Source of the Glencoe Ignimbrites [PDF]
IGNIMBRITES1,2 are a characteristic component of the typically post-orogenic basalt–andesite–rhyolite volcanic association. These pyroclastic deposits are now generally accepted2 as having been produced by eruptions of nuees ardentes in which solid particles, both rock and crystal fragments, glass shards and pumice fragments are suspended by turbulent ...
openaire +1 more source
Gutâi Mts. had started to be built up in Middle Miocene, ca. 15.4 Ma ago. A series of explosive events developed starting with a major magmatic explosion and caldera collapse responsible for large volumes of ignimbrites.
Fülöp, Alexandrina
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DOI:10.17014/ijog.2.2.111-124Batur is one of the finest known calderas on Earth, and is the source of at least two major ignimbrite eruptions with a combined volume of some 84 km3 and 19 km3.
Igan S. Sutawidjaja +2 more
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Alteration processes of the Roque Nublo ignimbrites (Gran Canaria, Canary Islands)
The non-welded, lithic-rich ignimbrites of Roque Nublo are the most characteristic deposits of the second magmatic cycle (Pliocene in age) on Gran Canaria.
Mangas, J. +3 more
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Effect of Salt Mist Ageing on the Physical and Mechanical Properties of Two Ignimbrites from the Canary Islands (Spain). [PDF]
Valido JA +3 more
europepmc +1 more source
Ignimbrites of the Cerro Galan caldera, NW Argentina
The 35 × 20 km Cerro Galán resurgent caldera is the largest post-Miocene caldera so far identified in the Andes. The Cerro Galán complex developed on a late pre-Cambrian to late Palaeozoic basement of gneisses, amphibolites, mica schists and deformed ...
O'Callaghan, L.O. +6 more
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Neogene ignimbrites and volcanic edifices in southern Peru: Stratigraphy and time-volume-composition relationships [PDF]
In the Central Andes of Peru, four volcanic arcs, termed Tacaza, Lower and Upper Barroso, and Frontal arc, have been active over the past 30 Ma (Fig. 1). They form five units between Moquegua and Nazca (14°30– 17°15’°S and 70–74°W).
Wörner, Gerhard +9 more
core
Petrogenesis of Central American Tertiary ignimbrites and associated Caribbean Sea tephra
Ignimbrites, as widespread sheets tens of meters thick, form the Central American Tertiary Ignimbrite Province. Geochemical data were collected from 99 Cenozoic marine ash layers within Caribbean Sea sediments, 76 vitrophyres, and 21 mafic lavas from ...
H. Sigurdsson +13 more
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Age of the magma chamber and its physicochemical state under Elbrus Greater Caucasus, Russia using zircon petrochronology and modeling insights. [PDF]
Bindeman IN +6 more
europepmc +1 more source
Porosity and Pore-Network Controls on Elastic Properties and Permeability in Porous Ignimbrites
In porous ignimbrites, porosity defines the first-order control on elastic trend, but rocks with similar porosity can still behave differently because their pore networks are arranged differently.
Hugo Sereno, Antonio Pola
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