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Diabase - Wikipedia, the free encyclopedia
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Igneous Rocks - Diabase (Dolerite) ... Mineralogy: Phenocrysts comprise olivine (olivine diabase) and/or pyroxene or plagioclase. The groundmass comprises the same minerals with iron oxide, and sometimes with some quartz, hornblende or biotite. Field relations: Dykes and sills.
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MySpace Music profile for Diabase. Download Diabase Metal / Jam Band / Southern Rock music singles, watch music videos, listen to free streaming mp3s, & read Diabase's blog. ... Diabase; Metal / Jam Band / Southern Rock...
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Hutchinson encyclopedia article about diabase. diabase. Information about diabase in the Hutchinson encyclopedia. ... Mapping in this area also outlined a swarm of diabase dykes and associated diatreme breccias, which were emplaced in the main E-W rift associated with the Richmond Gulf zone (Simard et al.
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DIABASE , in See also: ... definition of the group can no longer be justified, the name is so well established in current usage that it can hardly be discarded . The terms diabase and dolerite are employed really to designate distinct facies of the same set of rocks . The minerals of diabase are the same as those of...
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Media in category "Diabase" ... The following 12 files are in this category, out of 12 total. ... Dike diabase AZ.jpg; 82,027 bytes;
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| Mineral List | Rock List | Guidelines for Rock Collections | ... Rock class: Hypabyssal Igneous Rock ... Composition: Plagioclase (labradorite-bytownite and clinopyroxene), with others.
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In the United States, diabase is also referred to as dolerite. In the United Kingdom, dolerite is used to describe the fresh rock; diabase is used to refer to altered dolerite. Commonly occurs as tabular masses that have been intruded into surrounding rocks.
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Diabase is commonly thought to have a simple ophitic texture, but careful study of the Palisades Sill, New Jersey, indicates that this diabase has a complicated texture that reflects the processes responsible for the differentiation of the sill.
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