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

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...

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

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

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...

are overlain by a 60 m (200 ft) cap of diabase.: 22  This diabase cap is a sill remnant, and most of the diabase is covered by a considerable thickness...

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...

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

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...

Billingen has been quarried for a long time for concrete manufacturing; diabase is also still quarried there. The mesa, located between the two great lakes...

million years. In the Permian period, magma penetrated cracks, forming a diabase cap over the sediments. During the Caledonian Orogeny at the end of the...

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...

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

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

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

The Beacon Supergroup and diabase intrusions....

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...

The Palisades Sill is a Triassic, 200 Ma diabase intrusion. It extends through portions of New York and New Jersey. It is most noteworthy for The Palisades...

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...

other igneous and metamorphic rocks and are often intruded by younger diabases. Jotnian sediments include quartz-rich sandstones, siltstones, arkose,...

glimmerite-carbonatite series rocks are ore-grade rocks; the fenites and crosscutting diabases are waste rocks. There are, however, some late apatite-poor carbonatite...

stripping and sinking of a 35 m (115 ft) shaft in fractured Nipissing diabase. The primary commodities mined at Temagami-Lorrain were cobalt and gold...

metres (194 ft). The underground hall is decorated with marble, granite and diabase in warm orange tones, and mosaic pictures on the theme of nature. Three...

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

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...

Kattsund in Norway, hence the name. The dykes are made up of tholeiitic diabase and some dykes of intermediate composition. Some dykes are deformed and...

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...

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...

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