Definition
Gabbro is an intrusive igneous rock which is chemically equivalent to plutonic Basalt
Breccia is a rock consisting of angular fragments of stones which are cemented by finer calcareous material
History
Origin
Germany
England
Discoverer
Christian Leopold von Buch
Unknown
Etymology
From Latin glaber bare, smooth, bald
From Italian, literally gravel, Germanic origin and related to break
Class
Igneous Rocks
Sedimentary Rocks
Sub-Class
Durable Rock, Hard Rock
Durable Rock, Hard Rock
Family
Group
Plutonic
-
Other Categories
Coarse Grained Rock, Opaque Rock
Coarse Grained Rock, Medium Grained Rock, Opaque Rock