Results 51 to 60 of about 343 (178)

Sequential Wedge Extrusion to Core Complex Extension: The Central Cycladic Detachment System on Syros, Greece

Tectonics, Volume 45, Issue 7, July 2026.
Abstract Syros island preserves pristine high‐pressure metamorphic rocks and provides invaluable insight into subduction zone processes. Contrasting views on the structural history impede placing the island in a clear tectonic framework, limiting the broader impact of preserved information.
Bertram Uunk, Fraukje Brouwer, Manuel de Paz‐Álvarez, Sander Taal, Lisa van de Beek, Martijn Ephraim, Guido Jonker, Naomi van den Ameele, Zoë Toorenburg, Boris Versteegh, Marjolein Daeter, Jan Wijbrans   +11 more
wiley   +1 more source

P–T Modelling Constrains the Depth of Emplacement of the Porto Azzurro Pluton and Implies Minor Exhumation Caused by the Zuccale Fault (Island of Elba, Italy)

Journal of Metamorphic Geology, Volume 44, Issue 6, Page 440-469, July 2026.
ABSTRACT Understanding the pressure of emplacement of granitic intrusions is crucial to understanding the exhumation history of plutons and constraining the tectonic setting of magma emplacement. However, P–T and geochronological constraints from exhumed plutons are often characterized by large uncertainties, especially in shallow crustal settings with
Samuele Papeschi, Marco Bonini, Matteo Lupi, Chiara Del Ventisette, Domenico Montanari   +4 more
wiley   +1 more source

Spatial Relations between Geological Structures and Precious and Base Metal Deposits from Magnetic Investigation of the Pangar-Djérem Zone, Cameroon

International Journal of Geophysics, 2023
The version three of Earth Magnetic Anomaly Grid (EMAG2-v3) used in this work is aimed at establishing the spatial relationships between tectonic structures and gold and associated mineralization in the Pangar-Djérem area, central and southern Cameroon ...
Constantin Mathieu Som Mbang, Marcelin Pemi Mouzong, Li Zhen Cheng, Jocelyne Laure Megne Tafone, Charles Antoine Basseka, Joseph Kamguia, Jacques Etamè   +6 more
doaj   +1 more source

Hyperspectral Fingerprinting of Dune Sediments Across the Arabian Peninsula: Insights Into Sediment Provenance and Transport Pathways From NASA's EMIT Data

Geophysical Research Letters, Volume 53, Issue 12, 28 June 2026.
Abstract The Arabian Peninsula encompasses one of the world's most extensive aeolian systems, yet the provenance and transport history of its dune sediments are not well understood. Using hyperspectral data from NASA's Earth Surface Mineral Dust Source Investigation (EMIT), we mapped mineral compositions and abundance patterns across dune fields and ...
Ahmed Alshakr, Mohamed Sultan, Mustafa Kemal Emil, Hassan Alharbi, Fahad Alshehri, Abdullah A. Alotaibi, Abdullah T. Mohammad, Aylin Yildirim, Neil C. Sturchio   +8 more
wiley   +1 more source

Petrology and structure of the early Proterozoic Pirilä gold deposit in southeastern Finland [PDF]

Bulletin of the Geological Society of Finland, 1988
The Pirilä gold deposit is located in the southeastern part of the Ladoga-Botnian Bay Zone, in a volcano-sedimentary environment metamorphosed under PT conditions of the amphibolite facies.
H. Makkonen, E. Ekdahl
doaj   +1 more source

Structure and Composition of Basement and Sedimentary Cover in the Southwestern Part of the Siljan Ring, Central Sweden: New Data from the C-C-1 Drill Core

Geosciences, 2021
The results from the geological and geophysical investigations of the Siljan Ring impact structure (central Sweden) have shown that the Paleozoic sedimentary succession and the Precambrian basement were strongly affected by complex deformational ...
Olga Sivalneva, Alexandr Postnikov, Vladimir Kutcherov, Marianna Tuchkova, Alexandr Buzilov, Viktor Martynov, Ilnur Sabirov, Elisaveta Idrisova   +7 more
doaj   +1 more source

Geochemical and Isotopic Constraints on Long‐Lived Source Enrichment and Mantle Evolution in Paleoproterozoic Cratonic Lamprophyres

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 6, June 2026.
Abstract The cratonic lithospheric mantle records complex metasomatic processes and is frequently tapped by alkaline magmatism, offering a unique opportunity to trace the progressive evolution of the mantle. In the present contribution, we investigate a newly identified calc‐alkaline lamprophyre field from the Neoarchean Jonnagiri Schist Belt, Eastern ...
Sourav Naskar, Rohit Pandey, Nils Björn Baumann, N. V. Chalapathi Rao, George Mathew, J. Amal Dev, J. K. Tomson   +6 more
wiley   +1 more source

Impact and Crystallization Modeling of the Sudbury Basin and Its Implications for a Hadean Crust

Journal of Geophysical Research: Planets, Volume 131, Issue 6, June 2026.
Abstract The 1.85 Ga Sudbury Structure hosts Earth's largest and best‐preserved impact‐induced melt sheet, the Sudbury Igneous Complex (SIC), which crystallized into distinct noritic, gabbroic, and granophyric layers. We conduct impact simulations with iSALE‐2D and crystallization modeling using alphaMELTS 2 to track the formation and evolution of the ...
Nicolas B. Litza, Miki Nakajima, J. Brian Balta, Steven B. Shirey, Dustin Trail, Kim A. Cone, Ian Szumila, Rasmus Haugaard, Taus R. C. Jørgensen, Scott D. Hull, Michael R. Ackerson   +10 more
wiley   +1 more source

Modeling the Anthropogenic Effects on Watershed Evolution Trajectory: An Example From the Chestatee River in Northern Georgia, USA

Journal of Geophysical Research: Earth Surface, Volume 131, Issue 6, June 2026.
Abstract Human activities shape erosion dynamics and landscape evolution, making effective modeling approaches essential for understanding these impacts. This study utilizes landscape evolution models with a streamlined parameterization process to evaluate the anthropogenic effects on the erosional trajectory of the Chestatee River watershed in ...
Christopher E. Sheehan, Mark D. Behn, Noah P. Snyder, Travis A. Dahl, Ilan Valencius   +4 more
wiley   +1 more source

Peixe Zircon as a Quality Control Reference Material in U‐Pb Geochronology by LA‐ICP‐MS

Geostandards and Geoanalytical Research, Volume 50, Issue 2, Page 369-389, June 2026.
Key Points Peixe#0 zircon was characterised for U‐Pb geochronology using CA‐ID‐TIMS, SIMS and a long‐term LA‐ICP‐MS data set. The consistent results establish Peixe#0 as a reference material for U‐Pb quality control. Trace element heterogeneity requires careful, CL‐guided spot selection.
Margareth Sugano Navarro, Erica Martini Tonetto, Elson P. Oliveira, Mauricio Ibañez‐Mejia, Cristina Talavera, Neal J. McNaughton, Jacinta Enzweiler, Michael Wiedenbeck   +7 more
wiley   +1 more source