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Curiosity Rover finds biologically useful nitrogen on Mars
A team using the Sample Analysis at Mars (SAM) instrument suite aboard NASA's Curiosity rover has made the first detection of nitrogen on the surface of Mars from release during heating of Martian sediments. The nitrogen was detected in the form of nitric oxide, and could be released from the breakdown of nitrates during heating. Nitrates are a class of molecules that contain nitrogen in a form that can be used by living organisms. The discovery adds to the evidence that ancient Mars was habitable for life.
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Business office to relocate to Carnegie
Last June, the Geochemical Society and Washington University in St. Louis (WashU) decided to not renew their agreement to house the GS business office in the Earth and Planetary Sciences Department (the current contract concludes on June 30, 2015). And, as GS Chief Operating Officer Seth Davis indicated in last month's Elements, he will be stepping down as COO after 15 years of service to the Geochemical Society. We thank WashU, Seth, and his assistant, Kathryn Hall, for their years of support, service, and for jobs well done. Moving forward, a task force has been able to secure a new location for the business office at the Carnegie Institution of Washington (Washington, D.C.). Carnegie has long been an champion of the Geochemical Society and we are grateful for their commitment to our organization. The search for a new Chief Operating Officer is also well under way and we are expecting a smooth transition in the coming months.
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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 us at Goldschmidt Aug 16 – 21/15 in Prague.

New in GCA (v.153, 15 March 2015)
Ce(III) and Ce(IV) (re)distribution and fractionation in a laterite profile from Madagascar: Insights from in situ XANES spectroscopy at the Ce LIII-edge

Temporal and spatial variations in provenance of Eastern Mediterranean Sea sediments: Implications for Aegean and Aeolian arc volcanism

Characterization of the chemical composition of soil humic acids using Fourier transform ion cyclotron resonance mass spectrometry

Evidence for an early nitrogen isotopic evolution in the solar nebula from volatile analyses of a CAI from the CV3 chondrite NWA 8616

Uranium isotope fractionation in Saanich Inlet: A modern analog study of a paleoredox tracer

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Geochemical Career Center expands
The Geochemical Career Center has expanded its listings to include affiliate job listings. This is a great benefit for job seekers as you will find the center with many more job opportunities than previously offered. GS will still continue to feature jobs posted made through the Geochemical Society here in Geochemical News.

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

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 G-Cubed (v.16, issue 2)
Time scales of intra-oceanic arc magmatism from combined U-Th and (U-Th)/He zircon geochronology of Dominica, Lesser Antilles

Intraplate volcanism at the edges of the Colorado Plateau sustained by a combination of triggered edge-driven convection and shear-driven upwelling

New geophysical constraints on a failed subduction initiation: The structure and potential evolution of the Gagua Ridge and Huatung Basin

Slip-rate-dependent melt extraction at oceanic transform faults

Submarine record of volcanic island construction and collapse in the Lesser Antilles arc: First scientific drilling of submarine volcanic island landslides by IODP Expedition 340

Generic along-strike segmentation of Afar normal faults, East Africa: Implications on fault growth and stress heterogeneity on seismogenic fault planes

Along-axis variation in crustal thickness at the ultraslow spreading Southwest Indian Ridge (50°E) from a wide-angle seismic experiment

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Gulf Stream slower than ever before
The Gulf Stream is the weakest it's been in the last 1,000 years. And as glacier melt in the Arctic continues to accelerate, the foot of the Atlantic's most powerful ocean current keeps pressing harder and harder on the brake pedal.
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Possible existence of neutral atomic hydrogen in rock in Earth's deep interior
National Institute for Materials Science via ScienceDaily
A new finding challenges the established dogma that hydrogen exists in the form of a hydroxyl group in silicate minerals that make up rocks, and is expected to open up new possibilities for identifying the mechanism behind the hydrogen cycle in the Earth's deep interior.
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Missed last week's issue? See which articles your colleagues read most.

    Computer sims: In climatic tug of war, carbon released from thawing permafrost wins handily (Lawrence Berkeley National Laboratory via ScienceDaily)
New Mercury surface composition maps illuminate the planet's history (Carnegie Institution via ScienceDaily)

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