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Geochemical cycling in subduction zones affects the atmosphere and sub-surface environments. Insights from experiments under relevant conditions suggest which sulfur species contribute to the formation of metallic ore deposits below arc volcanoes.
There are three dominant sulfur species present in arc magmatic fluids: HS−, H2S and SO2. HS− controls the mobilization and transport of gold in arc magmatic–hydrothermal systems, according to in situ experiments on arc magmatic fluid analogues.
Sphalerite is a trickster with the ability to incorporate a range of elements. Max Frenzel and Sam Thiele explain how sphalerite’s tricks can be used to explore ore-forming environments.
Microbial activity in marine sediment acts as a barrier that generally prevents methane from escaping. However, a survey from the Baltic Sea suggests that in many locations the microbial population falters and methane can pass through freely.
Cores recovered from below the seafloor provide clues to open questions in Earth science. A looming gap in international ocean drilling requires renewed support and urgent action.
The formation of porphyry copper deposits in regions of thickened continental crust remains enigmatic. Insights from the Laramide Porphyry Province in Arizona suggest a link between shallow-slab subduction and copper mineralization.
Nature Geoscience spoke with Susanne M. Straub, an igneous geochemist at the Lamont Doherty Earth Observatory; Susan Q. Lang, a chemical oceanographer at the Woods Hole Oceanographic Institution; and Yige Zhang, a palaeoceanographer at the Guangzhou Institute of Geochemistry, about science supported by deep ocean drilling and the impact of the recent decommissioning the JOIDES Resolution drilling vessel run by the International Ocean Discovery Program.
Inhibition of anaerobic methane oxidation in organic-rich marine sediments causes widespread methane leakage from the seabed, according to an analysis of sediment cores from the Baltic Sea.
Rhizosphere priming effects are stronger in wetland soils than in upland soils due to the greater variation in the redox condition in the rhizosphere, according to a data analysis of existing observations.
The 2021 flood in the Melamchi Valley of Nepal triggered a cascade of erosional effects that contributed to the substantial downstream impacts, according to an analysis of satellite imagery and digital surface models.
The loss of the Conger–Glenzer ice shelf in 2022 was the culmination of a multidecadal process of disintegration, signalling East Antarctica may not be as stable as we once thought.
Satellite observations reveal that the Conger–Glenzer Ice Shelf collapse in East Antarctica occurred in four stages spanning a period of 25 years, culminating in its rapid disintegration in March 2022.
Diatom skeletons largely remain near the surface of the subpolar Southern Ocean following diatom bloom events, suggesting that they do not play as big a role in the downward flux of organic matter as previously thought, according to data from two expeditions focused on the marine twilight zone.
One type of ocean acidification extreme event, as well as marine heatwaves, can be confidently predicted up to 1 year in advance, according to forecasts stemming from an Earth system model ensemble.
Freshwater being released from the Beaufort Gyre is accumulating in an Arctic Ocean buffer zone before it can reach the North Atlantic, according to an analysis of satellite observation and modelling.
