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, 2015 According to tradition, after the first threeWorkshops onVolcanic Rocks were held respectively on Madeira, on the Azores and on Tenerife, also the fourth edition of this event is hosted on a volcanic island, Ischia. The island of Ischia is very famous worldwide for the beauty of its nature (it is known as "the Green Island") and for its thermal springs.
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Hydrogeology of Volcanic Rocks
1999Volcanic rocks are formed by the solidification of magma at or near the ground surface. The most common volcanic rocks are basalts, which are of basic composition. Acidic and intermediate rock types such as rhyolites and andesites have comparatively very limited occurrences.
B. B. S. Singhal, R. P. Gupta
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SEPM Journal of Sedimentary Research, 1962
ABSTRACT Stylolites and microstylolites in a rhyolite from New South Wales are described and compared with those recorded by F. D. Bloss (1954) in a Newfoundland breccia. Factors promoting stylolite formation in lava may include differential devitrification, recrystallization and inversion of the silica minerals within siliceous bands, and deuteric ...
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ABSTRACT Stylolites and microstylolites in a rhyolite from New South Wales are described and compared with those recorded by F. D. Bloss (1954) in a Newfoundland breccia. Factors promoting stylolite formation in lava may include differential devitrification, recrystallization and inversion of the silica minerals within siliceous bands, and deuteric ...
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