Results 71 to 80 of about 12,638 (229)

A new look at the geodynamic development of the Ediacaran–early Cambrian forearc basalts of the Tannuola-Khamsara Island Arc (Central Asia, Russia): Conclusions from geological, geochemical, and Nd-isotope data

Open Geosciences
Oceanic igneous rocks throughout the Altai-Sayan Fold Belt (ASFB) in central-southern Siberia are often considered to be late Precambrian–early Paleozoic accreted elements of oceanic crust – often of uncertain paleogeographic or geodynamic origin.
Mongush Andrey Alexandrovich, Olschewski Pascal   +1 more
doaj   +1 more source

Dynamics of intraoceanic subduction initiation: 1. Oceanic detachment fault inversion and the formation of supra-subduction zone ophiolites [PDF]

, 2015
Subduction initiation is a critical link in the plate tectonic cycle. Intraoceanic subduction zones can form along transform faults and fracture zones, but how subduction nucleates parallel to mid-ocean ridges, as in e.g., the Neotethys Ocean during the ...
Agard, Allerton, Allken, Amiguet, Andreani, Antony Morris, Bach, Bach, Baines, Barth, Barth, Beard, Beccaluva, Beccaluva, Blackman, Blackman, Bortolotti, Bortolotti, Bortolotti, Bortolotti, Bortolotti, Boschi, Boschi, Boschi, Buiter, Cann, Cannat, Carosi, Casey, Cedric Thieulot, Chiari, Chiari, Chiari, Chiari, Dewey, Dick, Dilek, Dimo-Lahitte, Douwe J. J. van Hinsbergen, Escartin, Escartín, Escartín, Escartín, Escartín, Gaggero, Gaina, Garcés, Gerya, Gray, Grimes, Guillot, Gurnis, Hall, Hilairet, Hinsbergen, Ildefonse, Ishizuka, Jenner, Karato, Karson, Klein, Leng, Leng, Liati, Mackwell, MacLeod, MacLeod, MacLeod, Maffione, Maffione, Marco Maffione, Marcucci, Marcucci, McKenzie, Meshi, Moore, Moore, Moores, Morris, Morris, Mével, Nicolas, Oliver Plümper, Pearce, Plümper, Plümper, Prela, Prela, Reagan, Reston, Robertson, Roddick, Saccani, Saccani, Sauter, Scherreiks, Schmid, Schroeder, Schroeder, Shervais, Smith, Smith, Smith, Spray, Spray, Stern, Stern, Stern, Thieulot, Torsvik, Toth, Tremblay, Tremblay, Tucholke, van Hinsbergen, Vissers, Whitney, Wim Spakman   +117 more
core   +2 more sources

Hornblendite in the Lower Crust: A Possible Source for Porphyry Cu Deposits

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 5, May 2026.
Abstract Lower crustal sulfide‐bearing Cu‐rich cumulates, mainly occurring as hornblendite, have been proposed as a critical source component for the development of giant porphyry Cu deposits (PCDs); however, their mineralogical and geochemical nature remain elusive.
Guangxu Li, Lingsen Zeng, Li‐E. Gao, Lilong Yan, Haitao Wang, Linghao Zhao   +5 more
wiley   +1 more source

High pressure metamorphism of ophiolites in Cuba [PDF]

, 2006
High-pressure metamorphic complexes of ophiolitic material in Cuba trace the evolution of the northern margin of the Caribbean Plate during the Mesozoic.
García-Casco, A., Iturralde-Vinent, M.A., Lázaro, C., Millán, G., Núñez Cambra, K., Rodríguez Vega, A., Torres-Roldán, R.L.   +6 more
core   +3 more sources

Quantitative Assessment of Peridotite Tectonomagmatic Affinities Using Compositional Data Analysis and Explainable Machine Learning

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 5, May 2026.
Abstract Peridotites record the compositional evolution of the lithospheric and asthenospheric mantle across plume‐related lithospheres, convergent margins, and rift‐related volcanic environments; however, their tectonomagmatic affinities are commonly difficult to resolve using traditional low‐dimensional geochemical discrimination diagrams.
Swarnendu Roy, Koushik Sen
wiley   +1 more source

An assessment of global resources of rocks as suitable raw materials for carbon capture and storage by mineralisation [PDF]

, 2014
Carbon capture and storage by mineralisation (CCSM) is a method proposed for capturing CO2 by reacting it with magnesium in ultramafic rocks to form carbonate minerals and silica. Large quantities of magnesium silicate rocks are required for this process
Bide, T.P., Naden, J., Styles, M.T.
core   +2 more sources

Chemical Geodynamics of Granitoid Magmatism During a Pacific‐Philippine Sea Plate Transition in Southwest Japan

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 5, May 2026.
Abstract Granitoid magmatism along the western Pacific margin records interactions between subduction dynamics and crust–mantle processes; however, the links between plate reorganization and magma‐source evolution remain debated. Here we integrate U–Pb zircon geochronology with Pb–Sr–Nd–Hf isotope systematics to investigate Cretaceous–Paleogene ...
Nghiem V. Dao, Tsegereda A. Yemer, Tulibako T. Mwaisuba, Chie Sakaguchi, Hiroshi Kitagawa, Katsura Kobayashi, Teruyoshi Imaoka, Eizo Nakamura   +7 more
wiley   +1 more source

Geochemical Features of Ultramafic Rocks and Formation of Magnesium–Bicarbonate Groundwaters in the Kraka Massif Area (Southern Urals)

Geosciences
The observed shortage of water resources in the western and southern regions of the Russian Federation may soon affect the territory of the Republic of Bashkortostan. An increase in the share of groundwaters can help to solve this problem. To provide the
Timur D. Shabutdinov, Rafil F. Abdrakhmanov, Dmitry E. Saveliev, Alexandra O. Poleva, Elena A. Mashkova, Alexander V. Snachev, Ruslan A. Gataullin, Vera N. Durnaeva, Aidar A. Samigullin   +8 more
doaj   +1 more source

The Cogne magnetite deposit (Western Alps, Italy): a Jurassic seafloor ultramafic-hosted hydrothermal system? [PDF]

, 2017
The Cogne magnetite deposit (Western Alps, Italy) is the largest in a series of apatite and sulphide-free magnetite orebodies that are hosted in serpentinites belonging to western Alpine ophiolitic units.
Toffolo, Luca
core   +1 more source

Epidote Records (De)hydration From the Seafloor Through Subduction and Underplating: Implications for Subduction Zone Fluid Budgets and Slow Slip

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 4, April 2026.
Abstract When, where, and how much fluid is released from subducting oceanic crust control deformation, element cycling, and magmatism in subduction zones. However, the palimpsest of tectonometamorphic processes in the exhumed rock record complicates the relation of geologic observations to geodynamic models of subduction fluid sources and transport ...
P. C. Lindquist, C. B. Condit, W. F. Hoover, V. E. Guevara, G. S. Epstein   +4 more
wiley   +1 more source