WikiPedia definition of "dacite"
Dacite (pronounced /ˈdeɪsaɪt/) is an igneous, volcanic rock. It is intermediate in compositions between andesite and rhyolite. The relative proportions of feldspars and quartz in ...
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Dacite: 1986: Puy-de-Dôme: France: Chaîne des Puys: ca. 5760 BC: Santiaguito: Guatemala: Central America Volcanic Arc: Dacite: 2009: Sollipulli: Chile: Southern Volcanic Zone
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Likewise, because of the high viscosity of the dacite, it is likely that the mountain formed in the short period of a few month's time. [3] The mountain’s overlapping flows ...
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The volcanic equivalent of granodiorite is dacite. History. The Rosetta Stone was carved out of granodiorite, and Plymouth Rock was a glacial erratic boulder of granodiorite.
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The Tooth of Time is an igneous intrusion of dacite porphyry formed in the Tertiary period of the Cenozoic era some 22-40 million years ago. The Tooth is located five miles (8 km ...
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In a general sense, it is the intermediate type between basalt and dacite. The mineral assemblage is typically dominated by plagioclase plus pyroxene and/or hornblende.
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Intermediate volcanic rocks include andesite, dacite, trachyte, and latite. Pyroclastic rocks are the product of explosive volcanism. They are often felsic (high in silica).
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Dacite is a silicic volcanic rock common in explosive eruptions, lava domes and short thick lava flows. There are also large intracaldera lavas composed of andesite, a volcanic ...
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Medicine Lake Volcano has erupted about 8 times in the past 4,000 years and was last active about 1,000 years ago when rhyolite and dacite erupted at Glass Mountain and associated ...
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The magma forming this lava is often felsic, having high-to-intermediate levels of silica (as in rhyolite, dacite, or andesite), with lesser amounts of less-viscous mafic magma.
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