Results 71 to 80 of about 4,105 (193)

Tracking Sediment Mixing Along the Lower Danube River From the Carpathians to the Black Sea

Terra Nova, Volume 37, Issue 6, Page 413-420, December 2025.
ABSTRACT We use detrital zircon U–Pb geochronology as a sediment provenance tracer in modern river sands to better understand how tectonic, climatic, and anthropogenic processes modulate sediment transport dynamics of the Carpathians to the Black Sea source to sink system.
Iulian Pojar, Tomas Capaldi, Cornel Olariu, Andrei‐Gabriel Dragoș, Relu Dumitru Roban, Mihaela C. Melinte Dobrinescu   +5 more
wiley   +1 more source

Geochemistry and U-Pb Geochronology of Late Paleozoic Magmatism in a Part of the Western Balkan Zone, NW Bulgaria

Applied Sciences
The Rzhanski granitoid pluton and Ignatitsa diorite porphyry bodies are considered Late Paleozoic in age, belonging to the Western Balkan Zone (WBZ) in Northwestern Bulgaria.
Nikolay Bonev, Petyo Filipov, Tanya Stoylkova, Tzvetomila Vladinova, Hristiana Georgieva   +4 more
doaj   +1 more source

The Tectonic, Thermal, and Temporal Controls on the Production of Lithium‐Enriched Melts

Geophysical Research Letters, Volume 52, Issue 21, 16 November 2025.
Abstract We present a new tectonically‐based method for understanding the mountain‐belt‐scale controls on the distribution of critical metals, applied to lithium ores. Lithium‐rich melts in collisional zones are produced by biotite‐breakdown reactions, so we analyze the tectonic “filters” that control whether underthrusting (meta‐)sediments reach ...
Alex Copley, Owen Weller
wiley   +1 more source

Timing of Palaeozoic magmatism in the Maggia and Sambuco nappes and paleogeographic implications (Central Lepontine Alps) [PDF]

, 2018
Magmatic rocks from the pre-Mesozoic basements of the Sambuco and Maggia nappes have been dated by U-Pb zircon ages with the LA-ICPMS technique. Several magmatic events have been identified in the Sambuco nappe.
Bussien, Denise, Bussy, François, Magna, Tomas, Masson, Henri   +3 more
core  

Black shale deposition during the Early Jurassic: Geochemistry of Pliensbachian and Toarcian sedimentary rocks of the Hunzen Well, Hils Syncline, Northwest German Basin

The Depositional Record, Volume 11, Issue 5, Page 1451-1478, November 2025.
Our research uses a multidisciplinary approach, including organic and inorganic geochemistry, biostratigraphy, carbon isotope geochemistry and organic petrography to reconstruct depositional conditions and organic matter accumulation during the Pliensbachian and Toarcian.
Premila Wijesinghe, Ralf Littke, Linda Burnaz, Martin Blumenberg, Jochen Erbacher, Thomas Mann, Florian Amann, Thorsten Bauersachs   +7 more
wiley   +1 more source

Petrophysical and geochemical characterization of the late-variscan Santa Eulália Plutonic Complex (Ossa-Morena Zone, Portugal) [PDF]

, 2012
The Santa Eulália Plutonic Complex (SEPC) is a calc-alkaline granitic body located in the northern part of the Ossa Morena Zone, composed by a medium- to coarse-grained pink granite (G0 group) involving large elongated masses of mafic (gabbroic) to ...
Cruz, Cláudia, Gomes, Celeste, Lopes, José Carrilho, Machado, Joana, Nogueira, Pedro, Sant'Ovaia, Helena   +5 more
core  

Isotopic and geochemical constraints on lead and fluid sources of the Pb-Zn-Ag mineralization in the polymetallic Tighza-Jbel Aouam district (central Morocco), and relationships with the geodynamic context [PDF]

, 2017
International audienceThe Wsingle bondAu, Pbsingle bondZnsingle bondAg, and Sbsingle bondBa mineralizations of the polymetallic Tighza-Jbel Aouam district (central Meseta, Morocco), are hosted in Paleozoic rocks surrounding late-Carboniferous granitic ...
Boulvais, Philippe, Bounajma, Hassan, Burnard, Pete, Cheilletz, Alain, Deloule, Etienne, Gasquet, Dominique, Mantoy, Tristan, Reisberg, Laurie, Rossi, Magali, Tarrieu, Leïla   +9 more
core   +3 more sources

Geoarchaeological Perspectives on Stelae Production Throughout the Bronze Age: Provenance, Material Properties and Rock Selection at Zebros (Idanha‐a‐Nova, Portugal)

Geoarchaeology, Volume 40, Issue 6, November/December 2025.
ABSTRACT At Monte dos Zebros (Idanha‐a‐Nova, Central Portugal), the discovery of three stelae—two Iberian Late Bronze Age stelae and one fragment of an Early/Middle Bronze Age anthropomorphic stela—represents a rare case of rock art monuments from different chronologies coexisting in the same place within a broader archaeological landscape, which ...
Rafael Ferreiro Mählmann, Ralph Araque Gonzalez, Dirk Scheuvens, Pedro Baptista, Francisco Henriques   +4 more
wiley   +1 more source

The Upper Crustal Structure of the Eifel Volcanic Region (Southwest Germany) From Local Earthquake Tomography Using Large‐N Seismic Network Data

Journal of Geophysical Research: Solid Earth, Volume 130, Issue 11, November 2025.
Abstract From September 2022 to August 2023, a temporary large‐N seismic experiment with more than 494 station locations was conducted in the Eifel volcanic fields of southwest Germany, where massive intracontinental maars and explosive centers are distributed. The last major eruption occurred at the Laacher See volcano (LSV) only 13 ka ago.
Hao Zhang, Torsten Dahm, Christian Haberland, Marius Paul Isken, Patrick Laumann, Pınar Büyükakpınar   +5 more
wiley   +1 more source

From Magma Formation to Eruption: Temperature Path of Two Late Carboniferous Post‐Collisional Calderas (Bohemian Massif)

Geochemistry, Geophysics, Geosystems
The thermal evolution of magmatic systems of the Altenberg‐Teplice and Tharandter Wald calderas, which erupted during the terminal post‐collisional phase of the Variscan orogeny in the Bohemian Massif, was investigated. The zircon saturation temperatures
I. Olšanská, F. Tomek, C. Robustelli Test, E. Zanella, M. Svojtka, J. Trubač, F. Cifelli, F. Finger   +7 more
doaj   +1 more source