Description:
Concentrations of H₂O, F, Cl, C, P, and S have been measured by secondary ion mass spectrometry (SIMS) in experimentally produced peridotite phases (including clinopyroxene, orthopyroxene, olivine, ga
... More
Description:
Mantle-derived melts and metasomatic fluids are considered to be important in the transport and distribution of trace elements in the subcontinental lithospheric mantle. However, the mechanisms that f
... More
Description:
A number of currently popular models for the genesis of evolved arc-magmas (from basaltic andesite to dacite) invoke repeated intrusion, partial-melting and differentiation at the base of the crust. H
... More
Description:
Both silicate melts and aqueous fluids are thought to play critical roles in the chemical differentiation of the Earth's crust and mantle. Yet their relative effects are poorly constrained. We have ad
... More
Description:
Subduction-related Quaternary volcanic rocks from Solander and Little Solander Islands (46°34'S, 166°53'E), south of mainland New Zealand, are amphibole- and plagioclase-phyric trachyandesites-andesit
... More
Description:
The investigation focus is to determine in the primitive Southern Kermadec basalt, (SiO2 = 49.64%, Mg1.2, MgO = 9.10wt%, normative olivine = 14.58%) the stable mineral assemblage at pressures of 0.5-1
... More
Description:
To investigate formation of the Earth's earliest continental crust, partial-melting experiments were conducted (at 900-1100 °C and 0.5-3.0GPa) on two greenstones from the 4.3 Ga Nuvvuagittuq complex o
... More
Description:
Partial-melting experiments, at 1.0-3.0 GPa and 900-1100 degrees C, were conducted on two greenstones of Early Archaean (Hadean) age from the Nuvvuagittuq Complex of northern Quebec. For comparison, s
... More
Description:
Oligocene volcanics from Oatlands in Tasmania, Australia, include olivine tholeiites, alkali olivine basalts, nepheline basanites and olivine nephelinites. They have compositional characteristics that
... More
Description:
Amphiboles were crystallized in sub-liquidus experiments at 0.5-2.0 GPa and 1000-1050 °C from hydrous nepheline basanite and olivine basalt starting compositions. The amphiboles and coexisting (quench
... More
Description:
Thirty five minor and trace elements (Li, Be, B, Sc, Cu, Zn, Ga, Ge, As, Rb, Nb, Mo, Ag, Cd, In, Sn, Sb, Cs, Ba, La, Ce, Nd, Sm, Tb, Ho, Tm, Lu, Hf, Ta, W, Tl, Pb, Bi, Th and U) in experimentally prod
... More