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Britannica online encyclopedia article on diabase (rock), fine- to medium-grained, dark gray to black intrusive igneous rock. It is extremely hard and tough and is commonly quarried for crushed stone, under the name of trap. ... Certain flat tabular masses (thick sheets or sills) of diabase, such as that forming the...
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www.britannica.com/EBchecked/topic/160909/diabase
www.britannica.com/EBchecked/topic/160909/diabase
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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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www.rocks-rock.com/diabase.html
www.rocks-rock.com/diabase.html
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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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www.myspace.com/diabase
www.myspace.com/diabase
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diabase ( ) n. A dark-gray to black, fine-textured igneous rock composed mainly of feldspar and pyroxene and used for monuments and as crushed stone ... Britannica Concise Encyclopedia: diabase...
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www.answers.com/topic/diabase
www.answers.com/topic/diabase
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Definition of diabase from the Merriam-Webster Online Dictionary with audio pronunciations, thesaurus, Word of the Day, and word games. ... Britannica Online Encyclopedia ... One entry found.
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www.merriam-webster.com/dictionary/diabases
www.merriam-webster.com/dictionary/diabases
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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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homepage.mac.com/kvmagruder/earth/collections/Diabase.h...
homepage.mac.com/kvmagruder/earth/collections/Diabase.htm
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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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stampmin.home.att.net/diabase.htm
stampmin.home.att.net/diabase.htm
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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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gsa.confex.com/gsa/2001AM/finalprogram/abstract_26101.h...
gsa.confex.com/gsa/2001AM/finalprogram/abstract_26101.htm
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