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Biogeochemistry: The great iron dump
Nature (paid subscription required)    Share    Share on FacebookTwitterShare on LinkedinE-mail article
The discovery that marine algal blooms deposit organic carbon to the deep ocean answers some — but not all — of the questions about whether fertilizing such blooms is a viable strategy for mitigating climate change. More



 Society News


Goldschmidt2013 — Call for Sessions
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Goldschmidt2013 will be hosted by EAG in the magnificent Firenze Fiera Congress Center in Florence, on Aug. 25-30, 2013. The organizing committee has identified 24 theme areas, and a range of sessions have been proposed for each theme. Please take a look at the list of themes and sessions and discuss with your colleagues whether there are any obvious gaps in the program. If so please suggest sessions that you think would help make the program more comprehensive. In particular we welcome submissions to the new 'Union' theme (theme 01) which is designed to provide a home for exciting geochemistry that is both high profile and cuts across established themes. The additional sessions submitted will be reviewed by the science committee, and included in the list of sessions where appropriate. If you have any questions about suitability or overlap of your proposed session with existing sessions, please contact the appropriate theme leaders.

Geochemical Career Center posting
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Assistant/Associate Professor in Global Change Oceanography University of South Carolina - Department of Earth and Ocean Sciences - Marine Science Program

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.


Geochemical Career Center
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Does your department have a geochemistry job opening? They may post it in the Geochemical Career Center for a nominal fee (a single 60-day post is US$250), the link to your post will be distributed in future issues of Geochemical News – reaching over 4,000 subscribers and also on our Facebook page with nearly 950 likes. Through August 31, use promotion code GNEWS20 to take 20 percent off your order.


New in GCA (v.90, 1 August 2012)

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An atom counter for measuring 81Kr and 85Kr in environmental samples

The inorganic geochemistry of a peat deposit on the eastern Qinghai-Tibetan Plateau and insights into changing atmospheric circulation in central Asia during the Holocene

Lithium defects and diffusivity in forsterite

A SAFT equation of state for the quaternary H2S–CO2–H2O–NaCl system

234Th in different size classes of sediment trap collected particles from the Northwestern Pacific Ocean

Mg isotope fractionation during calcite precipitation: An experimental study

Response of a modern cave system to large seasonal precipitation variability

Free energies of absorption of alkali ions onto beidellite and montmorillonite surfaces from constrained molecular dynamics simulations

Characterization of subsurface methane production and release over 3 years at a New Hampshire wetland

Gold and copper in volatile saturated mafic to intermediate magmas: Solubilities, partitioning, and implications for ore deposit formation




 Latest News


Solid-liquid iron partitioning in Earth's deep mantle
Nature    Share    Share on FacebookTwitterShare on LinkedinE-mail article
Melting processes in the deep mantle have important implications for the origin of the deep-derived plumes believed to feed hotspot volcanoes such as those in Hawaii. They also provide insight into how the mantle has evolved, geochemically and dynamically, since the formation of Earth. More

Bottom line: Ocean floor sediments may be window on world's warmer future
Scientific American    Share    Share on FacebookTwitterShare on LinkedinE-mail article
Digging into our planet's past could help us prepare for a hot future. One dramatic spike in historical temperatures, the Paleocene–Eocene Thermal Maximum (PETM), occurred around 55.9 million years ago. More

Rapid variability of seawater chemistry over the past 130 million years
Science (paid subscription required)    Share    Share on FacebookTwitterShare on LinkedinE-mail article
Fluid inclusion data suggest that the composition of major elements in seawater changes slowly over geological time scales. This view contrasts with high-resolution isotope data that imply more rapid fluctuations of seawater chemistry. MORE

For a related article, click here: The Marine Sulfur Cycle, Revisited


 

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