Results 71 to 80 of about 105,255 (290)
Journal of Metamorphic Geology, Volume 43, Issue 4, Page 341-358, May 2025.ABSTRACT The reactive flow of melt through the mantle or crust triggers chemical disequilibrium, driving reactions that significantly alter the mineral assemblages and physical properties of host rocks. However, the degrees of chemical difference required to initiate these reactions and their timescale remain poorly understood.
Robyn L. Gardner +4 more
wiley +1 more source
Morphostructure Control Towards the Development of Mahawu Volcanic Complex, North Sulawesi
Indonesian Journal on Geoscience, 2014 DOI: 10.17014/ijog.v7i1.134The studied area, situated in northeastern part of North Sulawesi Arm, is dominantly occupied by the Mahawu, Linau, Tompusu, and Kasurutan volcanic rocks.
S. Poedjoprajitno
doaj +1 more source
Evidence for Phosphate Metasomatism in an Olivine‐Rich Achondrites
Meteoritics &Planetary Science, EarlyView.Abstract Brachinites, brachinite‐like achondrites (BLA), and other similar primitive achondrites offer important constraints on differentiation processes of the earliest formed planetesimals, as they quenched amidst early differentiation processes on their parent body. Geochemical data for all major mineral phases in two previously poorly characterized
Robert W. Nicklas +5 more
wiley +1 more source
Annals of Geophysics, 2009 The strong influence of physical conditions during magma formation on Fe equilibria offers a large variety of possibilities to deduce these conditions from Fe-bearing phases and phase assemblages found in magmatic rocks. Conditions of magma genesis and their evolution are of major interest for the understanding of volcanic eruptions. A ...
openaire +4 more sources
Geochemistry, Geophysics, Geosystems, 2023 The Craters of the Moon (COM) Volcanic Field in Idaho is the largest mostly Holocene lava field in the conterminous U.S. and the site of the most recent volcanism in the Yellowstone‐Snake River Plain province.
John Chadwick +2 more
doaj +1 more source
Magma transfer at Campi Flegrei caldera (Italy) before the 1538 AD eruption
Scientific Reports, 2016 Calderas are collapse structures related to the emptying of magmatic reservoirs, often associated with large eruptions from long-lived magmatic systems.
M. D. Di Vito +11 more
semanticscholar +1 more source
Oued Chebeika 002: A new CI1 meteorite linked to outer solar system bodies
Meteoritics &Planetary Science, EarlyView.Abstract CI1 chondrites are rare meteorites with high scientific value. In fact, they are the most chemically primitive meteorites and show evidence of intense parent‐body aqueous alteration. They also share strong similarities with samples from Ryugu and Bennu asteroids returned by the JAXA Hayabusa2 and NASA's OSIRIS‐REx missions.
J. Gattacceca +26 more
wiley +1 more source
Modeling Viscosity of Volcanic Melts With Artificial Neural Networks
Geochemistry, Geophysics, Geosystems, 2022 Viscosity is of great importance in governing the dynamics of volcanoes, including their eruptive style. The viscosity of a volcanic melt is dominated by temperature and chemical composition, both oxides and water content.
D. Langhammer +2 more
doaj +1 more source
Meteoritics &Planetary Science, EarlyView.Abstract High‐Al Apollo 14 basalt 14053 has been identified as an endogenous partial melt product from the lunar interior based on geochemical analyses, specifically low abundances of highly siderophile elements, but exhibits textural characteristics similar to those of impact melts. Prior studies of this sample have described mineralogical differences
Stu Webb +3 more
wiley +1 more source
The First 10 Million Years of Rear‐Arc Magmas Following Backarc Basin Formation Behind the Izu Arc
Geochemistry, Geophysics, Geosystems, 2020 IODP Site U1437 is located in the Izu rear‐arc region, approximately 330 km west of the Izu‐Bonin trench axis. The oldest four units (Units IV through Unit VII) include volcaniclastic sediment and in situ hyaloclastites.
T. Miyazaki +10 more
doaj +1 more source