Igneous rocks with more than 45 % and less than 52 % of Silica. Basic rocks, sometimes referred to as mafic, are generally dark in color with a density greater than 3. Common examples include Basalt and Gabbro.
Synonyms and Related Terms
básica (Port.); mafic
Resources and Citations
- José Delgado Rodrigues, LNEC, Submitted information, 2009.