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Ancient asteroids kept on coming
Nature    Share    Share on FacebookTwitterShare on LinkedinE-mail article
The evidence is in the hollow-eyed face of the man in the Moon: a wave of asteroids showered Earth and the Moon in the distant past. They scarred the lunar surface with vast, circular impact basins and wreaked even greater havoc on this planet, which presented a bigger target. More

 Society News


Goldschmidt 2012 Housing and Optional Tours
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HOUSING REGISTRATION ENDS JUNE 1. Special hotel rates have been secured for Goldschmidt attendees staying in Montreal from June 23 to July 3. Please submit your Housing Registration Form by June 1 to secure these special rates. If you require further assistance with your booking, please contact Tourisme Montreal by phone +514-844-0848 (Toll free in North America: 1-888-722-2220) or by email at reservation@tourisme-montreal.org.

OPTIONAL TOURS. Montreal's charisma, old world charm, and "joie de vivre" are waiting for you at this year's congress. Five optional tours are being arranged for you and your accompanying guests including: a Sunday Motorcoach Montreal City Tour, a Sunday Walking Tour of Old Montreal [Link: ], a Monday Walking Tour of Old Montreal, a Saturday Quebec City Day Trip, and a Saturday Ottawa Day Trip. For more information on these tours and register please visit our Tours Desk, but please hurry as spaces are limited.


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New in GCA (v85, 15 May 2012)
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Paired δ34S data from carbonate-associated sulfate and chromium-reducible sulfur across the traditional Lower–Middle Cambrian boundary of W-Gondwana

Silica- and sulfate-bearing rock coatings in smelter areas: Products of chemical weathering and atmospheric pollution I. Formation and mineralogical composition

Sr and 87Sr/86Sr in estuaries of western India: Impact of submarine groundwater discharge

Formation of hydroxylapatite from co-sorption of phosphate and calcium by boehmite

Zn sorption modifies dynamically the layer and interlayer structure of vernadite

Partitioning of lithium between smectite and solution: An experimental approach

Influence of humic acid imposed changes of ferrihydrite aggregation on microbial Fe(III) reduction

Distribution and carbon isotope patterns of diterpenoids and triterpenoids in modern temperate C3 trees and their geochemical significance

Effect of H2O on the density of silicate melts at high pressures: Static experiments and the application of a modified hard-sphere model of equation of state

Comment and Response on "Valence state of titanium in the Wark–Lovering rim of a Leoville CAI as a record of progressive oxidation in the early Solar Nebula" by K.A. Dyl, J.I. Simon and E.D. Young

Comment and Response on "Oxygen isotopes in calcite grown under cave-analogue conditions" by C.C. Day and G.M. Henderson


3 Geochemical Society members elected to National Academy
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The National Academy of Sciences, one of the most prestigious honorary scientific societies in the United States, elected 84 new members and 21 foreign associates on May 1. New members from the geosciences were dominated by geochemists including former GS President Susan Brantley, current President Richard Carlson, and former GS Board member Patricia Dove.




 Latest News


AGU-VGP Calls for Bowen Award Nominations
American Geophysical Union    Share    Share on FacebookTwitterShare on LinkedinE-mail article
The N.L Bowen Award is given annually by the VGP (Volcanology, Geochemistry, Petrology) Section of the American Geophysical Union for outstanding contributions to volcanology, geochemistry or petrology. Nominations are due to the Committee Chair, Colin Wilson by May 25, 2012.

Life in the sea found its fate in a paroxysm of extinction
The New York Times    Share    Share on FacebookTwitterShare on LinkedinE-mail article
It may never be as well known as the Cretaceous extinction, the one that killed off the dinosaurs. Yet the much earlier Permian extinction — 252 million years ago — was by far the most catastrophic of the planet's five known paroxysms of species loss. More

2 centuries of limited variability in subtropical North Atlantic thermocline ventilation
Nature    Share    Share on FacebookTwitterShare on LinkedinE-mail article
Ventilation and mixing of oceanic gyres is important to ocean-atmosphere heat and gas transfer, and to mid-latitude nutrient supply. The rates of mode water formation are believed to impact climate and carbon exchange between the surface and mid-depth water over decadal periods. More

Stormy periods over the northwestern Mediterranean Sea
CO2 Science    Share    Share on FacebookTwitterShare on LinkedinE-mail article
The authors write that "the Mediterranean region is one of the world's most vulnerable areas with respect to global warming," citing Giorgi (2006); and they thus consider it to be extremely important to determine what impact further temperature increases might have on the storminess of the region. More

Archaea of the miscellaneous crenarchaeotal group are abundant, diverse and widespread in marine sediments
Nature (paid subscription required)    Share    Share on FacebookTwitterShare on LinkedinE-mail article
Members of the highly diverse Miscellaneous Crenarchaeotal Group (MCG) are globally distributed in various marine and continental habitats. In this study, we applied a polyphasic approach (rRNA slot blot hybridization, quantitative PCR (qPCR) and catalyzed reporter deposition FISH) using newly developed probes and primers for the in situ detection and quantification of MCG crenarchaeota in diverse types of marine sediments and microbial mats. More

'Faster-ticking clock' indicates early solar system may have evolved faster than we think
Space Daily    Share    Share on FacebookTwitterShare on LinkedinE-mail article
Our solar system is four and a half billion years old, but its formation may have occurred over a shorter period of time than we previously thought, says an international team of researchers from the Hebrew University of Jerusalem and universities and laboratories in the US and Japan. More

Mars volcanic glass may be hotspot for life
Space    Share    Share on FacebookTwitterShare on LinkedinE-mail article
Glass sand on Mars may point the way to chemically-rich water ideal for hosting life. The newly discovered glass dune fields, spread across almost a third of the planet, likely formed from interactions between magma and ice, or water — interactions that could create the perfect environments for microbial life. More


 
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