Results 21 to 30 of about 542,668 (236)

Estimation of the Thermal Structure Beneath the Volcanic Arc of the Northern Andes by Coda Wave Attenuation Tomography

open access: yesFrontiers in Earth Science, 2019
In the Northern Andes, the magmatic arc rises from a broad area of active volcanism in the South, at the border between Ecuador and Colombia, to a linear north-directed trend of active and inactive volcanic cones.
Carlos A. Vargas   +2 more
doaj   +1 more source

New Insights into the Emplacement Dynamics of Volcanic Island Landslides [PDF]

open access: yes, 2014
Volcanic islands form the highest topographic structures on Earth and are the sites of some of the planet's largest landslides. These landslides can rapidly mobilize hundreds of cubic kilometers of rock and sediment, and potentially generate destructive ...
Watt, Sebastian F.L.   +9 more
core   +2 more sources

Observation of sulphate aerosols and SO2 from volcanic eruptions using data from the Atmospheric Chemistry Experiment (ACE) [PDF]

open access: yes, 2011
Infrared spectra measured by the Atmospheric Chemistry Experiment Fourier Transform Spectrometer (ACE-FTS) on board of the SCISAT satellite were used to analyse the temporal and spatial evolution of volcanic aerosols from the Kasatochi (August 2008 ...
Doeringer, Debora
core   +6 more sources

Provenance of upper Permian-lowermost Triassic sandstones, Wutonggou low-order cycle, Bogda Mountains, NW China: implications on the unroofing history of the Eastern North Tianshan Suture

open access: yesJournal of Palaeogeography, 2020
This study investigates the provenance of sedimentary rocks in Bogda Mountains, NW China, and reconstructs the lithology and unroofing history of the Eastern North Tianshan Suture.
Dong-Yu Zheng, Wan Yang
doaj   +1 more source

Palaeoproterozoic mafic and intermediate metavolcanic rocks in the Turku area, SW Finland [PDF]

open access: yesBulletin of the Geological Society of Finland, 2007
Twenty two samples were analysed from mafic and intermediate volcanic rocks from the Turku area along ~60 km long north-south geotraverse. Geographically and lithologically the samples were divided into the Pargas, Turku and Vahto groups.
M. Väisänen, G. Westerlund
doaj   +1 more source

Upper crustal structure of an active volcano from refraction/reflection tomography, Montserrat, Lesser Antilles [PDF]

open access: yes, 2010
To better understand the volcanic phenomena acting on Montserrat, the SEA-CALIPSO seis-mic experiment (Seismic Experiment with Airgun-source – Caribbean Andesitic Lava Island Precision Seismo-geodetic Observatory) was conducted in 2007 December with the ...
Henstock, T   +35 more
core   +1 more source

Subduction with arrested volcanism: Compressional regime in volcanic arc gap formation along east Mindanao, Philippines

open access: yesJournal of Asian Earth Sciences: X, 2020
The eastern portion of the Philippine island arc system, from the Bicol Peninsula through Leyte island to the Pacific Cordillera of east Mindanao, is the overriding plate underneath which the West Philippine Basin (part of the Philippine Sea Plate) and ...
Graciano P. Yumul, Jr.   +4 more
doaj   +1 more source

GEOLOGY AND PETROCHEMISTRY OF GABAL ABU-MESAID AREA, NORTH EASTERN DESERT, EGYPT [PDF]

open access: yesDelta Journal of Science, 2007
A suite of volcanic and plutonic rocks represent the products of Pan-African orogeny; constitute the major litho-tectonic association of Gabal Abu-Mesaid area located in the northern part of the Eastern Desert.
H.I. FARAG   +3 more
doaj   +1 more source

Machine Learning in Discriminating Active Volcanoes of the Hellenic Volcanic Arc

open access: yesApplied Sciences, 2021
Identifying the provenance of volcanic rocks can be essential for improving geological maps in the field of geology and providing a tool for the geochemical fingerprinting of ancient artifacts like millstones and anchors in the field of geoarchaeology ...
Athanasios G. Ouzounis   +1 more
doaj   +1 more source

Climatic control on the location of continental volcanic arcs

open access: yesScientific Reports, 2022
Orogens and volcanic arcs at continental plate margins are primary surface expressions of convergent plate tectonics. Although it is established that climate affects the shape, size, and architecture of orogens via orographic erosion gradients, the ascent of magma through the crust and location of volcanoes along magmatic arcs have been considered ...
Veleda Astarte Paiva Muller   +4 more
openaire   +5 more sources

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