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A voyage from the Earth's crust to its mantle and back
ETH Zürich
Uranium isotopes leave a distinct "fingerprint" in the sources of volcanic rocks, making it possible to gauge their age and origin. Geologists have gained a new understanding of how the Earth's crust is recycled back into its interior based on these uranium isotopes.
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Chief Operating Officer, Geochemical Society
The Geochemical Society (GS) has an opening for the position of Chief Operating Officer in their new business office at the Carnegie Institution in Washington, D.C. For more information on the position, please visit Carnegie's website: Applications received by 14 February 2015 will receive full consideration; the position will remain open until filled. GS and Carnegie are equal opportunity employers and encourage nominations of outstanding individuals.
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  Analab Corrosion Resistant Laboratory Appliances

Analab manufacture corrosion resistant laboratory appliances such as acid vapour cleaning stations, hotplates, and sample preparation devices. Our devices can be used with a wide range of acids and bases (HF to NH4OH). We are represented in North America by Isomass Scientific.

Please visit our website for upcoming conferences.

Geochemical Career Center

New! Chief Operating Officer (Geochemical Society via the Carnegie Institution, Washington, DC, USA)

Postdoctoral Fellowships in Applied Geochemistry (MAGNET, Nationwide, Canada)

Postdoctoral Position Available at the Institut de Physique du Globe de Paris (IPGP, Paris, France)

Scripps Institution of Oceanography Postdoctoral Position (UC San Diego, La Jolla, CA, USA)

University Lecturer in Earth Sciences (University of Cambridge, Cambridge, UK)

Postdoctoral Associate (Stony Brook University, Stony Brook, NY, USA)

Tenured or Tenure-Track Faculty: Sustainable Mining Geomicrobiologist (UMD, Duluth, MN, USA)

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Employers: All jobs posted in the Geochemical Career Center are cross-promoted through Facebook, Twitter and right here in Geochemical News.

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  Harry Hess Postdoctoral Research Associate in Geosciences

The Department of Geosciences at Princeton University is accepting applications for a Postdoctoral Research Associate

New in GCA (v.148, 1 January 2015)
Mg/Ca-temperature and seawater-test chemistry relationships in the shallow-dwelling large benthic foraminifera Operculina ammonoides

U(VI) behaviour in hyperalkaline calcite systems

Variability of carbonate diagenesis in equatorial Pacific sediments deduced from radiogenic and stable Sr isotopes

Calcium isotopic evidence for rapid recrystallization of bulk marine carbonates and implications for geochemical proxies

Replacement of olivine by serpentine in the Queen Alexandra Range 93005 carbonaceous chondrite (CM2): Reactant–product compositional relations, and isovolumetric constraints on reaction stoichiometry and elemental mobility during aqueous alteration

Radionuclide desorption kinetics on synthetic Zn/Ni-labeled montmorillonite nanoparticles

Reduction of hexavalent chromium by the thermophilic methanogen Methanothermobacter thermautotrophicus

Discriminating secondary from magmatic water in rhyolitic matrix-glass of volcanic pyroclasts using thermogravimetric analysis

Influence of surface passivation and water content on mineral reactions in unsaturated porous media: Implications for brucite carbonation and CO2 sequestration

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New in G-Cubed (v.15, issue 11)
Segmentation of plate coupling, fate of subduction fluids, and modes of arc magmatism in Cascadia, inferred from magnetotelluric resistivity

Spatial extent and degree of oxygen depletion in the deep proto-North Atlantic basin during Oceanic Anoxic Event 2

Continental breakup and UHP rock exhumation in action: GPS results from the Woodlark Rift, Papua New Guinea

The role of viscoelasticity in subducting plates

Rayleigh wave phase velocities in the Atlantic upper mantle

Imaging of CO2 bubble plumes above an erupting submarine volcano, NW Rota-1, Mariana Arc

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Isotopic memory of atmospheric persistence
McGill University via Phys.Org
Chemical analysis of some of the world's oldest rocks, by an international team led by McGill University researchers, has provided the earliest record yet of Earth's atmosphere. The results show that the air 4 billion years ago was very similar to that more than a billion years later, when the atmosphere — though it likely would have been lethal to oxygen-dependent humans — supported a thriving microbial biosphere that ultimately gave rise to the diversity of life on Earth today.
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New — and worrisome — contaminants emerge from oil and gas wells
The Daily Climate
Two hazardous chemicals never before known as oil and gas industry pollutants — ammonium and iodide — are being released into Pennsylvania and West Virginia waterways from the booming energy operations of the Marcellus shale, a new study in the journal Environmental Science & Technology shows.
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    In Memoriam: Robert Berner (GS)
Geochemical reactions may decrease effectiveness of carbon storage schemes (Cambridge)
Small volcanic eruptions explain warming hiatus (Lawrence Livermore National Laboratory)

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