Results 91 to 100 of about 2,655 (203)

Alteration of a Mantle‐Derived Dunite Boulder in Jezero Crater, Mars

Geophysical Research Letters, Volume 53, Issue 13, 16 July 2026.
Abstract In 2023, the Mars 2020 Perseverance rover explored the youngest preserved deposits on the Western fan of Jezero crater, Mars: a field of meter‐scale boulders dispersed above the previously explored sandstone and siltstone units. Reflectance spectra of the boulders delineated two classes, one olivine‐bearing and one pyroxene‐bearing.
E. L. Moreland, M. Bramble, K. L. Siebach, A. C. Pascuzzo, M. Morris, S. J. VanBommel, M. Jones, S. Siljeström, A. Srivastava, A. H. Treiman, J. Hurowitz   +10 more
wiley   +1 more source

Petrology of the 1952 Eruption and Ancient Lava and Pyroclastic Flows of Krenitsyn Peak Volcano, Onekotan Island, Kuril Arc, Russia

Geosciences
Krenitsyn Peak is one of the two active volcanoes on Onekotan Island (Greater Kuril Ridge). The inaccessibility of the island, along with the volcano being situated within a sizeable (7 km in diameter) and cold (3.7 °C) caldera lake, has led to minimal ...
Vesta O. Davydova, Anton A. Nuzhdaev, Ilya E. Bolshakov, Ruslan A. Kuznetsov, Andrey B. Ermolinskiy, Elena S. Zhitova, Vasiliy O. Yapaskurt   +6 more
doaj   +1 more source

Experimental Proof to Natural Hydrogen Generated Through Serpentinization of Olivine at Room Temperature and Ambient Pressure With Mechanochemistry

ChemSusChem, Volume 19, Issue 13, 14 July 2026.
This work shows experimentally the possibility of serpentinization (main mechanism of natural hydrogen) at room temperature and ambient pressure, which may provide the rapidly growing hydrogen economy with inspirations to explore new natural hydrogen deposits and new methods for hydrogen production. Natural hydrogen, or “white hydrogen,” is a promising
Jikai Ye, Derya Demirbas, Michael Felderhoff   +2 more
wiley   +1 more source

Infrared absorption spectra of Na-pyroxenes and Ca-pyroxenes

Journal of the Mineralogical Society of Japan, 1968
Ohashi, Haruo, Yagi, Kenzo
openaire   +2 more sources

Amphibole reaction rims record shear during magma ascent. [PDF]

Nat Commun
Wallace PA, Birnbaum J, De Angelis SH, Mariani E, Larsen J, Kendrick JE, Christopher TE, Cole PD, Lamur A, Lavallée Y.   +9 more
europepmc   +1 more source

Phase-specific nanoscale mechanics of anhydrous astromaterials and implications for larger-scale strength. [PDF]

npj Space Explor
Davis TP, Garvie LAJ, Hoover CG.
europepmc   +1 more source

Feldspar reduces fault frictional healing rate under hydrothermal conditions. [PDF]

Nat Commun
Feng W, Wang W, Yao L, Gomila R, Ma S, Li Q, Di Toro G.   +6 more
europepmc   +1 more source

Petrography and physical-mechanical evaluation of mafic-ultramafic rocks from Atud-Um Khasila, Egypt for dimension stone. [PDF]

Sci Rep
Abdel-Rahman AM, Latif MLA, Khedr MZ, Mohsen SA, Ghoneim MH.   +4 more
europepmc   +1 more source

Surface Reaction of CO₂ with Basaltic Minerals as a Mechanism for Carbon Mineralization. [PDF]

Environ Sci Technol
Shao Z, Jia J, Liang Y, Cui W, Jo G, Usui K, Taniguchi T, Tsuji T.   +7 more
europepmc   +1 more source

Coexisting Pyroxenes [PDF]

Geological Magazine, 1969
openaire   +1 more source