Results 61 to 70 of about 7,088 (223)

Carbonate sedimentology: An evolved discipline

The Depositional Record, Volume 12, Issue 1, February 2026.
Abstract Although admired and examined since antiquity, carbonate sediment and rock research really began with Charles Darwin who, during a discovery phase, studied, documented and interpreted their nature in the mid‐19th century. The modern discipline, however, really began after World War II and evolved in two distinct phases.
Noel P. James, Peir K. Pufahl
wiley   +1 more source

Biogenic non-crystalline U (IV) revealed as major component in uranium ore deposits [PDF]

, 2017
Historically, it is believed that crystalline uraninite, produced via the abiotic reduction of hexavalent uranium (U (VI)) is the dominant reduced U species formed in low-temperature uranium roll-front ore deposits.
Bernier-Latmani, Rizlan, Bhattacharyya, Amrita, Borch, Thomas, Campbell, Kate M., Kelly, Shelley D., Roebbert, Yvonne, Weyer, Stefan   +6 more
core   +3 more sources

Iron–Phosphorus–Carbon Coupled Cycling in Lacustrine System of Ordos Basin During the Middle Triassic

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 2, February 2026.
Abstract Widespread organic‐rich shales are associated with perturbations in productivity or preservation conditions; however, the major controlling factors, especially the phosphorus (P) and iron (Fe) interactions and their impacts on organic carbon burial in the paleolake ecosystem remain poorly understood.
Bo Wang, Rukai Zhu, Pengcheng Ju, Quanyou Liu, Weiming Xu, Peng Li, Wang Zhang, Xinping Liang   +7 more
wiley   +1 more source

Uranium resource of Europe: Development status, metallogenic provinces and geodynamic setting

Energy Strategy Reviews
Since the 21st century, the closure of domestic uranium mines in Europe has made it one of the world's leading importers of uranium. In recent years, a series of policy adjustments have led to an improving situation for enriched uranium supply, yet the ...
Zexin Wang, Hao Song, Youliang Chen, Jiye Song, Mingcai Hou, Qi Li, Qianmin Du, Huijie Yu   +7 more
doaj   +1 more source

Origin of the supergiant Olympic Dam Cu-U-Au-Ag deposit, South Australia: Was a sedimentary basin involved? [PDF]

, 2011
The supergiant Olympic Dam Cu-U-Au-Ag ore deposit of South Australia occurs in a tectonic-hydrothermal breccia complex that is surrounded by Mesoproterozoic granite.
Chambefort, I, Ehrig, K, Green, N, Kamenetsky, VS, McPhie, J   +4 more
core   +1 more source

Reconstructing Environmental and Microbial Ecosystem Changes Across the Permian–Triassic Mass Extinction at Lusitaniadalen, Svalbard

Paleoceanography and Paleoclimatology, Volume 41, Issue 2, February 2026.
Abstract The Permian–Triassic environmental crisis triggered fundamental changes in marine ecosystems, culminating in the most severe biodiversity crisis of the Phanerozoic. Yet, the environmental and geochemical conditions governing the crisis and ecosystem recovery remain debated.
S. Z. Buchwald, A. B. Frank, D. Birgel, K. Senger, T. Mosociova, Y. Pei, B. Beaty, L. G. Tarhan, F. Galasso, M. A. Gómez Correa, S. E. Grasby, U. Struck, D. Yuan, R. Steinkrauss, J. Gliwa, N. Lahajnar, J. Peckmann, W. J. Foster   +17 more
wiley   +1 more source

Ore Zoning, Geochemistry and Genesis of Iron Mineralization in Hormuz Volcano-Sedimentary Sequence, Larak Island, South of Bandar Abbas

Journal of Economic Geology, 2023
Iron mineralization has occurred in Larak Island, located 30 km south of Bandar Abbas, within the Persian Gulf, in the Zagros structural zone. Stratigraphically, Larak Island dominantly consists of the Late Proterozoic Hormuz volcanic-sedimentary series,
Yousef Alizadeh Fard , Fardin Mousivand
doaj   +1 more source

Geologi Dan Potensi Terbentuknya Mineralisasi Uranium Tipe Batupasir Di Daerah Hatapang, Sumatera Utara [PDF]

, 2013
Kajian ini dilatarbelakangi oleh tataan geologi daerah Hatapang Sumatera Utara yang diidentifikasi sebagai daerah favourable bagi terbentuknya mineralisasi uranium tipe batupasir.
Ngadenin, N. (Ngadenin)
core   +2 more sources

Timing and Style of Tectonic Assembly and Exhumation of the McHugh Complex Within the Chugach‐Kodiak Accretionary Wedge, Alaska

Tectonics, Volume 45, Issue 2, February 2026.
Abstract Accretionary complexes are key archives of subduction zone processes, preserving records of forearc growth, deformation, and tectonic reorganization. The Chugach–Kodiak accretionary complex of southern Alaska records Jurassic to Cretaceous underplating at shallow to intermediate subduction conditions. The McHugh Complex, an imbricated sequence
Ismay Vénice Akker, Whitney M. Behr, Maria Giuditta Fellin, Emily Hinshaw, Luiz Morales, Zoe Braden, Mark Helper, Lonnie J. Hufford, Markus Rast, Lorenzo Tavazzani   +9 more
wiley   +1 more source

Metalliferous Biosignatures for Deep Subsurface Microbial Activity [PDF]

, 2015
Acknowledgments We thank the British Geological Survey (BGS) for the provision of samples and the Science & Technology Facilities Council (STFC) grant (ST/L001233/1) for PhD funding which aided this project.
Bowden, Stephen, Brolly, Connor, Parnell, John, Spinks, Sam   +3 more
core   +1 more source