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Giant mass extinction quicker than previously thought: End-Permian extinction happened in 60,000 years
The largest mass extinction in the history of animal life occurred some 252 million years ago, wiping out more than 96 percent of marine species and 70 percent of life on land — including the largest insects known to have inhabited Earth.
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Goldschmidt2014: Accommodations
There are many quality hotels in Sacramento at a range of prices to suit every budget. Goldschmidt2014 has collaborated with the Sacramento Conventions and Visitors Bureau to provide exciting opportunities for Goldschmidt delegates, including discounts on local transport and nearby hotels. For more information on discounts around Sacramento, please visit the Sacramento Visitor's Bureau page. The Sheraton Hotel and the Hyatt Hotel are both offering substantial discounts for Goldschmidt delegates and are conveniently located within easy walking distance of the conference. To book these hotels at the discounted rate please click here.
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ELEMENTS: Asteroids
The February issue of Elements magazine (volume 10, issue 1) is in press. This first issue of 2014 deals with asteroids and highlights this very exciting field of space exploration. Much of the information related in this issue is mind boggling and reads almost like science fiction, but it is real frontier science. Six articles review the discovery and different types of asteroids, as well as current or future space missions to study or recover them. Three special asteroids are singled out: the former asteroid 2008 TC3 that became the Almahata Sitta meteorite after fragmenting above the Sudanese desert on October 6, 2008; the asteroid Itokawa sampled by the JAXA mission Hayabusa, providing the only non-meteoritic samples of an asteroid; Vesta, the most-studied asteroid and the second most massive, visited by NASA’s Dawn mission and interpreted to be the source of 100 known meteorites. Moreover, CosmoElements relates the NEAR-Shoemaker mission at Eros, which was the first detailed exploration of an asteroid. The cover is an artist rendition of the Hayabusa spacecraft approaching asteroid Itokawa.

Current Geochemical Society members can access this issue now via the Elements online archive using your email address (UserID) and member number (Password).

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  Analab corrosion resistant laboratory appliances

Analab manufacture corrosion resistant laboratory appliances such hotplates, acid vapour cleaning stations 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.

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Geochemical Career Center

2 Postdoctoral positions and 3 doctoral positions (University of Münster, Münster, Germany)

Tenure-track faculty position in radiogenic isotope geochemistry (Pennsylvania State University, University Park, PA, USA)

Post doc position for laser ablation geochronologist or thermochronologist (University of Calgary, Calgary, AB, Canada)

Director, Romberg Tiburon Center for Environmental Studies (San Francisco State University, San Francisco, CA, USA)

International research chair in stable isotope biogeochemistry / paleoceanography (LabexMER, Brest/Dinard, France)

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.126, 1 February 2014)
Radiocarbon signatures and size–age–composition relationships of major organic matter pools within a unique California upwelling system

Humus layer is the main locus of secondary SO4 production in boreal forests

Si-metasomatism in serpentinized peridotite: The effects of talc-alteration on strontium and boron isotopes in abyssal serpentinites from Hole 1268a, ODP Leg 209

Correlations between microbial tetraether lipids and environmental variables in Chinese soils: Optimizing the paleo-reconstructions in semi-arid and arid regions

Rayleigh equation for evolution of stable isotope ratios in contaminant decay chains

Biomineralization of iron-phosphates in the water column of Lake Pavin (Massif Central, France)

From dust to varnish: Geochemical constraints on rock varnish formation in the Negev Desert, Israel

Does pyrite act as an important host for molybdenum in modern and ancient euxinic sediments?

An experimental study of basaltic glass–H2O–CO2 interaction at 22 and 50 °C: Implications for subsurface storage of CO2

Early depositional history of metalliferous sediments in the Atlantis II Deep of the Red Sea: Evidence from rare earth element geochemistry

Combined 13C–D and D–D clumping in methane: Methods and preliminary results

Nontronite dissolution rates and implications for Mars

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Conference Calendar March deadlines
Registration Deadlines
Mar. 13: AAG Annual Meeting (USA)
Mar. 31: European Geosciences Union 2014 (Austria)
Mar. 31: International Conference on Atmospheric Dust (Italy)
Mar. 31: ZEOLITE 2014 (Serbia)

Conference organizers — be sure to add your conference to our conference calendar.

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Growth secret of the world's tallest trees uncovered
Scientific American
Trees in California's Sierra Nevada mountains, including giant sequoias, need sunlight, water and just the right kind of granite to grow, a new study finds. The findings help explain the surprisingly patchy growth patterns in one of the most productive forests in the world. Visitors to the western Sierra's lower elevations may find themselves abruptly stepping from a lush redwood grove onto sun-lashed bedrock.
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Scientists reveal how vertebrates came to have a face
Scientists present new fossil evidence for the origin of one of the most important and emotionally significant parts of our anatomy: the face. Scientists show how a series of fossils, with a 410 million year old armored fish called Romundina at its center, documents the step-by-step assembly of the face during the evolutionary transition from jawless to jawed vertebrates.
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America's natural gas system is leaking methane and in need of a fix
The US natural gas system is letting more methane, a potent greenhouse gas, escape into the air than previously thought, a new study confirms.
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How does radioactive waste interact with soil and sediments?
Scientists are developing computer models that show how radioactive waste interacts with soil and sediments, shedding light on waste disposal and how to keep contamination away from drinking water.
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Duke Energy apologizes for nation's third-largest coal-ash spill
CBS News
A top executive at Duke Energy has apologized for the company's massive coal ash spill in North Carolina and pledged to clean up its toxic waste from the Dan River. Paul Newton, president for the company's North Carolina operations, made the apology as he visited with residents in the affected towns of Eden, N.C., and Danville, Va. The company says it is developing a long-term clean-up plan for the river in consultation with state and federal environmental regulators.
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Satellites can spot underwater volcanic eruptions
Oregon State University scientists have discovered how to pinpoint the time and place of underwater volcanic eruptions using satellite images. Volcanic eruptions on the ocean floor can spew large amounts of pumice and fine particles, as well as hot water that brings nutrients to the surface, resulting in plumes of algae. The plumes are picked up as shades of green in satellite images.
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US female geoscience degrees continues to increase
AGI - Geoscience Currents #86
The total number of women receiving degrees in the geosciences continues to follow its long-term growth trend. There was a slight decrease in the number of women receiving master's degrees, but this decline was substantially lower than the decline in men receiving master's degrees. The decline at the master's level appears to be a slight correction following the 46 percent increase in total master's degrees in 2011-2012. Of particular note though, is that the degree level with the highest percentage of female recipients is the doctorate at 43.5 percent. This compares to 41.4 percent of bachelor's and 41.7 percent of master's degrees being awarded to women.

Please see PDF or view the latest Geoscience Currents online at to see all of the 2012-2013 gender degree data.

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Missed last week's issue? See which articles your colleagues read most.

    Solved? Mystery of Atacama Desert's 'white gold' (LiveScience)
Asteroids can have a highly varied internal structure (Science Daily)

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


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