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Small differences in sameness
Fresh evidence shows that the iron isotopic composition of Earth's silicate component does not, as was previously thought, reflect the formation of the planet's core at high pressure nor losses of material to space.
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  Visit the Geosciences Knowledge Library

For decades Thermo Fisher Scientific has worked with Geoscientists helping to achieve a greater understanding of the earth and our planets. The data provided from the innovative technologies has been documented in a wide variety of literature. This knowledge is now accessible on Learn more about instruments and applications for the analysis of elements and isotopes.


Three GS members elected to U.S. National Academy
Three members of the Geochemical Society were elected to the U.S. National Academy of Sciences on April 30. The three new inductees are:

Kenneth A. Farley, W.M. Keck Foundation Professor of Geochemistry and Chair, Division of Geological and Planetary Sciences, California Institute of Technology. Farley pursues a wide range of studies utilizing the noble gases to examine subjects ranging from deep mantle structure, to the influx rate of extraterrestrial material to Earth, and particularly the development and application of a number of low-temperature thermochronologic methods. His GS recognitions include 2009 Gast Lecturer and 2013 Geochemical Fellow.

Katherine H. Freeman, Professor in the Department of Geosciences at Pennsylvania State University. Freeman, incoming President of the Organic Geochemistry Division of the Geochemical Society, studies fossil molecules and their stable isotopic compositions with applications to ancient climate, microbial biogeochemistry and the signatures of life on Earth and beyond. Her GS recognitions include 2007 Gast Lecturer and 2011 Geochemical Fellow.

Terry A. Plank, Professor in the Department of Earth and Environmental Sciences, Lamont Doherty Earth Observatory of Columbia University. Plank studies volcanism at subduction zones including the processes of magma generation, the role of crustal recycling and sediment subduction, and the water content of magmas for its effect on magma evolution and eruption. Her GS recognitions include 2007 Ingerson Lecturer and 2011 Geochemical Fellow.

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Geochemical Career Center
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Postdoctoral Research Associate - Geochemistry & Interfacial Sciences (Oak Ridge National Laboratory, Oak Ridge, TN, USA)

Associate professor in metamorphic petrology/ structural geology (Aarhus University, Aarhus, Denmark)

Maersk Oil Chair in Applied Geophysics (Aarhus University, Aarhus, Denmark)

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New in GCA (v.110, 01 June 2013)
A double-spike method for K–Ar measurement: A technique for high precision in situ dating on Mars and other planetary surfaces

Cryogenic formation of brine and sedimentary mirabilite in submergent coastal lake basins, Canadian Arctic

Copper isotope fractionation between aqueous compounds relevant to low temperature geochemistry and biology

The effect of high ionic strength on neptunium (V) adsorption to a halophilic bacterium

SO2 sequestration in large volcanic eruptions: High-temperature scavenging by tephra

Calcium isotope fractionation during plant growth under a limited nutrient supply

The formation of Ca-Cl-rich groundwaters in the Dry Valleys of Antarctica: Field measurements and modeling of reactive transport

Fluid-present melting of sulfide-bearing ocean-crust: Experimental constraints on the transport of sulfur from subducting slab to mantle wedge

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NSF Earth Sciences Division seeking Section Head
The National Science Foundation (NSF) is seeking candidates to serve as the Section Head for the Surface Earth Processes Section of the Division of Earth Sciences. The position is responsible for overall planning, management and commitment of budgeted funds for the section, which includes Geobiology and Low Temperature Geochemistry, among others. The position also guides the Section in formulating and implementing its research objectives and manages its administrative, fiscal and personnel aspects. Applications will be accepted from May 1 - 29, 2013.
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Studying meteorites may reveal Mars' secrets of life
In an effort to determine if conditions were ever right on Mars to sustain life, a team of scientists, including a Michigan State University professor, has examined a meteorite that formed on the Red Planet more than a billion years ago. And although this team's work is not specifically solving the mystery, it is laying the groundwork for future researchers to answer this age-old question.
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Helium gas heralded underwater volcano eruption
As the volcanic island of El Hierro, the smallest of Spain's Canary Islands, rumbled and groaned over the course of seven months in 2011 and 2012, gases silently percolated up through the island's soil and groundwater. Eventually, a spectacular plume appeared off the southern coast of the island, a sign that El Hierro volcano, an underwater volcano just offshore, had finally erupted.
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Lake found in Sierra Nevada with the oldest remains of atmospheric contamination in Southern Europe
A team of scientists find in the Laguna de Rio Seco lagoon, at an altitude of 3,020 m., evidence of atmospheric pollution caused by lead and linked to metallurgical activities from 3,900 years ago (Early Bronze Age). Lead pollution increased gradually during the Late Bronze Age and Early Iron Age, coinciding with the development and expansion of metallurgy in southern Europe.
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Missed last week's issue? See which articles your colleagues read most.

    Oxygen cycle on early Earth may be more dynamic than thought (Zee News)
Ancient Earth crust stored in deep mantle (ScienceDaily)
Fossil shells, new geochemical technique provide clues to ancient climate cooling (R&D Magazine)
Marilyn Fogel named 2013 Treibs Medalist (GS)

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


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