Distinctive structural features of magmatic complexes of the central type associated with ring faults

Mesozoic annular magmatic complexes in Aldan shield

“…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.…”

“…In their structure and succession of phases in their formation, many of the ring complexes of the Aldan shield are comparable to Types II, III, IV, V and IX of the structures distinguished by Sveshnikova (1968), despite their having a number of important distinctive characteristics.…”