The rare gas isotopic compositions of residual harzburgite xenoliths from Savai'i (SAV locality) and an unnamed seamount south of the Samoan chain (PPT locality) provide important constraints on the rare gas evolution of the mantle and atmosphere. Despite heterogeneous trace element compositions, the rare gas characteristics of the xenoliths from each of the two localities are strikingly similar. SAV and PPT xenoliths have ^3He/^4He ratios of 11.1 ± 0.5 R_A and 21.6 ± 1 R_A, respectively; this range is comparable to the ^3He/^4He ratios in Samoan lavas and clearly demonstrates that they have trapped gases from a relatively undegassed reservoir. The neon results are not consistent with mixing between MORB and a plume source with an atmospher...
We have measured He, Sr, Nd, and Pb isotope ratios and Rb, Sr, Sm, and Nd concentrations in stratigr...
New experimental data on the isotopic variations of neon, argon, and xenon in a popping rock imply t...
Intra-plate basalt isotopic trends require mixing between enriched mantle components (EM1, EM2, HIMU...
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...
New noble gas measurements have been made on Samoan ultramafic xenoliths in order to characterize t...
New noble gas measurements have been made on Samoan ultramafic xenoliths in order to characterize t...
Harzburgite xenoliths from the Samoan hotspot carry extraordinarily enriched Sr-Nd-Pb isotopic ratio...
Noble gases trapped in fluid inclusions in residual mantle xenoliths from Samoa have a wide range in...
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...
26 OIB 27 mantle 28We report the first neon isotope measurements on phenocrysts from subaerial and s...
Andesites erupted from Tongariro volcano, North Island, New Zealand contain feldspathic and quartzos...
Andesites erupted from Tongariro volcano, North Island, New Zealand contain feldspathic and quartzos...
International audienceThe Samoan islands are the type locality for the Enriched Mantle (II) reservoi...
We have measured He, Sr, Nd, and Pb isotope ratios and Rb, Sr, Sm, and Nd concentrations in stratigr...
New experimental data on the isotopic variations of neon, argon, and xenon in a popping rock imply t...
Intra-plate basalt isotopic trends require mixing between enriched mantle components (EM1, EM2, HIMU...
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...
New noble gas measurements have been made on Samoan ultramafic xenoliths in order to characterize t...
New noble gas measurements have been made on Samoan ultramafic xenoliths in order to characterize t...
Harzburgite xenoliths from the Samoan hotspot carry extraordinarily enriched Sr-Nd-Pb isotopic ratio...
Noble gases trapped in fluid inclusions in residual mantle xenoliths from Samoa have a wide range in...
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...
26 OIB 27 mantle 28We report the first neon isotope measurements on phenocrysts from subaerial and s...
Andesites erupted from Tongariro volcano, North Island, New Zealand contain feldspathic and quartzos...
Andesites erupted from Tongariro volcano, North Island, New Zealand contain feldspathic and quartzos...
International audienceThe Samoan islands are the type locality for the Enriched Mantle (II) reservoi...
We have measured He, Sr, Nd, and Pb isotope ratios and Rb, Sr, Sm, and Nd concentrations in stratigr...
New experimental data on the isotopic variations of neon, argon, and xenon in a popping rock imply t...
Intra-plate basalt isotopic trends require mixing between enriched mantle components (EM1, EM2, HIMU...