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Study resolves controversy over nitrogen's ocean 'exit strategies'
Astrobiology Magazine
A decades-long debate over how nitrogen is removed from the ocean may now be settled by new findings from researchers at Princeton University and their collaborators at the University of Washington. The debate centers on how nitrogen becomes converted to a form that can exit the ocean and return to the atmosphere where it is reused in the global nitrogen cycle.
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Carla Koretsky to receive Distinguished Service Award
The Geochemical Society is please to announce that Dr. Carla Koretsky, Dean of the Lee Honors College and Professor of Geosciences, Western Michigan University will be awarded the Geochemical Society's Distinguished Service Award. The award recognizes and documents outstanding service to the Geochemical Society and/or the geochemical community that greatly exceeds the normal expectations of voluntary service to the Society. Dr. Koretsky is being recognized for her long-running contributions both as co-editor of Geochemical News from 2001-2008 and for her service to the Goldschmidt Student Travel Grant program. The award will be presented at the Goldschmidt2014 conference.
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Elements 10n2: Ophiolites
The April issue of Elements magazine (volume 10, issue 2) is in press. "This issue of Elements is dedicated to ophiolites... How do these rocks form and where do we find them? What tectonic secrets do they reveal? Much has been learned since the first Penrose definition of an ophiolite. Multiple tectonic settings are now recognized and are summarized in this issue, and a geochemical basis is presented for their identification. The classic localities of Oman and the Izu-Bonin-Mariana arc are described in detail. This issue also reports on the discovery of diamonds and an amazing array of reduced and exotic minerals in chromitites from several ophiolites. The alteration of basaltic glass in ophiolites may even lead to the recognition of primitive life-forms on the seafloor of the early Earth. The study of ophiolites and their mineralogy, petrology, and geochemistry, has never been more fascinating or relevant to mankind." Excerpt from John Valley's editorial Playthings versus the Killer Rock?

Current Geochemical Society members can access this issue now via the Elements online archive using your email address (UserID) and member number (Password).

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Elements: Bernard Wood to be next principal editor
Dr. Bernard (Bernie) Wood (University of Oxford) has accepted the invitation to join the Elements editorial team, starting in January 2015, and will attend the editorial meeting at Goldschmidt2014. He will replace John Valley (University of Wisconsin-Madison) whose term of office ends on 31 December 2014. Bernie will be joining Principal Editors Patricia Dove (Virginia Tech) and Gordon E. Brown, Jr (Stanford University).
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Geochemical Career Center

Postdoctoral Position in Geochemistry Instrumentation (University of Alabama, Tuscaloosa, AL, USA)

Division Director, Division of Earth Sciences (NSF, Arlington, VA, USA)

Final Days! Director, Romberg Tiburon Center for Environmental Studies (San Francisco State University, San Francisco, CA, USA)

Job Seekers: View current openings | Post your resume | Career resources

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New in GCA (v.131, 15 April 2014)
Metal complexation and ion hydration in low density hydrothermal fluids: Ab initio molecular dynamics simulation of Cu(I) and Au(I) in chloride solutions (25–1000 °C, 1–5000 bar)

Appraisal of TEX86 and TEX86L thermometries in subpolar and polar regions

Sulfur concentration of martian basalts at sulfide saturation at high pressures and temperatures – Implications for deep sulfur cycle on Mars

Refractory metal nuggets in different types of cosmic spherules

(U–Th)/He geochronology of goethite and the origin and evolution of cangas

Stabilization of polynuclear plutonium(IV) species by humic acid

[Open access] Efficient chemical equilibrium calculations for geochemical speciation and reactive transport modelling

Rainfall and cave water isotopic relationships in two South-France sites

Relationships between organics, water and early stages of aqueous alteration in the pristine CR3.0 chondrite MET 00426

Evolution of organic matter in Orgueil, Murchison and Renazzo during parent body aqueous alteration: In situ investigations

Solubility of molybdenite in hydrous granitic melts at 800 °C, 100–200 MPa

Highly siderophile elements and 187Re–187Os isotopic systematics of the Allende meteorite: Evidence for primary nebular processes and late-stage alteration

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Valuable Earth and space science research now more accessible to the public
The American Geophysical Union (AGU) and Wiley announced that, starting May 1, all AGU journal content from 1997 to content published 24 months ago will be made freely available. This change will apply to all articles and supplementary materials from journals that are not already open access, as well as AGU's weekly newspaper, Eos. It currently represents more than 80,000 journal articles and issues of Eos. Additional content will continue to become open every month, on a 24-month rolling cycle.
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New solution to missing xenon paradox
Chemistry World
A new answer to where Earth's missing xenon has gone – the planet's atmosphere contains less than 10 percent of the gas anticipated – has been put forward. As the Earth was forming billions of years ago computational models predict that atmospheric xenon could have been locked away as iron and nickel compounds in the planet's core, where it would remain to this day.
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Today's Antarctic region once as hot as California, Florida
Parts of ancient Antarctica were as warm as today's California coast, and polar regions of the southern Pacific Ocean registered 21st-century Florida heat, according to scientists using a new way to measure past temperatures.
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Hydrothermal vents: How productive are the ore factories in the deep sea?
Hydrothermal vents in the deep sea, the so-called 'black smokers,' are fascinating geological formations. They are home to unique ecosystems, but are also potential suppliers of raw materials for the future. They are driven by volcanic 'power plants' in the seafloor. But how exactly do they extract their energy from the volcanic rock?
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Asteroid, meteorite impacts can preserve biodata for millions of years
In two separate studies, geologists have found floral, microbial and organic matter in glass created by ancient asteroid, comet and meteorite impacts. Such glass samples could provide a snapshot of environmental conditions at the time of those impacts and could be a good place to look for signs of ancient life on Mars.
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Missed last week's issue? See which articles your colleagues read most.

    Mars: Meteorites yield clues to Red Planet's early atmosphere (ScienceDaily)
New study outlines 'water world' theory of life's origins (ScienceDaily)

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


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