Concept

Compatibility (geochemistry)

Publications associées (17)

The Hadean upper mantle conundrum: Evidence for source depletion and enrichment from Sm-Nd, Re-Os, and Ph isotopic compositions in 3.71 Gy boninite-like metabasalts from the Isua Supracrustal Belt, Greenland

Here we present Sm-Nd, Re-Os, and Pb isotopic data of carefully screened, least altered samples of boninite-like metabasalts from the Isua Supracrustal Belt (ISB, W Greenland)that characterize their mantle source at the time of their formation. The princip ...

2004

Petrology and chemistry of the basaltic shergottite North West Africa 480

Philippe Gillet

North West Africa (NWA) 480 is a new martian meteorite of 28 g found in the Moroccan Sahara in November 2000. It consists mainly of large gray pyroxene crystals (the largest grains are up to 5 mm in length) and plagioclase converted to maskelynite. Excludi ...

2002

Re-Os isotopic evidence for long-lived heterogeneity and equilibration processes in the Earth's upper mantle

Anders Meibom, Reto Frei

The geochemical composition of the Earth's upper mantle(1-3) is thought to reflect 4.5 billion years of melt extraction, as well as the recycling of crustal materials. The fractionation of rhenium and osmium during partial melting in the upper mantle makes ...

2002

Typology of recent groundwaters from different aquifer environments based on geogenic tracer elements

A key problem in environmental science and in engineering geology is the often incomplete understanding of the origin of dissolved components in groundwater. The dissolved contents of trace elements in groundwater are of special importance for groundwater ...

EPFL2001

A simple chondritic model of Mars

Philippe Gillet

SNC meteorites (Shergottites, Nakhlites and Chassigny) define a fractionation line in a delta(17)O/delta(18)O diagram as expected for rocks differentiated from a formerly homogenized parent body, which is intermediate between H ordinary chondrites and EH e ...

1999

Experimental investigation of silicate-carbonate system at high pressure and high temperature

Philippe Gillet

Melting and subsolidus relations in the (Mg,Fe)SiO3-(M,Fe)CO3, (Mg,Fe)(2)SiO4-(Mg,Fe)CO3, and (Mg,Fe)O-(Me,Fe)CO2 systems have been investigated at 14, 15, 16 and 25 GPa, 1973 K and 2173 K, using a 1000 t uniaxial multi anvil split sphere apparatus. The ir ...

1998

Elimination from mechanistic and synthetic viewpoints

A review with 30 refs. Topics include the prerequisites for and limits of concertedness, the effect of ion-incompatible reaction conditions, and the synthetic potential of dehydrogenation and ether cleavage. [on SciFinder (R)] ...

1988

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