1) Granular igneous rocks
Found on
https://www.crosswordclues.com/clue/gabbros
Gabbros are basic rocks solidified under great pressure at considerable depths in the earth's crust. They are coarse-grained and consist of plagioclase feldspar with augite. Sometimes the term is used to include similar rocks composed of the same feldspar with other minerals, and according to the minerals contained they are known as norites, trocto...
Found on
http://www.probertencyclopaedia.com/browse/HG.HTM
No exact match found.
