New noble gas measurements have been made on Samoan ultramafic xenoliths in order to characterize the composition and nature of entrapment of a postulated mantle metasomatic agent. The new measurements were performed on gases extracted from severely tectonized harzburgites and dunites by both bulk crushing and laser microprobe. The tectonized specimens have the highest noble gas concentrations yet reported from mantle materials and attest to deformation in a highly gas-charged environment. The noble gas isotopic systematics are similar to those observed in undeformed specimens from the same locality, and are consistent with mixing between a mantle component (e.g. ^3He/^4He = 12 R_A, ^(40)Ar/^(36) Ar > 10,000) and an atmospheric cont...
Harzburgite xenoliths from the Samoan hotspot carry extraordinarily enriched Sr-Nd-Pb isotopic ratio...
International audienceNoble gases (He-Ne-Ar-Kr-Xe) in mantle-derived samples allow an undisputable t...
International audienceNoble gases (He-Ne-Ar-Kr-Xe) in mantle-derived samples allow an undisputable t...
New noble gas measurements have been made on Samoan ultramafic xenoliths in order to characterize t...
The elemental and isotopic compositions of five noble gases (He, Ne, Ar, Kr and Xe) have been determ...
Noble gases trapped in fluid inclusions in residual mantle xenoliths from Samoa have a wide range in...
The rare gas isotopic compositions of residual harzburgite xenoliths from Savai'i (SAV locality) and...
The rare gas isotopic compositions of residual harzburgite xenoliths from Savai'i (SAV locality) and...
The rare gas isotopic compositions of residual harzburgite xenoliths from Savai'i (SAV locality) and...
The microdistribution of noble gases in a garnet pyroxenite nodule from Salt Lake Crater (SLC), Oahu...
Mineral separates (olivine (Ol), clinopyroxene (Cp), and orthopyroxene (Op)) of ultramafic xenoliths...
International audienceNoble gases in oceanic basalts always show the presence in variable proportion...
The abundances and isotopic compositions of noble gases in two samples from ultramafic xenoliths in ...
Study of commercially produced volcanic CO2 gas associated with the Colorado Plateau, USA, has revea...
Harzburgite xenoliths from the Samoan hotspot carry extraordinarily enriched Sr-Nd-Pb isotopic ratio...
Harzburgite xenoliths from the Samoan hotspot carry extraordinarily enriched Sr-Nd-Pb isotopic ratio...
International audienceNoble gases (He-Ne-Ar-Kr-Xe) in mantle-derived samples allow an undisputable t...
International audienceNoble gases (He-Ne-Ar-Kr-Xe) in mantle-derived samples allow an undisputable t...
New noble gas measurements have been made on Samoan ultramafic xenoliths in order to characterize t...
The elemental and isotopic compositions of five noble gases (He, Ne, Ar, Kr and Xe) have been determ...
Noble gases trapped in fluid inclusions in residual mantle xenoliths from Samoa have a wide range in...
The rare gas isotopic compositions of residual harzburgite xenoliths from Savai'i (SAV locality) and...
The rare gas isotopic compositions of residual harzburgite xenoliths from Savai'i (SAV locality) and...
The rare gas isotopic compositions of residual harzburgite xenoliths from Savai'i (SAV locality) and...
The microdistribution of noble gases in a garnet pyroxenite nodule from Salt Lake Crater (SLC), Oahu...
Mineral separates (olivine (Ol), clinopyroxene (Cp), and orthopyroxene (Op)) of ultramafic xenoliths...
International audienceNoble gases in oceanic basalts always show the presence in variable proportion...
The abundances and isotopic compositions of noble gases in two samples from ultramafic xenoliths in ...
Study of commercially produced volcanic CO2 gas associated with the Colorado Plateau, USA, has revea...
Harzburgite xenoliths from the Samoan hotspot carry extraordinarily enriched Sr-Nd-Pb isotopic ratio...
Harzburgite xenoliths from the Samoan hotspot carry extraordinarily enriched Sr-Nd-Pb isotopic ratio...
International audienceNoble gases (He-Ne-Ar-Kr-Xe) in mantle-derived samples allow an undisputable t...
International audienceNoble gases (He-Ne-Ar-Kr-Xe) in mantle-derived samples allow an undisputable t...