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| Results 1 - 10 of about 147 for the
Petrology
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| Exact Match: Petrology |
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Petrology is a field of geology which focuses on the study of rocks and the conditions by which they form. There are three branches of petrology, corresponding to the three types of rocks: igneous , metamorphic , and sedimentary . The word petrology itself comes from the Greek word "petros", meaning rock. Igneous petrology focuses on the genesis of rocks that crystallized...
http://www.all-about-all.info/article/Petrology
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...most accomplished chemists of his time. Believing the black rock of the Schlossberg at Stolpen to be the same as Pliny the Elder 's basalt , he applied this name to it, and thus originated a petrological term which has been permanently incorporated in the vocabulary of science. In spite of the early proof that Agricola had given of the tolerance of his own religious attitude, he was not...
http://www.all-about-all.info/article/Georg Agricola
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The matrix or groundmass of an igneous rock consists of fine grained often microscopic crystals in which larger crystals ( phenocrysts ) are embedded. This porphyritic texture is indicative of... In sedimentary rocks , matrix refers to a fine grained clay or silt in which larger fragments are embedded. This geology article is a stub . You can help Wikipedia by expanding it .
http://www.all-about-all.info/article/Matrix (geology)
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In geology , mafic minerals and rocks are silicate minerals , magmas , and volcanic and intrusive igneous rocks that have relatively high concentrations of the heavier elements . The term... Vesicular basalt Amygdaloidal Amygdaloidal basalt Many small vesicles Scoria Glassy Tachylyte , sideromelane, palagonite See also List of rocks
http://www.all-about-all.info/article/Mafic
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...analysis of contemporary burials found nearby known as the Boscombe Bowmen , has indicated that at least some of the individuals associated with Stonehenge 3 did indeed come from modern day Wales. Petrological analysis of the stones themselves has verified that they could only have come from the Preseli Hills and it is tempting to connect the two. The main source of the bluestones is now identified...
http://www.all-about-all.info/article/Stonehenge
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This article is about the type of molten rock. For other meanings of magma, see Magma (disambiguation) . Magma is molten rock often located inside a magma chamber beneath the surface of the...in continental crust (Yellowstone National Park); this type of magma occurs mainly where continental crust, which contains large amounts of silica, is being melted, causing the explosive behavior.
http://www.all-about-all.info/article/Magma
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Aegirine phonolite. Dark prismatic minerals are aegirine phenocrysts . Phonolite , sometimes known as Clinkstone is an igneous , volcanic ( extrusive ) rock , of felsic composition... {{{2|Phonolite}}} This article about a specific mineral , mineraloid , or type of rock is a stub . You can help Wikipedia by expanding it .
http://www.all-about-all.info/article/Phonolite
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...phlogopite. References ^ {{{Author|}}}{{|{{{3}}}}}}|show1| (1985)}}{{{{{Year|}}}}}}|show1|.}} {{|{{{3}}}}}}|show1|[{{{URL}}}}} Petrology of igneous and metamorphic rocks, 2nd ed.{{|{{{3}}}}}}|show1|]}} {{|{{{3}}}}}}|show1|, {{{Pages}}}}}{{|{{{3}}}}}}|Show1|, McGraw-Hill, Inc.}}. {{{ID|}}} ^ {{{Author|}}}{{|{{{3...
http://www.all-about-all.info/article/Basalt
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A cryptocrystal is a rock whose texture is so finely crystalline—that is, made up of such minute crystals —that its crystalline nature is only vaguely revealed even in a thin section...from pure obsidian (acidic) or tachylite (basic), which are natural rock glasses . This geology article is a stub . You can help Wikipedia by expanding it .
http://www.all-about-all.info/article/Cryptocrystal
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Two types of sedimentary rock: limey shale overlaid by limestone . Cumberland Plateau , Tennessee . Sedimentary rock is one of the three main rock groups (along with igneous and metamorphic... C. Krumbein. See also Wikimedia Commons has more media related to: {{{2|Sedimentary rock}}} Sediment List of minerals List of rocks ř cx.m,nvklfdg;l
http://www.all-about-all.info/article/Sedimentary rock
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Also helps finding: etrology, ptrology, perology, petology, petrlogy, petroogy, petrolgy, petroloy, petrolog, oetrology, letrology, pwtrology, prtrology, pstrology, pdtrology
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