DIABASE - significado y definición. Qué es DIABASE
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Qué (quién) es DIABASE - definición

ROCK
Dolerite; Dolorite; Dolerites; Diabas; Dolobase; Doleritic; Diabase dyke; Microgabbro
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  • Diabase boulders at [[Devil's Den]] on the [[Gettysburg Battlefield]], Pennsylvania, US
  • dike]] crosscutting horizontal [[limestone]] beds in Arizona
  • Dolerite rocks and [[Quiver tree]]s near [[Keetmanshoop]] (Namibia)
  • [[Fair Head]], Northern Ireland
  • Dolerite forms tall vertical columns throughout [[Tasmania]]. These columns create steep vertical features through its alpine areas.
  • Diabase

Diabase         
·noun A basic, dark-colored, holocrystalline, igneous rock, consisting essentially of a triclinic feldspar and pyroxene with magnetic iron;
- often limited to rocks pretertiary in age. It includes part of what was early called greenstone.
diabase         
['d???be?s]
¦ noun Geology another term for dolerite.
Origin
C19: from Fr., formed irregularly as if from di- 'two' + base 'base', but perh. assoc. later with Gk diabasis 'transition'.
dolerite         
['d?l?r??t]
¦ noun Geology a dark, medium-grained igneous rock typically occurring in dykes and sills.
Origin
C19: from Fr. dolerite, from Gk doleros 'deceptive' (because it resembles diorite).

Wikipedia

Diabase

Diabase (), also called dolerite () or microgabbro, is a mafic, holocrystalline, subvolcanic rock equivalent to volcanic basalt or plutonic gabbro. Diabase dikes and sills are typically shallow intrusive bodies and often exhibit fine-grained to aphanitic chilled margins which may contain tachylite (dark mafic glass).

Diabase is the preferred name in North America, while dolerite is the preferred name in the rest of the English-speaking world, where sometimes the name diabase refers to altered dolerites and basalts. Some geologists prefer to avoid confusion by using the name microgabbro.

The name diabase comes from the French diabasecode: fra promoted to code: fr , and ultimately from the Greek διάβασιςcode: ell promoted to code: el - meaning "act of crossing over, transition".