Results 111 to 120 of about 6,691 (288)

Magmatic evolution and architecture of an oceanic intraplate volcano: Vesteris Seamount, Atlantic Ocean

Frontiers in Earth Science
Vesteris is a large (33 × 27 km) and young (summit age: 0.65–0.010 Ma) intraplate seamount in the Greenland Sea, formed from ocean island basalt (OIB) magmatism.
L. Beloša, D. T. Murphy, T. Ubide, S. Callegaro, C. M. Meyzen, M. Bizimis, A. Mazzini, A. Mazzini   +7 more
doaj   +1 more source

Review of South African research on volcanic and related rocks and mantle-derived materials : 1999-2002 [PDF]

, 2003
This report reviews South African research relating to the scientific interests of the International Association of Volcanology and Chemistry of the Earth's Interior (IAVCEI) and which was published between 1999 and 2002.
Marsh, J S
core   +1 more source

Seismological structure of the 1.8 Ga Trans-Hudson Orogen of North America [PDF]

, 2016
Precambrian tectonic processes are debated: what was the nature and scale of orogenic events on the younger, hotter, and more ductile Earth? Northern Hudson Bay records the Paleoproterozoic collision between the Western Churchill and Superior plates—the ∼
Abbott, Acton, Agius, Ammon, Amy Gilligan, Baird, Bao, Bastow, Bastow, Berman, Berman, Breemen, Bédard, Caldwell, Christensen, Corrigan, Corrigan, Darbyshire, Darbyshire, Darbyshire, Eaton, Eaton, Ekström, Fiona A. Darbyshire, Flament, Garth, Gibb, Gilligan, Hartlaub, Hartlaub, Herrmann, Hoffman, Ian D. Bastow, Jones, Kennett, Kgaswane, Kind, Leech, Ligorría, Nelson, Nunn, Nábělek, Pawlak, Pawlak, Porritt, Rai, Rapine, Rey, Schneider, Schulte-Pelkum, Snyder, Snyder, St-Onge, St-Onge, St-Onge, Thompson, Thompson, Tugume, Wessel, Zegers, Zhang, Zhu, Özalaybey   +62 more
core   +1 more source

Petrological Evidence for Magma Mobilization Years Before the 2020/2021 Eruption of La Soufrière Volcano, St. Vincent

Geochemistry, Geophysics, Geosystems, Volume 26, Issue 4, April 2025.
Abstract Anticipating the onset of the 2020/2021 effusive‐explosive eruptive sequence at La Soufrière volcano, St. Vincent was challenging despite the established monitoring networks in operation. Here, we integrate petrological data to decipher retrospectively signs of imminent eruption from available pre‐eruptive monitoring data.
Michal Camejo‐Harry, Jon Blundy, Euan J. F. Mutch, Thomas Hudson, John‐Michael Kendall, Thomas Christopher, Rodrigo Contreras‐Arratia, Joan L. Latchman, Leanka Henry   +8 more
wiley   +1 more source

Evidence for Lithospheric Mantle Uniformity Beneath Cratons

Journal of Geophysical Research: Solid Earth, Volume 130, Issue 4, April 2025.
Abstract Cratons are characterized by thick mantle roots that have experienced high degrees of partial melting, resulting in a cold, strong, and buoyant mantle compared to its oceanic counterpart. The extent of chemical variability within cratonic roots, the role of cratons in insulating the mantle over time and subsequent triggering of continental ...
Federico D. Munch, Paolo A. Sossi, Amir Khan   +2 more
wiley   +1 more source

Thermal structure and exhumation history of the Lesser Himalaya in central Nepal [PDF]

, 2004
The Lesser Himalaya (LH) consists of metasedimentary rocks that have been scrapped off from the underthrusting Indian crust and accreted to the mountain range over the last ~20 Myr. It now forms a significant fraction of the Himalayan collisional orogen.
Avouac, J. P., Beyssac, O., Bollinger, L., Catlos, E. J., Goffé, B., Grove, M., Harrison, T. M., Sapkota, S.   +7 more
core   +1 more source

Abundance and Partitioning of OH in a High-pressure Magmatic System: Megacrysts from the Monastery Kimberlite, South Africa [PDF]

, 2004
Concentrations of OH, and major and trace elements were determined in a suite of mantle-derived megacrysts that represent the crystallization products of a kimberlite-like magma at ~5 GPa and ~1400–1100°C.
Bell, David R., Moore, Rory O., Rossman, George R.   +2 more
core   +1 more source

Petrology and Geochemistry of Ophiolitic Pyroxenite in the Eastern Desert of Egypt: Genesis of Ultramafic Cumulates and Implications for Neoproterozoic Supra‐Subduction Seafloor Metamorphism

Geochemistry, Geophysics, Geosystems, Volume 26, Issue 3, March 2025.
Abstract We describe and compare two outcrops of pyroxenite associated with Neoproterozoic ophiolite sequences in the Eastern Desert of Egypt: small masses in the Abu Samuki area of the North Eastern Desert and large belts in the Wadi El‐Mireiwa area of the South Eastern Desert.
Hussam A. Selim, Paul D. Asimow, Ayman E. Maurice, Mohamad A. Ismail, Oliver D. Wilner, Nathan F. Dalleska, Moustafa E. Gharib, Safinaz A. A. Mahmoud   +7 more
wiley   +1 more source

Pressure-Temperature Conditions of Granulite Formation in Rogaland, SW Norway [PDF]

, 1994
The geology of SW Norway is dominated by high-grade amphibolite to granulite facies gneisses with associated migmatites and anorthosite-magerite complexes. Previous work suggests that metamorphism consisted of two high temperature events at 1.45 Ga (MI)
Edwards, Katrina
core  

Crustal growth: Some major problems [PDF]

Fundamental problems with models currently used to explain the genesis and evolution of continental crust were raised. These problems focus around the difficulty of generating the upper continental crust from a lower crustal or mantle protolith without ...
Arculus, R. J.
core   +1 more source