Definition of morb
An abbreviation for Mid Ocean Ridge Basalt. Said of basalts that form by 15 to 30 percent partial melting of the upper mantle at depths of 50 to 80 kilometers below the mid ocean spreading ridges.
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New Locality Added: Puerto Lápice meteorite, Castile-La Mancha, SpainFrom Lon Clay Hill, 29th Jul 2014 01:26:08