The Kap Edvard Holm Layered Series forms part of the East Greenland Tertiary Province, and was emplaced at shallow crustal level (at depths corresponding to a pressure of 1-2 kbar) during continental break-up. It consists of two suites: a gabbro suite comprising olivine and oxide gabbros, leucocratic olivine gabbros and anorthosites, and a suite of wehrlites that formed from the intrusion of th...

Abstract Peridotite xenoliths of wehrlite composition, scarcely known in Adamawa plateau, Cameroon, were sampled by Mio-Pliocene basanites from Hosséré Do Guessa volcano. Their origins are discussed and elucidated trough petrography mineral chemistry. Studied wehrlites exhibit poikilitic or protogranular textures composed four main mantle phases (high Mg-olivine, augite, enstatite Al-spinel). P...

Cr-spinel [(Mg, Fe2+)(Cr, Al, Fe3+)2O4)] is a common mineral in the ultramafic core of Duke Island complex southeastern Alaska, US. grains with an unmixed texture have been observed dunite and wehrlite complex. Inhomogeneous ratio Cr/(Al + Cr Fe3+) <0.37 prominent dunite. The inhomogeneous consists two completely different compositions: Al-rich Cr-spinel, Fe3+-rich wide range content (from 1...

This study provides the first micro-thermometric data of fluid inclusions (FIs) in mafic loose (disaggregated) xenocrysts and ultramafic xenoliths explosive products melilitite-carbonatite Mt. Vulture volcano (southern Italy). Pure CO2 late stage FIs hosted rock-forming minerals wehrlite clinopyroxene were trapped at local crust-mantle boundary (32 km). In contrast, trapping pressures within ol...

Mantle xenoliths in a nephelinite the Little Lottery River provide insight into Miocene mantle adjacent to Australia-Pacific plate boundary N Canterbury. The comprise peridotite and pyroxenite extracted from depths of ∼ 40 60 km. olivine Mg# < 89, lack spinel occurrence ilmenite, elevated bulk Cr Al, light rare Earth element (REE)-enriched clinopyroxene, 87Sr/86Sr15 Ma clinopyroxene populations...