Results 91 to 100 of about 388,584 (268)

Stored mafic/ultramafic crust and early Archean mantle depletion [PDF]

Both early and late Archean rocks from greenstone belts and felsic gneiss complexes exhibit positive epsilon(Nd) values of +1 to +5 by 3.5 Ga, demonstrating that a depleted mantle reservoir existed very early.
Chase, Clement G., Patchett, P. J.
core   +1 more source

A primordial origin for the atmospheric methane of Saturn's moon Titan [PDF]

, 2009
The origin of Titan's atmospheric methane is a key issue for understanding the origin of the Saturnian satellite system. It has been proposed that serpentinization reactions in Titan's interior could lead to the formation of the observed methane ...
Alibert, Anderson, Atreya, Barr, Bockelée-Morvan, Bézard, Charlou, Cordier, Craig, Daniel Cordier, Fortes, Giardini, Grasset, Horner, J. Hunter Waite, Jonathan I. Lunine, Kathleen E. Mandt, Krasnopolsky, Lin, Lunine, Lécuyer, Lécuyer, Mai-Julie Nguyen, Matson, Matthew Pasek, McCollom, Mitri, Moody, Mousis, Mousis, Olivier Mousis, Oze, Pinto, Sakai, Sherwood Lollar, Sherwood Lollar, Tobie, Vennemann, Vuitton, Waite, Wenner, William S. Lewis   +41 more
core   +4 more sources

Density of Sodium Aluminosilicate Melts Along the NaAlSiO4‐NaAlSi3O8 Join at High Pressure: In‐Situ Measurements and Re‐Calibration of a Modified Hard‐Sphere Equation of State For Silicate Melts

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 2, February 2026.
Abstract Silicate melts play a crucial role in planetary differentiation. The density contrast between silicate melts and the surrounding solid residue exerts a primary control on many magmatic processes. However, direct measurements of the density of silicate melts at high pressure (P) and temperature (T) conditions remain challenging, particularly ...
Man Xu, Zhicheng Jing, James A. Van Orman, Qingyang Hu, Qi Chen, Tony Yu, Yanbin Wang   +6 more
wiley   +1 more source

Petrology and geochemistray of Imam-Zadeh Hashem mafic and ultramafic bodies, southern Guilan province

Journal of Economic Geology, 2013
Mafic and ultramafic plutonic igneous bodies, with small and big outcrops, between Shemshak rock units (Jurassic) are observed in east of Imam Zadeh Hashem, in southern Guilan province.
Mojgan Salavati, Reza Fahim Guilani
doaj  

Correction to: Quantifying the effects of hydrogen on carbon assimilation in a seafloor microbial community associated with ultramafic rocks. [PDF]

ISME J, 2022
Coskun ÖK, Vuillemin A, Schubotz F, Klein F, Sichel SE, Eisenreich W, Orsi WD.   +6 more
europepmc   +1 more source

Evolution and Provenance of the Polish Rotliegend in the Southern Permian Basin

Journal of Geophysical Research: Earth Surface, Volume 131, Issue 2, February 2026.
Abstract The Southern Permian Basin (SPB) has been extensively explored for ore deposits. However, a comprehensive evaluation of the remaining copper potential, specifically for sediment‐hosted stratiform copper system, remains lacking. This study applies goSPL, an open‐source landscape and stratigraphic evolution model, to reconstruct the Permian rift‐
Beatriz Hadler Boggiani, Claire Mallard, Tristan Salles, Nicholas Atwood   +3 more
wiley   +1 more source

Quantifying the effects of hydrogen on carbon assimilation in a seafloor microbial community associated with ultramafic rocks. [PDF]

ISME J, 2022
Coskun ÖK, Vuillemin A, Schubotz F, Klein F, Sichel SE, Eisenreich W, Orsi WD.   +6 more
europepmc   +1 more source

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

Ophiolite-Related Ultramafic Rocks (Serpentinites) in the Caribbean Region: A Review of their Occurrence, Composition, Origin, Emplacement and Ni-Laterite Soil Formation

Geologica Acta, 2006
Ultramafic rocks, mainly serpentinized peridotites of mantle origin, are mostly associated with the ophiolites of Mesozoic age that occur in belts along three of the margins of the Caribbean plate. The most extensive exposures are in Cuba. The ultramafic-
J.F. LEWIS, G. DRAPER, J.A. PROENZA FERNÁNDEZ, J. ESPAILLAT, J. JIMÉNEZ   +4 more
doaj   +1 more source

Compressional wave velocity measurements on mafic-ultramafic rocks under high aqueous fluid pressure and temperature help to explain low-velocity zones in the lithosphere. [PDF]

Sci Rep, 2021
Lebedev EB, Kern H, Pavlenkova NI, Lukanin OA, Lobanov KV, Zharikov AV, Popp T.   +6 more
europepmc   +1 more source