Results 21 to 30 of about 5,185 (202)

SiO2-TiO2 Films Supported on Ignimbrite by Spray Coating for the Photocatalytic Degradation of NOx Gas and Methyl Orange Dye

open access: yesInternational Journal of Photoenergy, 2020
In this work, a SiO2-TiO2 coating, composed of different numbers of TiO2 and SiO2 layers, was fabricated by a spray-coating technique. The films were deposited onto ignimbrite rock and divided into two groups according to the number of SiO2 layers ...
Daily Maria Magdalena Gallegos Florez   +7 more
doaj   +1 more source

Characteristics and properties of Bitlis ignimbrites and their environmental implications

open access: yesMateriales de Construccion, 2020
Bitlis rock is used as a construction material and comes from the lava emitted by volcanoes and their subsequent transformation into ignimbrites. This type of rocks has been characterized physically, chemi­cally, toxicologically and radioactively using ...
E. Işık   +4 more
doaj   +1 more source

The origin of a zoned ignimbrite: Insights into the Campanian Ignimbrite magma chamber (Campi Flegrei, Italy) [PDF]

open access: yesEarth and Planetary Science Letters, 2016
Abstract Caldera-forming eruptions, during which large volumes of magma are explosively evacuated into the atmosphere from shallow crustal reservoirs, are one of the most hazardous natural events on Earth. The Campanian Ignimbrite (CI; Campi Flegrei, Italy) represents a classical example of such events, producing a voluminous pyroclastic sequence of ...
Forni, Francesca   +5 more
openaire   +2 more sources

Volcanic geology of the early Pleistocene ignimbrite succession in the western Papamoa Region, Bay of Plenty [PDF]

open access: yes, 2022
Volcanic activity in the Tauranga Volcanic Center (TgaVC) occurred between 2.95 to 1.9 Ma, some of the eruptions were explosive and led to the distribution of ignimbrites of varying volumes across the western Bay of Plenty Region (Tauranga Basin), North ...
Namaliu, Miriam Darusila Mangon
core  

Geochemical aspects of Kejal kaolin deposit, northwest of Hashtjin, Ardebil province

open access: yesJournal of Economic Geology, 2012
Kajal kaolin deposit is located ~20 km northwest of Hashtjin, Ardebil province. Field evidence and laboratory investigations show that the deposit is an alteration product of ignimbrites, tuffs, and trachy-andesites of Eocene age.
Ali Abedini   +2 more
doaj   +3 more sources

Gabbroic enclave in intermediate ignimbrites: The youngest eruptive event in the northern Luzon Arc-Taiwan region

open access: yesTerrestrial, Atmospheric and Oceanic Sciences, 2021
The white ignimbrite layer on top of volcanic sequences in the Coastal Range is the youngest eruption of the northern Luzon Arc in the Taiwan region. A gabbroic enclave was coexisting with the andesitic ignimbrite in this sequence. This study reports the
Yu-Ming Lai   +5 more
doaj   +1 more source

New constraints on the occurrence of Y-3 Upper Pleistocene tephra marker layer in the Tyrrhenian Sea [PDF]

open access: yes, 2004
: Munno R. & Petrosino P., New constraints on the occurrence of Y-3 Upper Pleistocene tephra layer in the Tyrrhenian Sea. (IT ISSN 0394 – 3356, 2004). A widespread tephra layer, other than the well known Y-5, has been identified in the Upper Pleistocene ...
Petrosino, Paola, Munno, Rosalba
core   +1 more source

Magma Chamber Model of Batur Caldera, Bali, Indonesia: Compositional Variation of Two Facies, Large-Volume Dacitic Ignimbrites

open access: yesIndonesian Journal on Geoscience, 2015
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
doaj   +1 more source

Ignimbrite in Malaya [PDF]

open access: yesGeological Magazine, 1967
With reference to recognition by P. C. Aw of the Temangan dike as an ignimbrite (see this Bibliography Vol. 31, No. 8, 10 E67-07201), it is pointed out that rocks mapped as quartz porphyry in other Malayan localities are probably also ignimbrites. The fissure in which the Temangan dike is located is considered part of a major structural element which ...
openaire   +1 more source

The emplacement and deformation of high-temperature tuffs: a structural analysis of the Grey’s Landing ignimbrite, Snake River Plain, Idaho

open access: yes, 2006
The Grey’s Landing ignimbrite is an exceptionally well-preserved and well-exposed lava-like ignimbrite in the Snake River Plain volcanic province of southern Idaho, USA. High-grade tuffs are typically intensely welded and rheomorphic, preserving evidence
Graham Douglas Michael Andrews (7591613)
core   +5 more sources

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