Results 11 to 20 of about 4,536 (194)

The Phlegrean Fields volcanological evolution

open access: yesJournal of Maps, 2021
A volcanological map merging continental and marine areas of the Phlegrean Fields and Procida Island (Southern Italy) is presented at the 1:25,000 scale.
Alessandro Sbrana   +2 more
doaj   +1 more source

Pre-Eruptive Magma Configurations and Petrogenetic Relationships of the Rattlesnake Tuff, Oregon–Insights From Spectacularly Banded High-Silica Rhyolite Pumices

open access: yesFrontiers in Earth Science, 2022
The 7.1 Ma Rattlesnake Tuff (RST) of eastern Oregon is a widespread and voluminous (>300 km3) ignimbrite composed of 99% crystal poor (≤1%) high-silica rhyolite (HSR) and <1% dacites.
Vanessa M. Swenton, Martin J. Streck
doaj   +1 more source

Evidence of Seismic-Related Liquefaction Processes within the Volcanic Record of the Campi Flegrei Caldera (Italy)

open access: yesGeosciences, 2022
We report the occurrence of several sand liquefaction structures, such as sand dikes, in the stratigraphic record of the Campi Flegrei volcano, located both inside and outside the caldera. Five sites were analyzed within the caldera and two outside.
Stefano Vitale   +4 more
doaj   +1 more source

Geology of La Reforma caldera complex, Baja California, Mexico

open access: yesJournal of Maps, 2019
A new geological map at 1:50,000 scale of La Reforma Caldera Complex has been produced applying modern survey methodologies to volcanic areas. This map aims to represent a reliable and objective tool to understand the geological evolution of the region ...
L. García Sánchez   +20 more
doaj   +1 more source

Ductility and Compressibility Accommodate High Magma Flux Beneath a Silicic Continental Rift Caldera: Insights From Corbetti Caldera (Ethiopia)

open access: yesGeochemistry, Geophysics, Geosystems, 2020
Large silicic magma reservoirs preferentially form in the upper crust of extensional continental environments. However, our quantitative understanding of the link between mantle magmatism, silicic reservoirs, and surface deformation during rifting is ...
J. Gottsmann   +4 more
doaj   +1 more source

Evolution of Rajabasa Volcano in Kalianda Area and Its Vicinity, South Lampung Regency

open access: yesIndonesian Journal on Geoscience, 2014
DOI: 10.17014/ijog.v7i1.132Rajabasa Volcano (± 1281 m) and Lampung Tuff, located in the South Lampung Regency, is the main point in order to understand the evolution of Quaternary volcanism in the area.
Sutikno Bronto   +3 more
doaj   +1 more source

Insights Into the Eruptive Dynamics of Small Caldera-Forming Eruptions: The Case Study of the Welded Scoriae of Vulcano (Aeolian Islands, Italy)

open access: yesFrontiers in Earth Science, 2020
A multi-disciplinary study, integrating volcanological field observations, petrography, whole rock geochemistry and textural and compositional analyses on plagioclase crystals has been carried out on the products of Monte Luccia, Spiaggia Lunga, and ...
Eugenio Nicotra   +3 more
doaj   +1 more source

Nonstatistical dynamics on the caldera [PDF]

open access: yesThe Journal of Chemical Physics, 2014
We explore both classical and quantum dynamics of a model potential exhibiting a caldera: that is, a shallow potential well with two pairs of symmetry related index one saddles associated with entrance/exit channels. Classical trajectory simulations at several different energies confirm the existence of the “dynamical matching” phenomenon originally ...
Collins, Peter   +4 more
openaire   +4 more sources

Caldera

open access: yes, 2011
[ES] Definición del término Caldera en el diccionario Dicter. [EN] Definition of the word Caldera in the dictionary Dicter.
  +6 more sources

Seismic reflections reveal a massive melt layer feeding Campi Flegrei caldera

open access: yesGeophysical Research Letters, 2008
Campi Flegrei is an active, resurgent caldera that is located a few kilometres west of the city of Naples, a densely populated urban settlement in southern Italy. Identifying, locating at depth and better defining the geometry of the magma feeding system
Aldo Zollo   +5 more
doaj   +1 more source

Home - About - Disclaimer - Privacy