Olistostrome
From Wikipedia, the free encyclopedia
Olistostrome is a sedimentary deposit composed of a chaotic mass of heterogeneous material, such as blocks and mud, that accumulates as a semifluid body by submarine gravity siliding or slumping the unconsolidated sediments. It is a mapable stratigraphic unit, but lacks true bedding but is intercalated amongst normal bedding sequences, as in the Tertiary basin of central Sicily.
Olistostromes are mélanges formed by gravitational sliding under water and accumulation of flow as a semi fluid body with no bedding.
