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Hydrous melting of the martian mantle produced both depleted and enriched shergottites
Geology    Share    Share on FacebookTwitterShare on LinkedinE-mail article
The search for water in our solar system is one of the primary driving forces for planetary science and exploration because water plays an important role in many geologic processes and is required for biologic processes as we currently understand them. More

 Society News

Geochemical Society Award nominations
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While at Goldschmidt, did you see a presentation from a young geochemist that made it clear that person is off to a great future? Did one of the presentations confirm to you that the presenter has been doing great geochemistry for a long time, but without adequate recognition? Do something about it. Nominate them for a Geochemical Society Award. Awards not only provide recognition of quality work for the award winner, but they also help to advance the field of geochemistry by letting research institutions know that the work of one of their faculty is highly regarded by their peers. Many outstanding geochemists have not received the recognition that their excellent work deserves. The list of award winners does not adequately reflect the diversity of the Geochemical Society membership in many criteria. Why? A major reason is that too few take the time to nominate worthy candidates for Society recognition. Break the trend. Nominations are easy and the nomination deadline - October 15 - is still a long way away.

Past award speeches online
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The July 15 issue of GCA features several speeches from awardees including: Martin Schoell (Treibs 2008), Kenneth Peters (Treibs 2009), John Volkman (Treibs 2010), Mark Thiemens (Goldschmidt 2009), Boaz Luz (Patterson 2009) and Cin-Ty Lee (Clarke 2009).

New in GCA (v.89, 15 July 2012)
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Aluminium competitive effect on rare earth elements binding to humic acid

Os, Nd, O and S isotope constraints on country rock contamination in the conduit-related Eagle Cu–Ni–(PGE) deposit, Midcontinent Rift System, Upper Michigan

Iron isotope fractionation in planetary crusts

Experimental determination of iron isotope fractionations among Fe2+aq – FeSaq – Mackinawite at low temperatures: Implications for the rock record

Helium, neon, and argon composition of the solar wind as recorded in gold and other Genesis collector materials

The partitioning of sulfur and chlorine between andesite melts and magmatic volatiles and the exchange coefficients of major cations

Mono- and dihydroxyl glycerol dibiphytanyl glycerol tetraethers in marine sediments: Identification of both core and intact polar lipid forms

Carbon sequestration via reaction with basaltic rocks: Geochemical modeling and experimental results

A petrological and chemical reexamination of Main Group pallasite formation

 Latest News

Geochemistry Program Director at NSF
National Science Foundation    Share    Share on FacebookTwitterShare on LinkedinE-mail article
The U.S. National Science Foundation (NSF) announces a permanent job opening as Program Director in the Petrology and Geochemistry Program in the Division of Earth Sciences. Responsibilities include long-range planning and budget development as well as proposal evaluation in areas including volcanology, experimental petrology, mineral physics, geochemistry of the mantle and crust, and economic geology.

In addition, NSF also offers opportunities for temporary program directors - called Rotators. As a rotator, you can retain your ties to your current institution and return to it with new insights and experience for your team. A Dear Colleague Letter canvassing for rotators in the Division of Earth Sciences can be found at

Could a whiff of methane revive the exploration of Mars?
Science (paid subscription required)    Share    Share on FacebookTwitterShare on LinkedinE-mail article
In 2003, three independent groups reported detecting methane in the atmosphere of Mars. Whether the reported methane is from microbes eking out a living beneath the surface or from deep stirrings of the geologically moribund planet, no one can say. Either prospect would excite scientists, but only martian biology could rejuvenate a troubled NASA Mars program. More

Remote Siberian lake holds clues to Arctic — and Antarctic — climate change
National Science Foundation    Share    Share on FacebookTwitterShare on LinkedinE-mail article
Intense warm climate intervals — warmer than scientists thought possible — have occurred in the Arctic over the past 2.8 million years. That result comes from the first analyses of the longest sediment cores ever retrieved on land.

Click here to read the Science article, "2.8 Million Years of Arctic Climate Change from Lake El'gygytgyn, NE Russia".

A new view of Earth: The coevolution of rocks and life
The Huffington Post    Share    Share on FacebookTwitterShare on LinkedinE-mail article
The story of Earth is a drama of constant, sometimes violent, change. Volcanoes, earthquakes, colliding tectonic plates and giant asteroid impacts have all imposed their transformations on Earth's outer layers. Yet, in what is becoming one of the biggest surprises in modern geology, it now appears that the most significant agent of change of Earth's near-surface environment is life. The evidence is everywhere, locked in almost every rock and mineral, but was hidden in plain sight. More

Icelandic volcanoes slumber today, but not forever
ScienceNews    Share    Share on FacebookTwitterShare on LinkedinE-mail article
For a volcano that once paralyzed most of Europe, Eyjafjallajökull is surprisingly peaceful. Everyone's favorite unpronounceable Icelandic volcano grabbed headlines two years ago, when erupting magma hit a glacier and ash exploded into the sky. More

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