crustal

Zircons, a mineral nearly as old as Earth itself, is a time keeper, and also provides a chemical window into many geological phenomena, such as oxidation state. By determining the oxidation levels of the magmas that formed these detrital zircons, scientists are able to deduce the onset of crust to mantle recycling, weathering, and the supercontinent cycle. Credit: Science China Press Zircons, a mineral nearly as old as Earth…

by KeAi Communications Co. Binary classification of fractures in the studied boreholes: a shear and effective normal stresses resolved on the hydraulically non-conductive (gray) and conductive (red) fractures. The prediction accuracy of the logistic regression is shown for each class. b Probabilistic density distributions of the slip tendency Ts of hydraulically non-conductive (gray) and conductive (red) fractures. The…

Earth's auroras are a glorious wonder, but our planet isn't the only place in the Solar System where these phenomena can be found.An atmospheric glow, albeit sometimes in invisible wavelengths, has been spotted at every planet except Mercury, and even some moons of Jupiter... and even a comet. But Mars is where it gets interesting. The red planet is famous for its lost global magnetic field, an ingredient that plays a crucial role in the formation of aurora elsewhere.  But that doesn't mean Mars is totally…