autobrecciation

autobrecciation

[¦ȯd·ō‚brech·ē′ā·shən]
(geology)
The process whereby portions of the first consolidated crust of a lava flow are incorporated into the still-fluid portion.
References in periodicals archive ?
Contact of the lamproitic body with the pyroclastic beds of the phreatomagmatic-effusive complex is planar to irregular, depending on the autobrecciation of the lava at the boundary.
Two main types of lava may be differentiated: a) massive lava (sometimes clastogenic, produced by autobrecciation) with bedding (Fig.
The intervals dominated by massive lava (sometimes clastogenic, produced by autobrecciation) in the phreatomagmatic-effusive complex are located atop the phreatomagmatic sections and suggest a decrease in the interaction processes between magma and phreatic water, as indicated by Seghedi et al.