P
Philip E. Janney
Researcher at University of Cape Town
Publications - 72
Citations - 4359
Philip E. Janney is an academic researcher from University of Cape Town. The author has contributed to research in topics: Mantle (geology) & Meteorite. The author has an hindex of 31, co-authored 68 publications receiving 3872 citations. Previous affiliations of Philip E. Janney include Carnegie Institution for Science & Field Museum of Natural History.
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Petrology and geochemistry of Camiguin Island, southern Philippines: insights to the source of adakites and other lavas in a complex arc setting
TL;DR: Camiguin is a small volcanic island located 12 km north of Mindanao Island in southern Philippines as mentioned in this paper, which is the most likely source of Camiguin and most CMA magmas is the mantle wedge metasomatized by fluids dehydrated from a subducted slab.
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Magnesium isotope heterogeneity of the isotopic standard SRM980 and new reference materials for magnesium-isotope-ratio measurements
Albert Galy,Olga Yoffe,Philip E. Janney,Ross W. Williams,Christophe Cloquet,Olivier Alard,Ludwik Halicz,Meenakshi Wadhwa,Ian D. Hutcheon,Erick C. Ramon,Jean Carignan +10 more
TL;DR: In this article, the authors used multicollector ICP-MS for the precise measurement of variations in the isotopic composition of the isotope standard of magnesium (SRM980) provided by the National Institute of Standards and Technology (Gaithersburg, MD, USA).
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Clues from Fe Isotope Variations on the Origin of Early Archean BIFs from Greenland
Nicolas Dauphas,Mark A. van Zuilen,Meenakshi Wadhwa,Andrew M. Davis,Bernard Marty,Bernard Marty,Philip E. Janney +6 more
TL;DR: The observed enrichments are compatible with the transport, oxidation, and subsequent precipitation of ferrous iron emanating from hydrothermal vents and thus suggest that the original rocks were banded iron formations (BIFs), which support a sedimentary origin for the Akilia banded rocks, which represent one of the oldest known occurrences of water-laid deposits on Earth.
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Magnesium isotope fractionation in silicate melts by chemical and thermal diffusion
TL;DR: In this paper, two types of laboratory experiments were used to quantify magnesium isotopic fractionations associated with chemical and thermal (Soret) diffusion in silicate liquids, and the results showed that the magnesium isotope fractionation as a function of temperature in molten basalt corresponds to 3.6 × 10−2 ǫ/°C/amu.
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The early differentiation history of Mars from 182W-142Nd isotope systematics in the SNC meteorites
TL;DR: In this article, the shergottite-nakhlite-chassignite (martian) meteorites were analyzed and the results of an investigation of W and Nd isotopes in the SNC were reported.