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

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

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...

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...

pyroxene, amphibole, and biotite. Common mafic rocks include basalt, diabase and gabbro. Mafic rocks often also contain calcium-rich varieties of plagioclase...

Subvolcanic rocks include diabase (also known as dolerite) and porphyry. Common examples of subvolcanic rocks are diabase, quartz dolerite, microgranite...

rock, known as basalt, if extrusive, or diabase, if intrusive. East Rock, being intrusive, is diabase. Diabase is a dark colored rock, but the iron within...

and diabase. They are sometimes only a fraction of an inch in thickness, resembling a thin layer of pitch or tar on the edge of a crystalline diabase dike...

Formation – which is covered by the hard, protective 60 m (200 ft) thick diabase cap.: iii, 2  The Rove Formation is part of the Animikie Group.: 32  The...

Volcanic rock intermediate in composition between andesite and rhyolite Diabase, also known as dolerite – Type of igneous rock Diorite – Igneous rock type...

some sections by one-quarter and the area of its base by four fifths. The diabase rock was used as building material in growing areas like Jersey City. The...

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

of a valley temple, now buried beneath the village of Nazlet el-Samman; diabase paving and nummulitic limestone walls have been found but the site has...

resort Ski Roundtop is there. The mountain is underlain by the York Haven Diabase. Mountainzone.com Mangan, M. T.; Marsh, B. D.; Froelich, A. J.; Gottfried...

famous, very fine-grained black diabase is mined in Östra Göinge. Because of the extremely high quality of the diabase from this area, it is in high demand...

Mountain can be seen on a clear day. Devil Mountain is underlain by Nipissing diabase, which forms a 2.2 billion year old magmatic province with an east–west...

designated a National Natural Landmark, being "the best example of a thick diabase sill in the United States". It underlies a portion of northwest Staten...

called the Black Stone Violin, is a full-size playable violin made of black diabase after drawings by Antonio Stradivari (Stradivarius), but with technical...

formed where French Creek cuts across a series of diabase (trap rock) dikes. Erosion of the diabase dikes by the creek has caused huge boulders to fall...

Magma was injected between layers of sedimentary rock, forming diabase sills. This hard diabase protects the layers of sedimentary rock below, forming the...

Hinckley Sandstone, Hovland Diabase Complex, North Shore Volcanic Group, Puckwunge Formation, Reservation River Diabase Complex, Solor Church Formation...

body, dark red denotes a pyrite-chalcopyrite ore body, green is a gabbro diabase, lamprophyre and quartz porphyry dike, and light tan is the Supraore sequence...

large body of diabase in central Montgomery County, Maryland, is known as the Boyds Sill, named after the town of Boyds. Jurassic diabase boulders in the...

The Sleeping Giant is a series of mesas formed by the erosion of thick, diabase sills on Sibley Peninsula which resembles a giant lying on its back when...

Contact between a dark-colored diabase dike (about 1100 million years old) and light-colored migmatitic paragneiss in the Kosterhavet National Park in...