Results 111 to 120 of about 23,060 (244)

Porous and Permeable Crystalline Basement: Evidence for Large‐Scale Hydraulic Connectivity at Kivetty, Finland

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 9, September 2026.
Abstract Porosity and permeability in crystalline shield basement are commonly assumed to be low, yet some fault zones sustain fluid circulation over kilometer scales. Here we quantify multiscale fault‐zone connectivity at Kivetty, central Finland, by integrating legacy deep‐borehole data, including packer tests, downhole logs, and a long‐term multi ...
Daniel Carbajal‐Martínez, Michael J. Heap, Ester M. Jolis, Toni Luoto, Thierry Reuschlé, Satu Vuoriainen, Jukka Kuva, Evgenii Kortunov, Alan Bischoff   +8 more
wiley   +1 more source

Why Does the Broken Hill Deposit Sit in Resistive Crust? Magnetotelluric Evidence for Metamorphic Decoupling of a World‐Class Mineral System

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 9, September 2026.
Abstract The spatial association between electrical conductors and ore deposits underpins the widespread use of magnetotellurics (MT) in mineral exploration, yet not all mineral systems preserve a diagnostic conductive signature. Here, we present a high‐resolution MT study of the region hosting the world‐class Broken Hill Pb‐Zn‐Ag deposit (NSW ...
Yahya AlQahtani, Sinan Özaydın, Vasileios Chatzaras, Patrice F. Rey, Tiago Passos   +4 more
wiley   +1 more source

Assessment of the contribution of Precambrian deposits in forming the petroleum potential of the eastern part of the Volga-Urals basin using results of modeling

Записки Горного института
Consideration is given to results of geochemical analysis of organic matter and oils of the Proterozoic (the RF-V complex) and the Paleozoic (the pay intervals D2, D3, C1-2) of the eastern part of the Volga-Urals petroleum basin.
Dmitrii D. Kozhanov, Mariya Bolshakova
doaj  

Formation and Alteration of Magnesite Nodules From Kunwarara, Queensland, Australia, as an Analog to Mg‐Carbonate Formation on Mars

Journal of Geophysical Research: Planets, Volume 131, Issue 9, September 2026.
Abstract Magnesite (MgCO3) is a magnesium (Mg) carbonate mineral that records the aqueous environmental conditions of its formation. On Earth, magnesite forms in metamorphic, diagenetic or pedogenic environments, and distinguishing between these environments is critical for understanding the fluid chemistry during magnesite precipitation. Mg carbonates
E. L. Cardarelli, T. M. Present, P. M. Vasconcelos, L. C. Kah, C. Swindle, S. Bhattacharjee, K. Farley   +6 more
wiley   +1 more source

Linking Tectonics and Cratonic Vertical Motions: Deep‐Time Thermochronology Reveals >1,000 Myr of Low‐Temperature Conditions in Southeastern Finland

Tectonics, Volume 45, Issue 9, September 2026.
Abstract The Fennoscandian Shield potentially hosts the longest continuous habitable conditions for Earth's deep biosphere. Billion‐year equilibrium freeboard conditions of cratons and the longevity of deep biosphere microbial communities are directly related through the thermal histories of rocks that host these communities.
Josh Isaacs, William Guenthner, Henrik Drake, C. Brenhin Keller, Kalin T. McDannell   +4 more
wiley   +1 more source

Episodic growth of Precambrian lower crust beneath the North China Craton: A synthesis

, 2012
A comprehensive review of U-Pb geochronology and Hf isotopes of zircons separated from granulite xenoliths entrained in Phanerozoic magmatic rocks and inherited xenocrysts from the associated lower crust rocks from various domains of the North China ...
Ying, JF, Zhang, HF, Zhao, GC, Santosh, M, Ji-Feng Ying, M. Santosh, Ying, J., Guo-Chun Zhao, Zhang, H., Hong-Fu Zhang, Santosh, M., Zhao, G.   +11 more
core   +1 more source

Provenance Constraints on Early India–Asia Collision: Evidence From the Late Cretaceous–Early Cenozoic Sulaiman–Katawaz Basin Fill

Basin Research, Volume 38, Issue 5, September‐October 2026.
Integrated detrital zircon U–Pb, Nd–Sr isotopes and thermochronology record western Indian‐margin provenance reorganisation. Late Cretaceous–Palaeocene sediment supply was Indian‐affinity; Asian‐affinity input appeared across the Palaeocene–Eocene transition (~56.5–54.7 Ma), suggesting India–Asia collision was underway, while mixed provenance persisted
Nowrad Ali, Edward R. Sobel, Anne Bernhardt, Humaad Ghani, Muhammad Sajid, Mohibullah Mohibullah, Axel Gerdes, Jessica A. Stammeier, Johannes Glodny   +8 more
wiley   +1 more source

Biosignature Preservation in Stromatolites From the Carri Laufquen Lakes System, Patagonia: Implications for Martian Palaeolacustrine Environments

Geobiology, Volume 24, Issue 5, September/October 2026.
ABSTRACT The Carri Laufquen Lakes System is a highly alkaline, basalt‐hosted lacustrine environment in northern Patagonia, Argentina. Diverse morphologies of Late Pleistocene sub‐fossil stromatolites occur along the lakeshores. Using detailed optical and electron microscopy, spectroscopy and organic geochemical analyses, this study shows that ...
Victor Amir Cardoso Dorneles, Maëva Millan, Fernando J. Gómez, Primož Šket, Jens Najorka, Cindy Broderick, Wren Montgomery, Barbara Cavalazzi, Keyron Hickman‐Lewis   +8 more
wiley   +1 more source

Adaptation of Microbialite‐Associated Prokaryotic Communities to Natural and Experimental Anoxic Conditions

Geobiology, Volume 24, Issue 5, September/October 2026.
ABSTRACT Microbialites are rocks formed by microbial communities that influence, promote, and/or control the precipitation of mineral phases. The oldest microbialites date back to the Archean and formed under globally anoxic conditions. Accordingly, modern microbialites developing under oxic conditions are limited analogs of their earliest predecessors.
Jeanne Caumartin, Karim Benzerara, Ana Gutiérrez‐Preciado, Miguel Iniesto, Paola Bertolino, Maria Ciobanu, Christophe Thomazo, Robin Havas, Didier Jézéquel, Philippe Deschamps, Rosaluz Tavera, David Moreira, Purificaciόn Lόpez‐Garcίa   +12 more
wiley   +1 more source

DNA barcoding uncovers two putative new species in Trachelyopterus (Siluriformes: Auchenipteridae)

Journal of Fish Biology, Volume 109, Issue 3, Page 1856-1865, September 2026.
Abstract Trachelyopterus is a cryptic genus within the Neotropical catfish family Auchenipteridae with a complex history of taxonomic revisions. Despite the notable morphological and genetic similarities among its species, some studies suggest that the genus harbours greater diversity than is currently recognized, including additional species yet to be
Fiorindo José Cerqueira, Maelin da Silva, Chrystian Aparecido Grillo Haerter, Sandra Mariotto, Liano Centofante, Eliana Feldberg, Orlando Moreira Filho, Vladimir Pavan Margarido, Daniel Rodrigues Blanco, Roberto Laridondo Lui   +9 more
wiley   +1 more source