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Early anthropogenic transformation of the Danube-Black Sea system
Nature    Share    Share on FacebookTwitterShare on LinkedinE-mail article
Over the last century humans have altered the export of fluvial materials leading to significant changes in morphology, chemistry, and biology of the coastal ocean. Here we present sedimentary, paleoenvironmental and paleogenetic evidence to show that the Black Sea, a nearly enclosed marine basin, was affected by land use long before the changes of the Industrial Era. More



 Society News


Granitic Pegmatites: Elements v8n4, Aug. 2012
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As David London argued in his proposal to Elements, pegmatites and their amazing textures and large crystals are an excellent way to attract students to the study of rocks and Earth science. Textbooks suggest that pegmatites crystallized over a long time from a very fluid magma, hence the large size of their crystals. Current thinking, however, as outlined in this issue, is that pegmatites crystallized from an undercooled viscous magma in a matter of days. The "Granitic Pegmatites" issue (volume 8, number 4, 80 pages) should be mailed around Sept. 5 and the online version is available on the elementsmagazine.org website and on GeoScienceWorld.


Elements electronic access

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Did you know that members have access to all Elements back issues to volume 1, issue 1? That's 45 thematic issues and growing! To access the featured articles, members only need their e-mail address and membership number. If you cannot remember your member number, you can request it by email from the GS Business Office.

Welcome Montreal Goldschmidt Members!
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Delegates who registered at the non-member rate for the Goldschmidt2012 conference received a two-year membership (2013 and 2014) to the Geochemical Society. What does that mean? They enjoy all the great membership benefits like Elements magazine (6 issues/yr), discounts on publications like the popular MSA/GS series Reviews in Mineralogy and Geochemistry, subscription to this weekly e-newsletter, Geochemical News, and more. Thank you for your membership and we look forward to being your source for information on the geochemical community.


Recent Geochemical Career Center postings

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NEW! USGS Mendenhall Research Fellowship in Noble Gas Isotopes or Stable Isotopes (US Geological Survey, Denver, CO, USA)

NEW! Associate Isotope Geochemist or Isotope Geochemist (Illinois State Geological Survey, Urbana-Champaign, IL, USA)

Faculty Positions in Continental Margins and Coastal Environments (Scripps Institution of Oceanography, San Diego, CA, USA)

Post Doc Appointee – Geochemistry (Sandia National Lab, Albuquerque, NM, USA)

Environmental Earth Sciences Faculty Position (University of Notre Dame, South Bend, IN, USA)

Assistant Professor in Aqueous Geochemistry/ Biogeochemistry (University of South Carolina, Columbia, SC, USA)

Assistant Professor in Sedimentary Systems Geology (University of South Carolina, Columbia, SC, USA)

Analytical Fluid Geochemist (GNS Science, Lower Hutt, New Zealand)

Harry S. Truman Fellowship In National Security Science and Engineering (Sandia National Lab, Albuquerque, NM, USA)

Assistant/Associate Professor in Global Change Oceanography (University of South Carolina, Columbia, SC, USA)

Job Seekers: It only takes a few minutes to create an account to apply for jobs. Sign up now for access to all the great features on Geochemical Career Center.

Employers: For a nominal fee (a single 60-day post is 250 USD), the link to your post will be distributed in future issues of Geochemical News – reaching over 4,100 subscribers and also on our Facebook page with nearly 1,000 likes.




 Latest News


CIDER Workshop to follow AGU Fall Meeting
CIDER    Share    Share on FacebookTwitterShare on LinkedinE-mail article
This workshop serves as a kick-off for the CIDER 2013 summer program, on the topic "From crust to mantle: continental formation and destruction" and as a retrospective on the CIDER 2012 summer program. The workshop will be held the Saturday following the Fall AGU meeting from 9 a.m. to 5 p.m. Dec. 8, 2012 in Berkeley, Calif. Stay an extra day after AGU, decompress and get acquainted with CIDER in the relaxed atmosphere of a few keynote talks and lots of time for discussion. The registration deadline is Nov. 1, 2012. CIDER-II is funded by the NSF/FESD program. More

How many mountains can we mine? Assessing the regional degradation of Central Appalachian rivers by surface coal mining
Environmental Science & Technology (subscription required)    Share    Share on FacebookTwitterShare on LinkedinE-mail article
Surface coal mining is the dominant form of land cover change in Central Appalachia, yet the extent to which surface coal mine runoff is polluting regional rivers is currently unknown. We mapped surface mining from 1976 to 2005 for a 19,581 km² area of southern West Virginia and linked these maps with water quality and biological data for 223 streams. More

Ocean science: Ancient burial at sea
Nature (subscription required)    Share    Share on FacebookTwitterShare on LinkedinE-mail article
A study reveals cyclic changes in the rate of burial of biogenic calcium carbonate at the Pacific ocean floor 43 million to 33 million years ago, as Earth exited a warm 'greenhouse' state to become an ice-capped planet. More

Organic micropollutants in rivers downstream of the megacity Beijing: Sources and mass fluxes in a large-scale wastewater irrigation system
Environmental Science & Technology (subscription required)    Share    Share on FacebookTwitterShare on LinkedinE-mail article
The Haihe River System (HRS) drains the Chinese megacities Beijing and Tianjin, forming a large-scale irrigation system severely impacted by wastewater-borne pollution. The origin, temporal magnitudes, and annual mass fluxes of a wide range of pharmaceuticals, household chemicals, and pesticides were investigated in the HRS, which drains 70 percent of the wastewater discharged by 20 million people living in Beijing. Based on Chinese consumption statistics and our initial screening for 268 micropollutants using high-resolution mass spectrometry, 62 compounds were examined in space and time (2009–2010). More

Vertical distribution of microbial communities in a perennially stratified Arctic lake with saline, anoxic bottom waters
Nature    Share    Share on FacebookTwitterShare on LinkedinE-mail article
Meromictic lakes are useful biogeochemical models because of their stratified chemical gradients and separation of redox reactions down the water column. Perennially ice-covered meromictic lakes are particularly stable, with long term constancy in their density profiles. More

Water chemistry: 50 years of change and progress
Environmental Science & Technology (subscription required)    Share    Share on FacebookTwitterShare on LinkedinE-mail article
Water chemistry evolved from early foundations in several related disciplines. Although it is difficult to associate a precise date to its founding, several events support the argument that the field as we know it today developed in the mid-20th century — at the dawn of the "environmental era" — that is, ~1960. More


 

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