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How Mars' atmosphere got so thin: Reports detail Curiosity clues to atmosphere's past
A pair of new papers report measurements of the Martian atmosphere's composition by NASA's Curiosity rover, providing evidence about loss of much of Mars' original atmosphere. Curiosity's Sample Analysis at Mars (SAM) suite of laboratory instruments inside the rover has measured the abundances of different gases and different isotopes in several samples of Martian atmosphere.
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Goldschmidt2013: Online registration closes Friday
Friday (26 July) 23:59 UTC will be the last opportunity to register online for Goldschmidt2013. Be sure to book accommodations, as well as make plans for social events and tours. If there is still time, a Letter of Invitation is also available to assist with funding or visa applications. Online registration for members is 590 Euro for delegates and 395 Euro for students. Please encourage your colleagues and students who plan to attend Goldschmidt2013 and are not members of one of the sponsoring societies (GS, EAG, GSJ) to join first, so that they may qualify for the member rate.
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Goldschmidt2013: Monday's Plenary and Patterson Award
PLENARY. The first Goldschmidt2013 plenary speaker is GS President, Richard Carlson (Carnegie Institution of Washington). His talk on Making Earth will be presented at 1:15 p.m. in Palazzo dei Congressi on Monday, August 26.

PATTERSON. Dr. Joel Blum (University of Michigan) shall be awarded the 2013 C.C. Patterson Medal on Monday at 2:30 p.m. before his talk on Mass Independent Isotope Fractionation of Mercury. Blum's citationist is Dr. Yigal Erel (The Hebrew University of Jerusalem).

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Contribute your geochemical data to the EarthChem Library so that these data can be discovered and reused now and in the future. Published datasets receive a citable DOI, open access, long-term availability, and investigator data compliance support. Find out more at

Geochemical Career Center

New Listing! Associate Isotope Geochemist or Isotop Geochemist (depending on qualifications) (Illinois State Geological Survey, Urbana-Champaign, IL, USA)

New Listing! Research Lab Specialist (electron microscopy, Auger nanoscope, XRD) (University of Michigan, Ann Arbor, MI, USA)

New Listing! Harry S. Truman Fellowship in National Security Science and Engineering (Sandia National Laboratories, Albuquerque, NM, USA)

Microprobe Lab Manager (Ruhr Universitaet Bochum, Bochum, Germany)

Tenure Track Position in Stable Isotope Geochemistry (Temple University, Philadelphia, PA, USA)

Final Days! PhD in Experimental Geochemistry (GNS Science, Taupo, New Zealand)

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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New in GCA (v.116, 1 September 2013)
GCA v.116 is a special issue titled Looking Inside: 3D Structures and Meteorites with issue editors Dominik Hezel, Jon Friedrich and Masayuki Uesugi.

Looking inside: 3D structures of meteorites

Analytical dual-energy microtomography: A new method for obtaining three-dimensional mineral phase images and its application to Hayabusa samples

Three-dimensional observation of carbonaceous chondrites by synchrotron radiation X-ray CT – Quantitative analysis and developments for the future sample return missions

Visualisation and quantification of CV chondrite petrography using micro-tomography

Experimental investigation of the nebular formation of chondrule rims and the formation of chondrite parent bodies

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New in G-Cubed (v.14/6, June 2013)
Obliquity and long eccentricity pacing of the Middle Miocene climate transition

Characteristics of magma-driven hydrothermal systems at oceanic spreading centers

Evidence that low-temperature oceanic hydrothermal systems play an important role in the silicate-carbonate weathering cycle and long-term climate regulation

Effect of CO2 hydrate formation on seismic wave velocities of fine-grained sediments

Seismic properties of the Kohistan oceanic arc root: Insights from laboratory measurements and thermodynamic modeling

Prediction of silicate melt viscosity from electrical conductivity: A model and its geophysical implications

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It's not just the heat, it's the ozone: Hidden heat wave dangers exposed
During heat waves — when ozone production rises — plants' ozone absorption is curtailed, leaving more pollution in the air. This resulted in the loss of an estimated 460 lives in the U.K. in the hot summer of 2006. Vegetation plays a crucial role in reducing air pollution, but new research by the Stockholm Environment Institute (SEI) at the University of York shows that they may not protect us when we need it most: during extreme heat, when ozone formation from traffic fumes, industrial processes and other sources is at its worst.
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Australia like Mars? Study suggests dirt in Outback may mimic red planet's soil
The Huffington Post
The red dirt in central Australia might be a close mimic for the red surface of Mars, suggests research that sheds light on how opals formed in the land Down Under. Geologist Patrice Rey at the University of Sydney in Australia finds precious opal in the red center of Australia may have formed due to conditions much like those seen on the surface of the red planet.
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Submerged volcanoes cast doubt on Antarctic glaciation theory
The Antarctic Circumpolar Current (ACC), an ocean current flowing clockwise around the entire continent, insulates Antarctica from warmer ocean water to the north, helping maintain the ice sheet. For several decades, scientists have surmised that the onset of a complete ACC played a critical role in the initial glaciation of the continent about 34 million years ago. But researchers have found geologic evidence that casts doubt on this theory.
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Climate change brings small rise in air pollution deaths
Climate change has had relatively little effect on death rates resulting from outdoor air pollution, according to an international team of researchers. Each year, human-caused fine particulate matter currently results in 2.1 million deaths while ozone pollution leads to 470,000 premature respiratory deaths, they found.
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Missed last week's issue? See which articles your colleagues read most.

    Earth's core affects length of day (ScienceDaily)
New views on "old" carbon in the Amazon River: Insight from the source of organic carbon eroded from the Peruvian Andes (Geochemistry, Geophysics, Geosystems)
Melting in the Afar helps scientists understand how oceans form (PlanetEarth Online via

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


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