Potomac breccia
Esquema
Jerarquía
<materials by composition> > inorganic material > rock > sedimentary rock > <sedimentary rock by form> > rudaceous rock > breccia
Descripción
A striking breccia quarried in the Blue Ridge Mountains in Maryland and Virginia; it consists mostly of limestone, quartz pebbles, and multicolored fragments ranging from sand grains to cobbles, all cemented together in a calcareous matrix. It can be extremely difficult to work as the hard pebbles tend to break away from the softer matrix.
URI original del concepto
Otros términos
- brecha del Potomac [es]
- breccia, Potomac [en]
- calico marble [en]
- calico rock [en]
- marble, calico [en]
- marble, Potomac [en]
- Potomac marble [en]
- Potomic breccia [en]
- rock, calico [en]