EAG News

Goldschmidt2018: Abstract deadline – 30 March

G18_logo_100The abstract deadline for Goldschmidt2018 is fast approaching. Submit your abstract online by 30 March.

Bookings are now open for the extensive pre-conference workshop program and for the several exciting field trips that have been proposed.

For Early Career Scientists, an extensive Early Career Program, as well as special workshops, all at reduced prices, are now open for bookings. Reserve your place soon to be sure not to miss out on these popular events.

Simon Poulton named 2018 Berner Lecturer

Simon Poulton_100x75The GS and EAG are pleased to announce that Prof. Simon Poulton (University of Leeds, UK) will present the 2018 Robert Berner Lecture at the Goldschmidt2018 conference in Boston. Details of the lecture will be available in April.

2018 Geochemical Fellows

The Geochemical Society and European Association of Geochemistry are pleased to announce those receiving the honour of Geochemical Fellow: Jess Adkins; Michael Arthur; Miryam Bar-Matthews; Robert J. Bodnar; Daniel Frost; Jérôme Gaillardet; George Helz; Janet G. Hering; Catherine Jeandel; Craig Manning; William S. Reeburgh; Niels Revsbech; Zachary Sharp; Susan Trumbore; Fu-Yuan Wu.

2018 EAG Medallists


We are proud to announce the 2018 EAG medallists, who will be presented with their awards at Goldschmidt 2018 in Boston.

EAG Latest Publications


commentandreply_100Comment on “Ultra-high pressure and ultra-reduced minerals in ophiolites may form by lightning strikes”
W.L. Griffin, D. Howell, J.M. Gonzalez-Jimenez, Q. Xiong, S.Y. O’Reilly

Ballhaus et al. (2017) use electric-discharge experiments to argue that lightning strikes could produce ultra-high pressure (UHP) and super-reduced (SuR) phases “identical to those found in ‘high-pressure’ ophiolites” and that thus there is “not sufficient evidence to challenge long-established models of ophiolite genesis”, specifically for the UHP processing of Tibetan ophiolites. However, the authors produced no evidence for UHP phases in their experiments. […]

commentandreply_100Reply to Comment on “Ultra-high pressure and ultra-reduced minerals in ophiolites may form by lightning strikes”
C. Ballhaus, R.O.C. Fonseca, A. Bragagni

Griffin et al. (2018) discard our lightning experiments because we did not identify ultra-high pressure (UHP) phases. Our experiments (Ballhaus et al., 2017) provide the first rational explanation of many unusual findings in the so-called UHP ophiolites and hence undermine the foundations on which the resulting speculative geotectonic scenarios are based. […]

GPL1807 abstractDiffusive fractionation of Li isotopes in wet, highly silicic melts
M.E. Holycross, E.B. Watson, F.M. Richter, J. Villeneuve

The discovery of large lithium isotopic gradients in geologic media has motivated recent work examining the kinetic fractionation of Li isotopes in silicate materials. Here, piston-cylinder experiments were used to determine Li diffusivities in rhyolitic melts containing ~6 wt. % H2O at 1 GPa pressure and 790-875 °C. […]

GPL1806_abstractOxygen minimum zones in the early Cambrian ocean
R. Guilbaud, B.J. Slater, S.W. Poulton, T.H.P. Harvey, J.J. Brocks, B.J. Nettersheim, N.J. Butterfield

The relationship between the evolution of early animal communities and oceanic oxygen levels remains unclear. In particular, uncertainty persists in reconstructions of redox conditions during the pivotal early Cambrian (541-510 million years ago, Ma), where conflicting datasets from deeper marine settings suggest either ocean anoxia or fully oxygenated conditions. […]


GeoPersp_v6n2_100Glacier Biogeochemistry
Martin Sharp, Martyn Tranter

This issue of Geochemical Perspectives charts a paradigm shift in glacier geochemistry and hydrochemistry. The beds of glaciers and ice sheets were thought to be abiotic only 20 years ago, but now it is known that a diverse range of microbes colonise these environments, and that microbial processes influence chemical weathering and nutrient cycling in aqueous subglacial environments.

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