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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


Martian rock from Sahara desert unlike others
The Associated Press via Google News    Share    Share on FacebookTwitterShare on LinkedinE-mail article
Scientists are abuzz about a coal-colored rock from Mars that landed in the Sahara desert: A yearlong analysis revealed it's quite different from other Martian meteorites. Not only is it older than most, it also contains more water, tests showed. The baseball-size meteorite, estimated to be 2 billion years old, is strikingly similar to the volcanic rocks examined on the Martian surface by the NASA rovers Spirit and Opportunity, which found water-bearing minerals. More

 Society News

Elderfield to be honored with 2013 Goldschmidt Medal
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The Geochemical Society is pleased to announce that the 2013 V.M. Goldschmidt Award, the premier medal of the Society, is awarded to Professor Henry Elderfield of Cambridge University. The Goldschmidt Award recognizes major achievements in geochemistry or cosmochemistry consisting of either a single outstanding contribution or a series of publications that have had great influence on the field. Professor Elderfield is acknowledged for his wide-ranging contributions to marine geochemistry and paleoclimatology including his landmark paper on Mg/Ca thermometry of foraminifera and contributions to our understanding of the genesis of manganese nodules and the use of trace elements as tracers of ocean dynamics. Prof. Elderfield is a Fellow of the Royal Society, the Geochemical Society, EAG, and the AGU. He is a past winner of the Patterson Award of the Geochemical Society and the Urey Medal of the EAG. The award will be presented at the Goldschmidt Conference in Florence in August.

2013 GSA Annual Meeting — Call for Proposals
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In 2013, the Geological Society of America (GSA) will celebrate its 125th anniversary. The Geochemical Society, as one of the associated societies of GSA, has been asked sponsor topical sessions for the 2013 Annual Meeting in Denver (Oct. 27-30). To help grow geochemical interest at the GSA annual meeting, please contact our liaison, Bill Hart if you would like GS to endorse your proposal. The deadline to add sponsorships is Tuesday, Jan. 15, 2013.

Featured Geochemical Career Center Postings
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Graduate student opportunities in applied geochemistry research (Multidisciplinary Applied Geochemistry Network, Canada)

Senior Professional Staff - Geoscientist (Nuclear Waste Technical Review Board, Arlington, VA, USA)

Assistant Professor, Chemical Oceanography (Florida State University, Tallahassee, FL, USA)

Postdoctoral Scholar, Dept of Geological Sciences (Indiana University, Bloomington, IN, USA)

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New in GCA (v.101, 15 January 2013)
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The effect of Ca2+ ions and ionic strength on Mn(II) oxidation by spores of the marine Bacillus sp. SG-1

Statolith chemistry of two life history stages of cuttlefish: Effects of temperature and seawater trace element concentration

K-feldspar hygrochronology

Formation of niningerite by silicate sulfidation in EH3 enstatite chondrites

Modern soil system constraints on reconstructing deep-time atmospheric CO2

Platinum-alloy and sulfur saturation in an arc-related basalt to rhyolite suite: Evidence from the Pual Ridge lavas, the Eastern Manus Basin

Extreme iron isotope fractionation between colloids and particles of boreal and temperate organic-rich waters

Interpreting U–Pb data from primary and secondary features in lunar zircon

 Latest News

Interior of the Earth GRC
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The upcoming Interior of the Earth Gordon Research Conference (GRC) will take place June, 2-7, 2013 at Mt. Holyoke College (South Hadley, MA , USA). It is focused on deep earth and planetary topics. The conference is preceded by a Gordon Research Seminar (GRS) on the same topic, for early career scientists and graduate students. Same location, June 1-2, 2013. Application is now open. Deadline: May 5, 2013. Early application is recommended, as these unique cutting-edge, inter-disciplinary meetings (GRC and GRS) fill up quickly. To be considered for one of the few remaining oral slots at GRS, please apply before Feb. 1.

Climate change may increase volcanic eruptions
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The rapid rise in sea levels could cause a dramatic increase in volcanic eruptions, according to a new study. The study, published in the journal Geology, found that during periods of rapid climate change over the last million years, the rapid melting of continental glaciers and the resulting sea-level rise eventually increased volcanic eruptions as much as fold. More

Meet the spacecraft exploring the solar system    Share    Share on FacebookTwitterShare on LinkedinE-mail article
NASA's Spirit rover landed on Mars nine years ago on Jan. 3, kicking off a surface mission that's still operational thanks to the amazing endurance of Spirit's twin Opportunity. Mars is currently host to five active space missions, commanding more attention than any planet apart from Earth. But unmanned probes are also exploring many other solar system bodies, from the sun out to Pluto and beyond. More

Asteroid impacts may have transferred carbonaceous material to protoplanet and inner solar system
ScienceDaily    Share    Share on FacebookTwitterShare on LinkedinE-mail article
The protoplanet Vesta has been witness to an eventful past: images taken by the framing camera onboard NASA's space probe Dawn show two enormous craters in the southern hemisphere. The images were obtained during Dawn's year-long visit to Vesta that ended in September 2012. More

How was early Earth kept warm?
Science    Share    Share on FacebookTwitterShare on LinkedinE-mail article
Why do some gases cause greenhouse warming, whereas others do not? H2O is a greenhouse gas because it has a permanent electric dipole moment (a charge separation within the molecule) that allows it to interact strongly with electromagnetic radiation. CO2 also has an electric dipole moment, but it has to bend or stretch asymmetrically to create it, because, unlike H2O, it is a linear molecule. N2 and O2 are not normally considered to be greenhouse gases, because these symmetric, diatomic molecules have no electric dipole moment and cannot bend or stretch to create one. But as Wordsworth and Pierrehumbert show on page 64 of this issue, N2 and molecular hydrogen (H2) can be greenhouse gases under the right conditions; H2 may have been important for Earth's Archean climate (before 2.5 billion years ago). More

Volcanoes on Venus? New clues, and mysteries, about Earth's boiling twin
TIME    Share    Share on FacebookTwitterShare on LinkedinE-mail article
It's got to be frustrating for planetary scientists that the world closest to Earth and most similar in size as well — so similar that it's often described as our planet's twin — is in many ways the toughest to study. More


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