Results 141 to 150 of about 5,147 (236)

Formation of giant carbonatite rare earth deposits controlled by deep-seated magma chambers. [PDF]

open access: yesNat Commun
Xue S   +9 more
europepmc   +1 more source

Cyclic Thermal Shock‐Induced Permeability Enhancement in Tight Lithologies: Microstructural Controls and Elastic‐Wave Monitoring

open access: yesGeophysical Research Letters, Volume 53, Issue 13, 16 July 2026.
Abstract Enhanced geothermal systems rely on increasing permeability and pore surface area in rock. Cyclic thermal shocking can achieve both by inducing thermal cracks through repeated rapid cooling. Laboratory experiments subjected micritic limestone, granodiorite, and trachybasalt to up to 10 thermal shock cycles, while tracking crack evolution ...
M. G. Malenda, T. Vanorio
wiley   +1 more source

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

open access: yesGeophysical 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   +10 more
wiley   +1 more source

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

open access: yesChemSusChem, 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   +2 more
wiley   +1 more source

Impactor relics of CI-like chondrites in Chang'e-6 lunar samples. [PDF]

open access: yesProc Natl Acad Sci U S A
Wang J   +20 more
europepmc   +1 more source

Non-equilibrium condensation of the first Solar System solids. [PDF]

open access: yesNature
Charnoz S   +5 more
europepmc   +1 more source

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