References in periodicals archive

Volcanic ash of Guagua Pichincha is a thin material (<2 mm in diameter), and the main products found are dacitic, andesitic, and high-Rb acid [4] including sulfur dioxide, silicon oxide (Si[O.sub.2]), and aluminum oxide ([Al.sub.2][O.sub.3]) [5].

Biological Impact of Exposure to Extremely Fine-Grained Volcanic Ash

Formed during the Pleistocene to Holocene, the volcano consists of andesitic and dacitic lavas.

Mapping Pyroclastic Flow Inundation Using Radar and Optical Satellite Images and Lahar Modeling

1) include mafic flows and tuffs of the Long Reach Formation and conformably overlying, fine-grained, feldspathic sandstone, siltstone, dacitic flows, and minor mafic tuffs of the Jones Creek Formation.

Geological relationships and laser ablation ICP-MS U-Pb geochronology of the Saint George Batholith, southwestern New Brunswick, Canada: implications for its tectonomagmatic evolution

To the east lies the dacitic and adakitic Sahand Volcano and it is possible that the Bezow dome of similar affinity (Modjarrad, 2015 a; 2015b) is part of the volcanic complex (Fig.

Crystal size distribution of amphibole and plagioclase from Zanbil adakitic dacites, Urmia-Iran: evidence for magma mixing and textural coarsening

These sapphires are believed to have a metamorphic origin followed by transport to the surface in rhyolitic to dacitic volcanic eruptions.

GSA 2015

The collected rock samples lie in Volcanic Formation" which consists of dolerites, andesite, dacites, dacitic tuff, rhyolites and rhyolitic tuff.

PREDICTION OF UNIAXIAL COMPRESSIVE STRENGTH OF KIRANA HILLS DOLERITE BY ULTRASONIC PULSE WAVE VELOCITY

The geometry of this structure is masked and obliterated by many dacitic and andesitic subvolcanic bodies and pyroclastic flows (Leveratto, 1968), their ages ranging from 18 to 7 Ma (Leveratto, 1976; Bercowski et al., 1986, 1993; Verges et al., 2001).

Stratigraphy and structure of the Punta Negra Anticline. Implications on the structural evolution of the Argentine Precordillera

The explosive products consist in pyroclastic deposits (Brecha Pirociastica Cantimplora; thickness = 1-4 m), conformed by dacitic blocks (20-30 cm), pumice clasts (<15 cm), and ash, that occurred intercalated with the lava flows.

Multivariate analysis, mass balance techniques, and statistical tests as tools in igneous petrology: application to the Sierra de las Cruces Volcanic Range (Mexican Volcanic Belt)