Results 321 to 330 of about 623,919 (404)

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, V. L. Leonov, A. B. Perepelov   +2 more
openaire   +1 more source

Luminescence, Volcanic Rocks

2013
S. Tsukamoto
openaire   +2 more sources

Gaining acuity on crystal terminology in volcanic rocks

Bulletin of Volcanology, 2021
G. Zellmer
semanticscholar   +1 more source

Neutron and charged particle attenuation properties of volcanic rocks

Radiation Physics and Chemistry, 2021
A. Saeed, S. Alomairy, C. Sriwunkum, M. Al-Buriahi   +3 more
semanticscholar   +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

A Guide to the Chemical Classification of the Common Volcanic Rocks

, 1971
T. Irvine, W. Baragar
semanticscholar   +1 more source

Geochemistry of eocene calc-alkaline volcanic rocks from the Kastamonu area, Northern Turkey

, 1976
A. Peccerillo, S. Taylor
semanticscholar   +1 more source

A Chemical Classification of Volcanic Rocks Based on the Total Alkali-Silica Diagram

, 1986
M. L. Bas, R. Maitre, A. Streckeisen, B. Zanettin   +3 more
semanticscholar   +1 more source

Lithium concentrations and isotope signatures of Palaeozoic basement rocks and Cenozoic volcanic rocks from the Central Andean arc and back-arc

Mineralium Deposita, 2019
A. Meixner, C. Sarchi, F. Lucassen, R. Becchio, P. Caffe, J. Lindsay, M. Rosner, S. Kasemann   +7 more
semanticscholar   +1 more source