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Geology is broadly the study of the Earth and other planets, moons, and smaller planetary bodies. Fields of geology range from the initial formation and differentiation of the Earth to modern surface processes, such as erosion and soil formation, and include Earth system history and the evolution of life.
Analysis of mineral inclusions in magmas that crystallized before and after the Great Oxidation Event reveals marked changes in the oxidation state of sulfur — owing to the recycling into the mantle of sediments that had been geochemically altered at the surface by atmospheric events.
The use of two zircon oxybarometers to simultaneously determine fO2 and H2O contents shows that Archaean granitoids were mostly formed from relatively oxidizing and H2O-rich magmas, probably at ancient subduction zones.
The metamorphism of granulite-bearing metamorphic soles may initiate prior to the forearc extension that generated the ophiolites above them, according to garnet Lu-Hf geochronology from the sole of the Xigaze ophiolite, South Tibet
Slip on one of two conjugate thrust faults can influence the Coulomb stress and subsequent slip behaviour on the other, according to field and satellite observations of the Central Range fault and the Longitudinal Valley fault in Eastern Taiwan.
Analysis of mineral inclusions in magmas that crystallized before and after the Great Oxidation Event reveals marked changes in the oxidation state of sulfur — owing to the recycling into the mantle of sediments that had been geochemically altered at the surface by atmospheric events.
An article in Science Advances uses Si and O isotopes of Earth’s oldest rocks to identify the onset of crustal recycling, with potential implications for the onset of subduction-like tectonics.
