Look up diabase in Wiktionary, the free dictionary. Diabase (/ˈdaɪ.əˌbeɪs/), also called dolerite (/ˈdɒl.əˌraɪt/) or microgabbro, is a mafic, holocrystalline...

The York Haven Diabase is a rock formation in Pennsylvania, United States. It underlies the Rossville Diabase and is Jurassic in age. The formation is...

the diabasic portion and are composed of a distinct type of rock called Diabase-Schist-Tuff, as noted in earlier geological research. However, more recent...

University. Wherry theorized that the ringing was due to the texture of the diabase rocks and that they were supported by other rocks. He identified the boulder...

The Diabase Hills are a mountain range in Washoe County, Nevada. "Diabase Hills". Geographic Names Information System. United States Geological Survey...

extrusive igneous rock. Types of trap rock include basalt, peridotite, diabase, and gabbro. Trap is also used to refer to flood (plateau) basalts, such...

diabase and subordinate layered diabase. Shoreline exposures of quartz, amphibole diabase, poikilitic diabase, and diabase with pegmatitic patches or veins...

of this igneous rock. There is very little coarser-grained gabbro and diabase. Nephelinite is exposed on the islands but is extremely rare. The majority...

683°W / 47.400; -79.683 The Nipissing sills, also called the Nipissing diabase, is a large 2217– to 2210–million year old group of sills in the Superior...

as black granite. In geological terms, black granite might be gabbro, diabase, basalt, diorite, norite, or anorthosite. Morales Demarco, Manuela; Oyhantçabal...