Transient creep in olivine controls post-seismic deformation
Geodetic observations reveal that the deformation of the crust and upper mantle after a great earthquake continues for decades (Fig.1). Viscosities of the upper mantle estimated from early post-seismic...
View ArticleHigh-pressure silica mineral in the deep Earth is anhydrous
In the Earth’s subduction zones, water is transported into the deep mantle by nominally anhydrous minerals (NAMs) and water-bearing minerals in oceanic plates that react with seawater. Therefore,...
View ArticleA Garnet-rich Lunar Mantle?
Our present-day Moon has an interior structure containing a central metallic core, overlain by a mantle comprised of minerals such as olivine and pyroxene (e.g. Ol+Px mantle) underneath a shell of...
View ArticleFirst-principles investigations of the polysomatism of antigorite under pressure
Antigorite is a type of serpentine, which is the most abundant hydrated mineral on the Earth. It is widely believed that this mineral is the main carrier of water deep into the Earth in subducting...
View ArticleChlorinated flame retardants affect avian embryonic development
Short-chain chlorinated paraffins (SCCPs) were listed under the category of globally controlled persistent organic pollutants (POPs) by the Stockholm Convention in 2017. However, SCCPs toxicity,...
View ArticleGrain boundaries weaken in planetary interiors
Mantle convection and associated plate tectonics of planets like the Earth are governed by the deformation of mantle rocks. This deformation occurs through the motion of defects in the crystal lattices...
View ArticleAccurately estimating the mass of meso- and microplastic particles
Plastic particles, which are known as “transport vectors” of toxic chemicals, have leaked from land to the ocean. In particular, mesoscale (5-25 mm) and microscale (<5 mm) plastic (MMP) particles...
View ArticleWater delivered to the mantle by aluminum enriched hydrated slabs?
Dense Hydrous Magnesium Silicates (DHMSs) are generally considered as primary water carriers from the shallow lithosphere to the deep mantle transition region (MTR; 410–660 km in depth). Among DHMSs,...
View ArticleGlobal Anthropogenic Fingerprints Suggest the Anthropocene Began in the 1950s
Based on stratigraphic records, there have been attempts to identify when the first fundamental changes brought about by humans appeared in the Earth system, but researchers have been divided on the...
View ArticleSeismic anisotropy in the deep mantle could partly be derived from the...
Shear waves split into fast and slow waves when they travel through elastically anisotropic media, and the anisotropy of the seismic velocity is recorded by seismic stations. In the Earth’s deep...
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