1966), Vine (1966), Cann (1968), Cann & Vine (1966), Laughton (1966), Fisher (1965) and Engel & Fisher (1969). Russian expeditions in the area of the Mid-Indian Ridge (figure 1) paid particular attention to the correlation between different geophysical and geological features of the rift zone. These results are not so well known for language reasons and because there are few publications.