Enhanced weathering of (ultra)basic silicate rocks such as olivine-rich dunite has been proposed as a large-scale climate engineering approach. When implemented in coastal environments, olivine weathering is expected to increase seawater alkalinity, thus resulting in additional CO2 uptake from the atmosphere. However, the mechanisms of marine olivine weathering and its effect on seawater-carbon...

The corundum is found in the rocks of Berit metaophiolite Eastern Anatolia, near Doğanşehir a province Malatya. Metaophiolitic consist mainly garnet metagabbro, granulite, amphibolite, mylonitic amphibole schist, pyroxenite, orthopyroxenite, harzburgite, serpentinized dunite and diorite units. Corundum occurrences are mostly pyroxenites, amphibolites, peridotites granulites. Their colors change...

The Raobazhai ultramafic complex is located in the north of Dabie Mountains and composed spinel peridotites accompanied by a few lenticular mafic metamorphic rocks. are mostly harzburgite, along with minor dunite lherzolite. This study reports petrological, geochemical, Re-Os isotopic data chromite harzburgites from Raobazhai. major trace whole-rock geochemistry characteristics indicate that ro...

Abstract The rheology of the upper mantle impacts a variety geodynamic processes, including postseismic deformation following great earthquakes and post-glacial rebound. rocks is controlled by olivine, most abundant mineral. mechanical properties olivine at steady state are well constrained. However, physical mechanism underlying transient creep, an evolutionary, hardening phase converging to a...

Introduction: With a diameter of ~1500 km [1,2], Caloris is the largest impact basin on Mercury and one of the largest within the Solar System. Caloris, formed ~3.9 Ga [3], is also the best-preserved large mercurian basin. The basin was first imaged in its entirety by the Mercury Dual Imaging System (MDIS) onboard the MErcury Surface, Space ENvironment, GEochemistry, and Ranging (MESSENGER) spa...