Introduction: Throughout the history of Mars, aqueous solutions should have existed at some depths below the surface. On early Mars, high geothermal gradients and intensive volcanic activity would have favored near-surface existence of aqueous solutions and sapping of ground water (e.g., [1]). During later epochs, solutions could have been stable deep below the surface, usually below ice-bearin...

Boron isotope compositions were measured in kornerupine and tourmaline from lenses consisting primarily of kornerupine, plagioclase corundum. The occur within hornblende-gneiss or along the boundary between this gneiss an amphibolite lens at Akarui Point Lützow-Holm Complex, Prince Olav Coast, East Antarctica. peak metamorphic conditions have been estimated to be ~ 800-900 oC 8-11 kbar. δ11B wh...

This study provides a survey on potential Cr(VI) exposure attributed to drinking water in Greece. For this reason, a wide sampling and chemical analysis of tap waters from around 600 sites, supplied by groundwater resources, was conducted focusing on areas in which the geological substrate is predominated by ultramafic minerals. Results indicate that although violations of the current chromium ...

A comprehensive study of a 340 m thick lenticular-sheet body ultramafic composition penetrated by structural well M-1 at depth about 2.2 km was accomplished. Its main volume is composed plagioharzburgite; fine-grained rocks norite and orthopyroxenite chilling zones are preserved on endocontacts. The the similar in to near underlying ore-bearing layered intrusion – Monchepluton. age 2510 ± 9 Ma ...

introduction worldwide, ni-cu and pge magmatic sulfide deposits are confined to the lower parts of stratiform mafic and ultramafic complexes. however, ophiolite mafic and ultramafic complexes have been rarely explored for sulfide deposits despite the fact that they have been extensively explored and exploited for chromite. sulfide saturation during magmatic evolution is necessary for sulfide mi...