Results 121 to 130 of about 13,826 (203)
Impact-induced mixing generated the stratified soils of the Lunar South Pole Aitken Basin
Communications Earth & EnvironmentThe Mg-pyroxene annulus in the South Pole–Aitken (SPA) basin holds crucial information about the lunar crustal evolution, yet its mineralogy and origin remain debate. Here we analyzed the mineralogy, exogenic ejecta, and soil evolution of the 2.8-billion-
Haijun Cao +10 more
doaj +1 more source
INTERRELATIONS BETWEEN MINERAL BODIES IN FENITE HALO OF THE WESTERN CONTACT OF THE ILMENOGORSKY MIASKITE COMPLEX [PDF]
Минералогия, 2017 The northwestern contact of the Ilmenogorsky miaskite complex exhibits a succession of rocks from early banded meso- and melanocratic syenites to granosyenites and granites and further complex series of leucocratic syenites, carbonatites, syenitic and ...
V.A. Popov, V.A. Muftakhov
doaj
Flip‐Flop Detachments Require Moderate Strength Contrasts Between Fault Zone and Fault Blocks
Geochemistry, Geophysics, Geosystems, Volume 27, Issue 10, October 2026.Abstract Large‐offset detachment faults frequently occur at slow‐ and ultraslow‐spreading mid‐ocean ridges, especially where magma supply is limited. Observations show that detachments at ultraslow ridges often alternate in polarity (“flip‐flop” regime), but the mechanical controls governing their formation remain poorly understood.
A. Demont, J.‐A. Olive, M. Cannat
wiley +1 more source
Geochemistry, Geophysics, Geosystems, Volume 27, Issue 10, October 2026.Abstract Distributed basaltic volcanic fields commonly host minor but significant silicic magmas, the origin of which remains debated. At Harrat Khaybar (western Saudi Arabia; ca. 1.7 Ma to present), volcanic activity erupted compositions range from alkali olivine basalt to trachyte and comendite.
Abdullah Alohali +5 more
wiley +1 more source
Geochemistry, Geophysics, Geosystems, Volume 27, Issue 10, October 2026.Abstract The nature of mantle sections exhumed at magma‐poor rifted margins remains poorly constrained, largely because direct sampling of mantle in modern passive margins is exceptionally rare. The Iberia–Newfoundland system is unique in providing drilled mantle rocks on both conjugate margins, offering an unprecedented glimpse into mantle ...
A. Secchiari, M. Godard, A. Montanini
wiley +1 more source
Geochemistry, Geophysics, Geosystems, Volume 27, Issue 10, October 2026.Abstract Ophiolitic mélanges and associated intrusions provide key archives for reconstructing the evolution of ancient ocean basins and subduction‐related mantle modification. The Hongliuhe–Niujuanzi–Xichangjing ophiolitic mélange in the central Beishan Orogen preserves important records of the Paleo‐Asian Ocean, but the timing of oceanic subduction ...
Yujia Song +4 more
wiley +1 more source
The iron isotope composition of pyroxene from the Skaergaard layered mafic intrusion, East Greenland
, 2023 Iron isotopes show small fractionations in igneous rocks emplaced at high temperature, but the processes by which these fractionations originate are still debated.
NC DOCKS at East Carolina University +1 more
core
Reaction‐Driven Crack Propagation Controlled by Vein Extension in a Dilute Fracture System
Journal of Geophysical Research: Solid Earth, Volume 131, Issue 10, October 2026.Abstract Permanent mineral trapping of CO2 ${\text{CO}}_{2}$ in ultramafic rocks can be accelerated if carbonate precipitation wedges open microcracks and sustains crack growth, thereby increasing permeability and reactive surface area. We develop a vein‐extension controlled model for carbonation reaction‐driven cracking in a dilute fracture system ...
Rui Feng, John Rudnicki
wiley +1 more source
BaSIC: A Bayesian Inversion Model for Basalt Source Investigation and Characterization
Journal of Geophysical Research: Solid Earth, Volume 131, Issue 10, October 2026.Abstract We present BaSIC: Basalt Source Investigation and Characterization, an open‐source Python based Bayesian inversion method to constrain the source mineralogy of basalts. Using bulk rock geochemistry, the model takes the averages and standard deviations of six elemental ratios (Mn/Fe, Zn/Fe, Mn/Zn, Sc/Zn, Co/Fe, and Ga/Sc) for a given basalt ...
E. H. Cunningham +2 more
wiley +1 more source
GeosciencesKrenitsyn 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 +6 more
doaj +1 more source