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In diabase, poorly formed pyroxene crystals wrap around or mold against long, rectangular plagioclase crystals to give it the characteristic texture known as diabasic or ophitic. The larger pyroxene grains may completely enclose plagioclase;
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www.britannica.com/EBchecked/topic/160909/diabase
www.britannica.com/EBchecked/topic/160909/diabase
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of potassium-rich granophyre and associated quartz diabase formed by inter- action of the diabase magma with surrounding sedimentary rocks. ...
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www.springerlink.com/index/J163L275324V3705.pdf
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What are the uses of diabase rock? ... How is diabase formed? ... (petrology) Amphibolite formed by dynamic metamorphism of diabase.
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www.answers.com/topic/diabase-amphibolite
www.answers.com/topic/diabase-amphibolite
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Britannica Concise Encyclopedia: diabase ... Parts of the Deccan Traps of India, formed at the end of the Cretaceous also includes dolerite[8]. It is also abundant in large parts of Curaçao, an island off the coast of Venezuela. ... How is diabase formed?
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www.answers.com/topic/diabase
www.answers.com/topic/diabase
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The bedrock of the island is a diabase sill formed during the volcanic eruptions that created much of the bedrock of northern New Jersey, including the New Jersey Palisades, approximately 200 million years ago. As an island, Staten Island was formed ... Staten Island - Staaten Eylandt ... Staten Island - Richmond County...
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www.experiencefestival.com/a/Staten_Island_-_History/id...
www.experiencefestival.com/a/Staten_Island_-_History/id/2098976
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After making music for their own enjoyment in different constellations for almost a decade, they formed diabase collective 2005. And finally, things started sounding just the way they wanted them to. The result is an esoteric mix of styles and influences, with strong melodies and song nerve.
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www.myspace.com/diabasecollective
www.myspace.com/diabasecollective
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www-odp.tamu.edu/publications/210_IR/chap_01/c1_f25.htm
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The most common rock present in the park is the igneous rock diabase, formed below the earth's surface and originally hot and liquid (molten). Diabase underlies nearly all of Gifford Pinchot State Park except along the northern and southern boundaries.
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vulcan.wr.usgs.gov/LivingWith/VolcanicPast/Places/volca...
vulcan.wr.usgs.gov/LivingWith/VolcanicPast/Places/volcanic_past_pennsylvania.html
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These were covered first by basaltic rocks (pillow lavas and diabase) formed at a distant ocean ridge, then by deep marine sediments (chert and shale), and finally by continental sediments (sandstone) as the sea floor was moved by plate tectonics closer and closer to North America.
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polyland.calpoly.edu/OVERVIEW/Archives/derome/geology.h...
polyland.calpoly.edu/OVERVIEW/Archives/derome/geology.html
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