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Oxygen cycle on early Earth may be more dynamic than thought
Zee News
Biogeochemists at the University of California, Riverside has provided a new view on the relationship between the earliest accumulation of oxygen in the atmosphere, arguably the most important biological event in Earth history, and its relationship to the sulfur cycle.
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Marilyn Fogel named 2013 Treibs Medalist
Marilyn Fogel, Professor in the School of Natural Sciences at the University of California – Merced, has been selected as the recipient of the 2013 Alfred Treibs Award. Fogel was nominated for her numerous seminal contributions to the fields of organic geochemistry, biogeochemistry, ecological processes, meteoritics and the archaeological sciences. The Treibs Award recognizes major achievements, over a period of years, in organic geochemistry. The award is expected to be presented at the IMOG2013 in Tenerife, Canary Islands (Spain) this September.
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ISM Program reaches 52 students from 13 countries
Since starting the Introductory Student Membership Program two months ago, the program has provided free 2-year student memberships to 52 new GS student members from Argentina, Bangladesh, Bolivia, Brazil, Chile, India, Iran, Kenya, Morocco, Pakistan, Moldova, Sri Lanka and Venezuela. The program is supported by generous donations from members along with a contribution from the GS. If you would like to donate to the program please login to your member account and click 'donate'. There are still funds remaining – please encourage qualified students to apply.
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Geochemical Career Center
All jobs posted in the Geochemical Career Center are cross-promoted through our Facebook page and right here in Geochemical News.

New! Postdoctoral Research Associate - Geochemistry & Interfacial Sciences (Oak Ridge National Laboratory, Oak Ridge, TN, USA)

Associate professor in metamorphic petrology/ structural geology (Aarhus University, Aarhus, Denmark)

Maersk Oil Chair in Applied Geophysics (Aarhus University, Aarhus, Denmark)

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New in GCA (v.109, 15 May 2013)
Contemporaneous formation of chondrules in distinct oxygen isotope reservoirs

Thermodynamic analysis of Bacillus subtilis endospore protonation using isothermal titration calorimetry

Oxygen isotope partitioning between immiscible silicate melts with H2O, P and S

Calibrating the glycerol dialkyl glycerol tetraether temperature signal in speleothems

Organic carbon export from the Greenland ice sheet

Re and Os isotopes of the central Oregon Cascades and along the arc indicate variable homogenization and mafic growth in the deep crust

Behavior of Ni, Zn and Cr during low temperature aqueous Fe oxidation processes on Mars

The silicon isotope composition of the upper continental crust

Porosity and surface area evolution during weathering of two igneous rocks

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GRC: Interior of the Earth
May 5 is the application deadline for the 2013 Gordon Research Conference: Interior of the Earth. This unique multi-disciplinary conference will take place from June 2 to June 7, 2013, at Mt Holyoke College in western Massachusetts (USA). It is preceded on June 1-2 by the Gordon Research Seminar, reserved for junior researchers and graduate students. The attendance quota has been increased and there are a few slots left. This GRC is a recipient of a Geochemical Society MAP grant.
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Ancient Earth crust stored in deep mantle
Scientists have long believed that lava erupted from certain oceanic volcanoes contains materials from the early Earth's crust. But decisive evidence for this phenomenon has proven elusive. New research from a team including Carnegie's Erik Hauri demonstrates that oceanic volcanic rocks contain samples of recycled crust dating back to the Archean era 2.5 billion years ago.
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Looking for similar articles? Search here, keyword EARTH'S CRUST.

Fossil shells, new geochemical technique provide clues to ancient climate cooling
R&D Magazine
Using a new laboratory technique to analyze fossil snail shells, scientists have gained insights into an abrupt climate shift that transformed the planet nearly 34 million years ago. At that time, the Earth switched from a warm and high-carbon dioxide "greenhouse" state to the lower-carbon dioxide, variable climate of the modern "icehouse" world.
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Missed last week's issue? See which articles your colleagues read most.

    Probing secrets of Earth's plates (The New Zealand Herald)
Where does charcoal, or black carbon, in soils go? (National Science Foundation)
New technique could yield gold from crop plants (Counsel & Heal)
Analyzing ash flows from volcanic explosions (Physics World))

Don't be left behind. Click here to see what else you missed.


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