Differential platinum group elements (PGE) re-mobilization at low fS2 in Abdasht and Soghan mafic-ultramafic complexes (Southern Iran)

Mafic - Ultramafic Rock Studies

Chromite and platinum group elements mineralization in the Santa Elena Ultramafic Nappe (Costa Rica): geodynamic implications

Chromitites associated with strongly altered peridotite from six distinct localities in the Santa Elena ultramafic nappe (Costa Rica) have been investigated for the first time. Santa Elena chromitites commonly display a compositional variation from extremely chromiferous (Cr/(Cr+Al)=0.81) to intermediate and aluminous (Cr/(Cr+Al)=0.54). This composition varies along a continuous trend, correspo...

Platinum-group elements (PGE) and rhenium in marine sediments across the Cretaceous– Tertiary boundary: Constraints on Re-PGE transport in the marine environment

The nature of Re–platinum-group element (PGE; Pt, Pd, Ir, Os, Ru) transport in the marine environment was investigated by means of marine sediments at and across the Cretaceous–Tertiary boundary (KTB) at two hemipelagic sites in Europe and two pelagic sites in the North and South Pacific. A traverse across the KTB in the South Pacific pelagic clay core found elevated levels of Re, Pt, Ir, Os, a...

Mobilization of the Platinum Group Elements by Low-temperature Fluids: Implications for Mineralization and the Iridium Controversy

may have been • mantle plume, but, alternatively, it may have been triggered by an asteroidal impact An impact fall-out layer with shocked debris has been reported at the Tr/J boundary in Italy [13]. The s ynchronicity of extrusion and extinction appear established as an event horizon independent of radiometric or fossil stratigraphy. Of course, enthusiasm for impacts does not score points in t...

Geological Carbon Capture & Storage in Mafic and Ultramafic Rocks Geological Carbon Capture and Storage in Mafic and Ultramafic Rocks – Muscat, 2011

1 Geological carbon capture and storage in mafic and ultramafic rocks – Muscat, 2011