2007-06-26 18:10:14 · 3 answers · asked by kenane w 1 in Science & Mathematics ➔ Earth Sciences & Geology
a {dolerite } is crushed basalt or diabase
Fine- to medium-grained, dark gray to black intrusive igneous rock.
Diabase is one of the dark rocks known commercially as “black granite.” It is extremely hard and tough and is commonly quarried for crushed stone, under the name “trap.” Chemically and mineralogically, diabase closely resembles the volcanic rock basalt, but it is generally somewhat coarser grained
2007-06-26 18:36:31 · answer #1 · answered by Kristenite’s Back! 7 · 1⤊ 1⤋
Crushed Basalt
2016-11-08 08:53:58 · answer #2 · answered by ? 4 · 0⤊ 0⤋
Crushed basalt or diabase is called "Trap Rock". It is used as grade material in railroad beds, temporary road access, and at construction sites. The rock size is about two inches in diameter.
2007-06-27 01:09:08 · answer #3 · answered by ekil422 4 · 0⤊ 0⤋