Definition of Dacites. Meaning of Dacites. Synonyms of Dacites

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Definition of Dacites

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Meaning of Dacites from wikipedia

- biotite and hornblende. Other dacites, especially pyroxene-bearing dacites, are darker colored. In thin section, dacites may have an aphanitic to porphyritic...
- although the majority are of intermediate composition (such as Santiaguito, dacite-andesite, present day) The characteristic dome shape is attributed to high...
- percentage (>63%) of silica, the lava is described as felsic. Felsic lavas (dacites or rhyolites) are highly viscous and are erupted as domes or short, stubby...
- magmas have a silica content greater than 63%. They include rhyolite and dacite magmas. With such a high silica content, these magmas are extremely viscous...
- called the Pagosa Peak Dacite, made of dacite that is very similar to that of the Fish Canyon Tuff. The Pagosa Peak Dacite, which has characteristics...
- 'slate' or 'bluestone', a metamorphic phyllite rock, with both andesite and dacite mineral composition. Dacitic phyllite is a predominant type of rock found...
- characteristic mixture of dacite and andesite, while modern lava is very diverse (ranging from olivine basalt to andesite and dacite).: 214  St. Helens started...
- erupt from the vent were hornblende-pyroxene andesites with a hornblende dacite dome at its summit. Glacial erosion has since modified its shape.[citation...
- Paleozoic and Mesozoic rocks. The city's Mount Elden is a lava dome made of dacite, Sunset Crater is the youngest feature of the San Francisco volcanic field...
- working in the area were not there. By the time of the climactic eruption, dacite magma intruding into the volcano had forced the north flank outward nearly...