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Life-producing phosphorus carried to Earth by meteorites
ScienceDaily
Scientists may not know for certain whether life exists in outer space, but new research from a team of scientists led by a University of South Florida astrobiologist now shows that one key element that produced life on Earth was carried here on meteorites. In an article published in the new edition of the Proceedings of the National Academy of Sciences, USF Assistant Professor of Geology Matthew Pasek and researchers from the University of Washington and the Edinburg Centre for Carbon Innovation, revealed new findings that explain how the reactive phosphorus that was an essential component for creating the earliest life forms came to Earth.
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PRODUCT SHOWCASE
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SOCIETY NEWS


ELEMENTS: The Mineral-Water Interface
GS
The June issue of Elements magazine (volume 9, issue 3) is in press. As so ably stated by Michael Hochella in his Perspective article leading into the theme of this issue, surfaces and interfaces are the "ubiquitous stuff of nearly all things." Guest Editors Christine Putnis and Encarnacion Ruiz-Agudo have chosen to focus on reactions occurring at mineral–water interfaces. These reactions are central to geochemical processes. They affect a wide range of important environmental issues, such as the composition of natural waters, weathering and soil formation, element cycling, biomineralization, acid mine drainage, and nuclear waste disposal. Through the continuing development of advanced analytical methods, such as atomic force microscopy (AFM), direct observation of mineral reactions at the nanoscale is now possible. Observations have been complemented, as a result of greatly improved computing capabilities, by molecular simulations to confirm or predict experimental results. The cover image illustrates a model simulation of a dissolving crystal surface.

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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GS and geochemistry at GSA-Denver
GS
Thanks to strong volunteer support, there are 33 sessions sponsored or co-sponsored by Geochemical Society at the 2013 GSA Annual Meeting in Denver, CO, this October. Abstract Submission is open through Aug. 6. GS will again be organizing the F. Earl Ingerson Lecture, sponsoring a reception with MSA and the GSA-MGPV division and welcome attendees to our exhibit (Booth 1107).
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Goodarzi Awarded Gilbert H. Cady Award
GS
The Geological Society of America has announced that Geochemical Society member Fariborz Goodarzi (Retired Geological Survey of Canada) has been named the 2013 Gilbert H. Cady Medalist. The award of the GSA Coal Geology Division recognizes his outstanding contributions to the interdisciplinary field of coal geology. The honor will be presented at the 2013 GSA Annual Meeting in Denver, CO, this October.
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Geochemical Career Center
GS
PhD in Experimental Geochemistry





Research Associate in Isotope Geochemistry (GFZ Potsdam, Potsdam, Germany)






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


Job Seekers: View current openings | Post your resume | Career resources

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New in GCA (v.113, 15 July 2013)
GS
Geochronological and geochemical constraints on the formation and evolution of the mantle underneath the Kaapvaal craton: Lu–Hf and Sm–Nd systematics of subcalcic garnets from highly depleted peridotites

Incorporation of strontium in earthworm-secreted calcium carbonate granules produced in strontium-amended and strontium-bearing soil

From evaporated seawater to uranium-mineralizing brines: Isotopic and trace element study of quartz–dolomite veins in the Athabasca system

Selective copper diffusion into quartz-hosted vapor inclusions: Evidence from other host minerals, driving forces, and consequences for Cu–Au ore formation

Microbial phototrophic fixation of atmospheric CO2 in China subtropical upland and paddy soils

Compositional and kinetic controls on liquid immiscibility in ferrobasalt–rhyolite volcanic and plutonic series

The signature of devolatisation: Extraneous 40Ar systematics in high-pressure metamorphic rocks

Binding mechanism of Cu(II) at the clay–water interface by powder and polarized EXAFS spectroscopy

Upper Mississippi Pb as a mid-1800s chronostratigraphic marker in sediments from seasonally anoxic lakes in Eastern Canada

Acidophilic sulfur disproportionation

Nitrification-driven forms of nitrogen metabolism in microbial mat communities thriving along an ammoniumenriched subsurface geothermal stream

Rare earth element (REE)–silicic acid complexes in seawater to explain the incorporation of REEs in opal and the "leftover" REEs in surface water: New interpretation of dissolved REE distribution profiles

Multi-element isotopic analyses of presolar graphite grains from Orgueil

Erratum to 'Control of sulphate and methane distributions in marine sediments by organic matter reactivity' [Geochimica et Cosmochimica 104 (2013) 183–193]

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LATEST NEWS


Tropical caves fill gap in climate record
The Weahter Channel
Slick towers in a tropical island cave provide a 100,000-year climate record rivaling Greenland's pristine ice cores, scientists say. The rare view into past rainfall patterns in the tropics fills a gap in global climate history during a crucial period. Ice cores in Greenland and Antarctica have revealed rapid swings in Earth's climate in the last 100,000 years in the high latitudes. By studying stalagmites in Borneo, in the western Pacific Ocean, researchers at Georgia Tech now know how the tropics responded to the sudden climate shifts. The team discovered some of the abrupt changes did not affect the region, according to a study published in the journal Science Express.
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Research on rare Earth elements in Alaska could help make them less rare
U.S. Geological Survey
A unique deposit of heavy rare earth elements at Alaska's Bokan Mountain could help scientists understand how rare earth element deposits form, according to new research by geologists from Saint Mary's University in Halifax and the U.S. Geological Survey. Rare earth elements are important, but scarce, elements used in components in many cutting edge electronic and defense technologies.
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Iron in Egyptian relics came from space
Scientific American
The 5,000-year-old iron bead might not look like much, but it hides a spectacular past: researchers have found that an ancient Egyptian trinket is made from a meteorite. The result, published in Meteoritics & Planetary Science, explains how ancient Egyptians obtained iron millennia before the earliest evidence of iron smelting in the region, solving an enduring mystery.
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Irish chronicles reveal links between cold weather and volcanic eruptions
ScienceDaily
Medieval chronicles have given an international group of researchers a glimpse into the past to assess how historical volcanic eruptions affected the weather in Ireland up to 1500 years ago. By critically assessing over 40,000 written entries in the Irish Annals and comparing them with measurements taken from ice cores, the researchers successfully linked the climatic aftermath of volcanic eruptions to extreme cold weather events in Ireland over a 1200-year period from 431 to 1649.
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Alpine lakes reflect climate change
ScienceDaily
Increases in temperature as a result of climate change are mirrored in lake waters where temperatures are also on the rise. A new study, by Dr. Martin Dokulil, retired researcher from the Institute for Limnology at the University of Innsbruck in Austria, forecasts surface water temperatures in large Austrian lakes for 2050 and discusses the impact on the lakes' structure, function and water quality.
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Looking for similar articles? Search here, keyword CLIMATE CHANGE.


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