“…The Yakokut, Tommot and certain other ring complexes are close to Types IV and V in the succession of phases of their formation and in the position of their intra-annular block. The Inagli, Konder and Chad plutons, as Sveshnikova (1968) has noted, belong to Type IX. The principal difference between our interpretation of the formation of these structures and Sveshnikova's is that their dunite cores were not protruded by subsequent intrusions, but were themselves injected.…”