1
This is black volcanic rock, basalt, granite, diabase, one of those.
2
It's addictive, and any Quaker State local will talk your ear off about diabase.
3
Dynamic alteration of the Catoctin diabase is pronounced and wide-spread.
4
None the less, its origin as diabase can definitely be asserted of the whole mass.
5
In building stones there were shown granite, diabase, morite, sandstone, bluestone, limestone, marble, slate, and marl.
6
Depression and Newark deposition; diabase intrusion.
7
While the diabase dikes are most prominent in the Newark rocks, they are also found occasionally in the other terraces.
8
The sandstone and trap are of the Triassic Period, and the trap of this vicinity is more particularly classified as diabase.
9
Chemical analysis, accordingly, will often enable us to identify an igneous rock (diabase, &c.) under the guise of an amphibolite.
10
At Leesburg the limestone conglomerate next the diabase is indurated, its iron oxide is driven off, and the limestone partly crystallized into marble.
11
Between the horseshoe and the outer circle another circle of diabase stones is sometimes said to have existed, but very little of it now remains.
12
This is black volcanic rock, basalt, granite, diabase, one of those.
13
It's addictive, and any Quaker State local will talk your ear off about diabase.
14
Dynamic alteration of the Catoctin diabase is pronounced and wide-spread.
15
None the less, its origin as diabase can definitely be asserted of the whole mass.
16
In building stones there were shown granite, diabase, morite, sandstone, bluestone, limestone, marble, slate, and marl.