Results 21 to 30 of about 18,299,024 (255)

Petrogenesis of Havre Volcano in the Kermadec Arc: 2012 Eruption of a Chemically Homogeneous Rhyolite

open access: yesFrontiers in Earth Science, 2022
The 2012 Havre submarine eruption produced a 1.5 km3 bulk rock volume or 0.52 km3 dense rock equivalent volume of rhyolite emplaced as minor lava flows, a field of sunken seafloor pumice, and a volumetrically dominant pumice raft.
J. Knafelc   +5 more
doaj   +1 more source

Magma Chamber Detected Beneath an Arc Volcano With Full‐Waveform Inversion of Active‐Source Seismic Data

open access: yesGeochemistry, Geophysics, Geosystems, 2022
Arc volcanoes are underlain by complex systems of molten‐rock reservoirs ranging from melt‐poor mush zones to melt‐rich magma chambers. Petrological and satellite data indicate that eruptible magma chambers form in the topmost few kilometres of the crust.
K. Chrapkiewicz   +9 more
doaj   +1 more source

On relationship between the superimposed mineralization systems and the zoning patterns of vertical tectonic lithofacies in the Gejiu concentration area of Sn-Cu-W and three rare metals in Yunnan

open access: yesDizhi lixue xuebao, 2021
Based on the zoning pattern and the deformation sieving of tectonic lithofacies, as well as the macroscopic and microscopic studies of tectonic lithofacies, the superimposed mineralization systems and the Gejiu ore-concentrated area in Yunnan has been ...
FANG Weixuan   +4 more
doaj   +1 more source

Magmatic to hydrothermal conditions in the transition from the A-type Pikes Peak granite (Colorado) to its related pegmatite

open access: yesFrontiers in Earth Science, 2022
Fluid exsolution in magmas is a process that, in many silicic upper crustal reservoirs, starts at relatively low crystallinities (near liquidus), and precedes the precipitation of many ore bodies, including pegmatites.
Ludmila Maria Fonseca Teixeira   +3 more
doaj   +1 more source

Magmatic record of India-Asia collision [PDF]

open access: yes, 2015
This work was financially co-supported by Chinese Academy of Sciences (XDB03010301) and other Chinese funding agencies (Project 973: 2011CB403102 and 2015CB452604; NSFC projects: 41225006, 41273044, and 41472061).New geochronological and geochemical data
Chung, Sun-Lin   +8 more
core   +1 more source

Seismicity and magmatic system of the Changbaishan intraplate volcano in East Asia

open access: yes, 2023
The datasets for "Seismicity and magmatic system of the Changbaishan intraplate volcano in East Asia".
Dong Yan (12130800)
core   +1 more source

The Effect of Ocean Loading on the Growth of Basaltic Ocean Island Volcanoes and Their Magmatic Plumbing System

open access: yesFrontiers in Earth Science, 2018
Basaltic shield volcanoes most commonly form as intraplate volcanic ocean islands that arise from the ocean floor and continue to grow above the sea water level to form gigantic volcanic edifices.
Nicolas Le Corvec, Patrick J. McGovern
doaj   +1 more source

Generation of normal and adakite-like calc-alkaline magmas in a non-subductional environment: An Sr-O-H isotopic study of the Apuseni Mountains neogene magmatic province, Romania [PDF]

open access: yes, 2007
Neogene magmatism in the Apuseni Mountains of Romania was active between 15 and 7 Ma, with an isolated final eruption at 1.6 Ma. Several groups of magmatic rocks can be distinguished in the province on the basis of ages, trace elements and isotopic ...
Hilary Downes   +11 more
core   +1 more source

Magmatic contributions to hydrothermal systems [PDF]

open access: yesEos, Transactions American Geophysical Union, 1992
Although there is agreement that many hydrothermal systems in the upper crust derive their thermal energy from magmas, debate continues over the extent to which magmas contribute water, metals, and sulfur to hydrothermal systems. A multidisciplinary seminar was held November 10–16, 1991, in Ebino and Kagoshima, Japan, to establish current understanding
Muffler, L. J. Patrick   +3 more
openaire   +2 more sources

Eleven‐Year Survey of the Magmatic‐Hydrothermal Fluids From Peteroa Volcano: Identifying Precursory Signals of the 2018–2019 Eruption

open access: yesGeochemistry, Geophysics, Geosystems, 2023
Over the past decade, we have conducted geochemical and isotopic monitoring of the fumarolic gases of the Peteroa volcano (Argentina‐Chile). Using the resulting data set, we constructed a conceptual model that describes the evolution of the magmatic ...
Mariano Agusto   +17 more
doaj   +1 more source

Home - About - Disclaimer - Privacy