Results 51 to 60 of about 9,063 (215)

Cooling‐Induced Rheological Weakening Along the Nascent Plate Interface—A Mechanism for Catastrophic Subduction Initiation?

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 1, January 2026.
Abstract Subduction initiation often begins with slow, forced convergence, switches “on” catastrophically as the slab collapses into the mantle, and then evolves to steady‐state, self‐sustained sinking that drives global plate movements. Numerical models suggest that the collapse phase implies sudden weakening of the plate interface.
Alissa J. Kotowski, Caroline E. Seyler, James D. Kirkpatrick, Douwe J. J. van Hinsbergen   +3 more
wiley   +1 more source

Chemical and Mineralogical Characteristics of the Microscopic-sized Epidotes in the Metamorphic Basement Rocks within the Late Cretaceous Hatip Ophiolitic Melange in Konya Central Southern Turkey

Hittite Journal of Science and Engineering, 2019
A metamorphism in green-schist facies conditions. The epidote crystals is subhedral to eu- hedral, with high Al2O3 26-30 % and low Fe2O3 5–8% contents.
Kerim Kocak, Raziye Merve Kaya
doaj   +1 more source

Delineation of Copper Mineralization Zones at Wadi Ham, Northern Oman Mountains, United Arab Emirates Using Multispectral Landsat 8 (OLI) Data

Frontiers in Earth Science, 2020
Copper deposits in the ultramafic rocks of the Semail ophiolite massifs is found to be enormous in the region of northern Oman Mountains, United Arab Emirates.
Fares M. Howari, Habes Ghrefat, Yousef Nazzal, Mahmoud A. Galmed, Osman Abdelghany, Abdel Rahman Fowler, Manish Sharma, Fatima AlAydaroos, Cijo M. Xavier   +8 more
doaj   +1 more source

Deep Sources of Recent Volcanism in Armenia Inferred From Ambient Noise Tomography

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 1, January 2026.
Abstract We perform Rayleigh wave ambient noise tomography to investigate crustal seismic velocity structure and sources of volcanism in Armenia. Armenia, a key part of the tectonically and volcanically active Caucasus‐Anatolia region, is actively being deformed by the ongoing Arabian‐Eurasian continental collision.
Kh. Meliksetian, L. Sargsyan, I. Koulakov, N. Toghramadjian, N. Belovezhets, Y. Berezhnev, G. Navasardyan, E. Grigoryan, A. Vasilevsky, E. Sahakyan   +9 more
wiley   +1 more source

Stratigraphy of Carbonate‐Bearing Rocks at the Margin of Jezero Crater, Mars: Evidence for Shoreline Processes?

Journal of Geophysical Research: Planets, Volume 131, Issue 1, January 2026.
Abstract Martian carbonate‐bearing rocks are compelling targets for exploration because they preserve detailed records of past aqueous processes, climate, and habitability. The Margin unit in Jezero crater is a distinct olivine‐ and carbonate‐bearing unit stratigraphically underlying the western fan, lining the inner margin of the western crater rim ...
Alexander J. Jones, Sanjeev Gupta, Robert Barnes, Briony H. N. Horgan, Kenneth H. Williford, Gerhard Paar, Kathryn. M. Stack, Bradley J. Garzcynski, Eleni Ravanis, Candice C. Bedford, Justin I. Simon, Athanasios Klidaras, Linda C. Kah, James F. Bell, Justin Maki, Stephen W. Lokier, Adrian Brown, Nathan R. Williams, Sanna Alwmark, Jorge I. Núñez, Fred Calef, Larry Crumpler, Alicia Vaughan, Libby R. W. Ives, Sam Gwizd, Ken Farley, Christian Tate, Nicolas Randazzo, Olivier Beyssac, Gwénaël Caravaca   +29 more
wiley   +1 more source

Formation and Alteration of Olivine‐Carbonate Rocks Within Jezero Crater as Constrained by In Situ Visible/Near‐Infrared Multispectral Images

Journal of Geophysical Research: Planets, Volume 131, Issue 1, January 2026.
Abstract Olivine‐ and carbonate‐bearing rocks are key exploration targets on Mars because of the information they can provide about magma evolution and source characteristics, implications for surface water availability and climate, and their biosignature preservation potential.
E. Ravanis, C. C. Bedford, B. Horgan, B. Garczynski, A. Vaughan, J. R. Johnson, M. Rice, A. J. Jones, S. Fagents, A. Klidaras, S. Gupta, J. Núñez, K. Lapo, E. A. Cloutis, J. F. Bell III, R. C. Wiens, A. Brown   +16 more
wiley   +1 more source

MORPHOLOGICAL AND COMPOSITIONAL FEATURES OF CHROMIAN SPINEL FROM MANTLE ULTRAMAFIC ROCKS OF THE NURALI MASSIF (SOUTH URALS) [PDF]

Минералогия, 2019
Accessory chromian spinels of lherzolites and dunites from a mantle section of the Nurali ophiolite massif are described in the paper. Lherzolites typically host anhedral chromian spinel grains associated with olivine, pyroxenes and plagioclase.
D.E. Saveliev
doaj   +1 more source

Cenozoic Evolution of the North‐Eastern Mediterranean Basins

Tectonics, Volume 45, Issue 1, January 2026.
Abstract The Eastern Mediterranean lies at the junction of the African, Arabian, and Eurasian plates, a region shaped by a long and complex tectonic history. While the Levant Basin in the southern sector has been extensively studied for hydrocarbon exploration, the northern domain offshore Cyprus, Turkey, Syria, and Lebanon remains less understood.
Nicolò Bertone, Lorenzo Bonini, Anna Del Ben, Giuseppe Brancatelli, Angelo Camerlenghi, Edy Forlin, Gian Andrea Pini   +6 more
wiley   +1 more source

Geochemistry and U–Pb Zircon Geochronology of Granite at the Pilok Sn–W Deposit, Thailand: Implications for Late Triassic Tin Metallogenesis

Resource Geology, Volume 76, Issue 1, January‐December 2026.
Zircon U–Pb dating constrains the Pilok Sn–W granite emplacement at 212–208 Ma, during the Late Triassic post‐collisional extension after the Sibumasu‐Indochina collision. This timing coincides with widespread tin‐bearing granite magmatism throughout Southeast Asia, marking a major regional metallogenic event. ABSTRACT The Pilok Sn–W deposit in western
Mallika Intachai, Ryohei Takahashi, Andrea Agangi, Marlina A. Elburg, Punya Charusiri, Pearlyn Manalo, Hinako Sato, Cendi D. P. Dana, Manuel Nopeia   +8 more
wiley   +1 more source

The Buoyancy of Cratonic Lithospheric Mantle

Geophysical Research Letters, Volume 52, Issue 24, 28 December 2025.
Abstract Cratons are generally thought to be characterized by stable, long‐lived mantle roots. However, recent studies have suggested that the lithospheric mantle may be prone to removal, implying that it may be denser than the asthenosphere. To address these suggestions, we use a global data set of mantle xenoliths to estimate the density structure of
Z. J. Sudholz, A. Copley, K. Priestley
wiley   +1 more source