Study of morphology of clay minerals formed in altered submarine basalt flow lava has shown that clay-forming process was a continuous-discontinuous one. Basaltic glass was the most readily replaced and laminar-packet aggregates of smectite were produced. Acicular-globular smectites were also formed from solutions in cavities within basalts.

Supplement to: Kharin, Gennady S; Shevchenko, Alla Ya; Zangalis, K P (1979): Morphology of the smectites in the basalts on the Norwegian Sea floor. Oceanology, 19(3), 284-287