Results 51 to 60 of about 3,576 (220)

Transfer of Strontium and Carbon From Subducting Sediment Into the Leading Edge of the Mantle Wedge

Geochemistry, Geophysics, Geosystems
Carbon mobilization at subduction zones can be constrained by focusing on Sr as a proxy, as Sr readily substitutes for Ca—a major cation in the crystal structures of carbonates. Unmelted high/ultrahigh pressure (HP/UHP) pelitic metasediments exhumed from
Amol Dayanand Sawant, Peter B. Kelemen, Matthew Jerram, Martin Q. Fleisher, Louise Bolge, Juan Carlos de Obeso, Diego Fernandez   +6 more
doaj   +1 more source

Does Palsa Thaw in Northern Finland Contribute to Remobilisation of Metals Accumulated in Peat Into Surface Waters?

Land Degradation &Development, Volume 37, Issue 9, Page 4230-4250, 30 May 2026.
ABSTRACT Permafrost is rapidly degrading in the sporadic zone, including palsa mires in Scandinavia. Peatlands in the area have likely accumulated heavy metals from atmospheric deposition of industrial contaminants in the wider region. As the palsa mire chemical composition is not well known, and in other permafrost regions the permafrost thaw may ...
Joanna Katarzyna Jóźwik, Krystyna Kozioł, Marcin Frankowski, Marta Jakubiak, Kamil Nowiński, Mariusz Jędrysek, Danuta Szumińska, Żaneta Polkowska   +7 more
wiley   +1 more source

Fault-Related Controls on Upward Hydrothermal Flow: An Integrated Geological Study of the Têt Fault System, Eastern Pyrénées (France)

Geofluids, 2017
The way faults control upward fluid flow in nonmagmatic hydrothermal systems in extensional context is still unclear. In the Eastern Pyrénées, an alignment of twenty-nine hot springs (29°C to 73°C), along the normal Têt fault, offers the opportunity to ...
Audrey Taillefer, Roger Soliva, Laurent Guillou-Frottier, Elisabeth Le Goff, Guillaume Martin, Michel Seranne   +5 more
doaj   +1 more source

Uranium Minerals in the Radlovac Series Metasediments at Mt. Papuk, Croatia

Geologia Croatica, 2008
Applying a combination of different methods – X-ray diffraction, scanning electron microscopy, gamma-spectroscopy and X-ray spectroscopy, a suite of uranium minerals, meta-torbernite, meta-uranospinite and meta-zeunerite was identified in ...
Stjepan Šćavničar, Vladimir Bermanec, Goran Kniewald, Delko Barišić, Višnja Oreščanin   +4 more
doaj   +1 more source

Geochemistry and Petrology of Metasediments Associated with Gold Mineralization in Imonga Area, Eastern DR Congo

, 2023
The Imonga sector is located in the Eastern of DR Congo, precisely within the Maniema province located in the Central African Karagwe Ankole belt, which forms together with the Kibara belt a Mesoproterozoic geological structure.
Mulumba, Raha, Akuzwe, Daniel, Mukingi B., Elia, Germain, Bishikwabo K., Parfait, Mupenge M., Lunkomo, Sicke   +5 more
core  

Sub-Basaltic sediments and metasediments of Mersey- Forth Area

Papers and proceedings of the Royal Society of Tasmania, 1967
Lacustrine sediments and silicified river gravels, slope deposits, in situ weathered material and joint fillings of Tertiary age in the Mersey-Forth area are described. An assessment is made of Tertiary drainage directions and the degree of post-basalt downcutting.
openaire   +1 more source

Are Estimates of Lower Continental Crust Bulk Composition Biased Due to Seismic Anisotropy?

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 5, May 2026.
Abstract Most seismic inferences on the bulk composition of the lower continental crust are based on P‐wave velocities inferred from seismic wide‐angle data, for which the direction of propagation in the target region is sub‐horizontal. Given the likely presence of anisotropy in many parts of the lower continental crust, these estimates could be biased
Zheng Luo, Othmar Müntener, György Hetényi, Klaus Holliger   +3 more
wiley   +1 more source

Provenance and Petrological Evolution of Sand Injection Complexes: Insights From Heavy Mineral Analysis in the Paleogene Forearc Succession of the San Joaquin Basin

Basin Research, Volume 38, Issue 3, May–June 2026.
The study of heavy mineral assemblages with statistical analysis resolves provenance signatures and quantifies syn‐emplacement modification of sand injection complexes. Results demonstrate transformative petrological processes, including density‐dependent hydraulic sorting and mechanical grain degradation.
Gustavo Zvirtes, Andrew Morton, Andrew Hurst, Ruy Paulo Philipp, Wiktor Luzinski, Giuseppe Palladino, Luciano Alessandretti   +6 more
wiley   +1 more source

Tectonic Interplay in the Gulf of Cagliari (Italy): Extension, Compression and Strike‐Slip Movements

Basin Research, Volume 38, Issue 3, May–June 2026.
Since the Oligocene, extensional tectonics of the Sardinia Rift and Campidano Graben interacted with the collision between Sardinia and northern Africa, generating reverse faults. At the Plio‐Quaternary boundary, compressional tectonics resumed, shaping the southern margin of the gulf through transpressional tectonics of the exposed Ichnusa High ...
Anna Del Ben, Silvana Fais, Riccardo Geletti, Maria Cristina Caradonna, Veronica Frisicchio, Giuseppe Brancatelli   +5 more
wiley   +1 more source

Chlorine isotope constraints on fluid‐rock interactions during subduction and exhumation of the Zermatt‐Saas ophiolite

Geochemistry, Geophysics, Geosystems, 2013
Chlorine isotope compositions of high‐pressure (∼2.3 GPa) serpentinite, rodingite, and hydrothermally altered oceanic crust (AOC) differ significantly from high‐ and ultrahigh‐pressure (> 3.2 GPa) metasedimentary rocks in the Aosta region, Italy ...
J. Selverstone, Z. D. Sharp
doaj   +1 more source