Results 201 to 210 of about 146,316 (260)

Volcanic Rocks and Soils

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.
Rotonda, Tatiana   +3 more
openaire   +3 more sources

Hydrogeology of Volcanic Rocks

1999
Volcanic 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
openaire   +1 more source

The Karymskii Volcanic Center: Volcanic rock geochemistry

Journal of Volcanology and Seismology, 2009
This paper is concerned with the petrology and geochemistry of rocks found in the Karymskii Volcanic Center (KVC), which is the largest volcanic center in the Eastern volcanic belt of Kamchatka. The KVC has been built in a rhythmic manner since the Late Pliocene, forming successive differentiated rock complexes.
E. N. Grib   +2 more
openaire   +1 more source

IV.—Titaniferous Volcanic Rocks

Geological Magazine, 1907
In a paper read recently at a meeting of the Geological Society, Dr. Washington proposes to treat certain basalts of the Western Mediterranean basin as constituting “a hitherto unrecognised petro-graphic province, or comagmatic region, one of the most salient characters of which is the presence of salfemanes (basalts) that contain remarkably high ...
openaire   +1 more source

Stylolites In Volcanic Rocks

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 ...
openaire   +1 more source

Volcanic rocks

2018
Sandra M. Barr, Punya Charusiri
openaire   +1 more source

A massive rock and ice avalanche caused the 2021 disaster at Chamoli, Indian Himalaya

Science, 2021
Dan H Shugar   +2 more
exaly  

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