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Carbonate rocks are unrecognized methane sink
Oregon State University
Since the first undersea methane seep was discovered 30 years ago, scientists have meticulously analyzed and measured how microbes in the seafloor sediments consume the greenhouse gas methane. They have now found a type of rock known as authigenic carbonate also contains vast amounts of active microbes that take up methane. This demonstrates that the global methane process is still poorly understood.
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Special Publication Series now open access
The first seven volumes of the Geochemical Society's Special Publications Series are now available in PDF for free on our website.
Vol. 1 – Magmatic Processes (Tribute to H.S. Yoder)
Vol. 2 – Fluid-Mineral Interactions (Tribute to H.P. Eugster)
Vol. 3 – Stable Isotope Geochemistry (Tribute to Samuel Epstein)
Vol. 4 – Victor Moritz Goldschmidt: Father of Modern Geochemistry
Vol. 5 – Mineral Spectroscopy (Tribute to R.G. Burns)
Vol. 6 – Mantle Petrology (Tribute to F.R. Boyd)
Vol. 7 – Water-Rock Interactions (Tribute to D.A. Crerar)
A limited number of the hardcover editions are still available for purchase.
Analab manufacture corrosion resistant laboratory appliances such as acid vapour cleaning stations, hotplates, 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.
Please visit us at GSA 2014 in Vancouver, Booth 1018.
Looking for photos of 1st Goldschmidt conferences
Goldschmidt2015 will celebrate its 25th Anniversary next year and we are looking for photos of past Goldschmidt conferences, especially prior to 2006. We are also looking for photos of the cover pages of each Goldschmidt program not already available on the Conference Archive. If you have any, please contact firstname.lastname@example.org.
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New in GCA (v.142, 1 Oct 2014)
Interpretation of speleothem calcite δ13C variations: Evidence from monitoring soil CO2, drip water, and modern speleothem calcite in central Texas
Examination of Cr(VI) treatment by zero-valent iron using in situ, real-time X-ray absorption spectroscopy and Cr isotope measurements
Heat capacity, configurational heat capacity and fragility of hydrous magmas
Distribution and size fractionation of elemental sulfur in aqueous environments: The Chesapeake Bay and Mid-Atlantic Ridge
Cr isotope fractionation factors for Cr(VI) reduction by a metabolically diverse group of bacteria
Evidence for a palaeo-oil column and alteration of residual oil in a gas-condensate field: Integrated oil inclusion and experimental results
Impact of sedimentary degradation and deep water column production on GDGT abundance and distribution in surface sediments in the Arabian Sea: Implications for the TEX86 paleothermometer
Implications of high-precision measurements of 13C–18O bond ordering in CO2 for thermometry in modern bivalved mollusc shells
Decoupling of sulfur and nitrogen cycling due to biotic processes in a tropical rainforest
1st photos of water ice on Mercury captured by NASA spacecraft
The first-ever photos of water ice near Mercury's north pole have come down to Earth, and they have quite a story to tell.
The images, taken by NASA's MESSENGER spacecraft, suggest that the ice lurking within Mercury's polar craters was delivered recently, and may even be topped up by processes that continue today, researchers said.
Scientists find ancient mountains that fed early life
Australian National University via ScienceDaily
Scientists have found a huge mountain range in Gondwana, 600 million years ago. It ran from modern west Africa to northeast Brazil, and as it eroded it fed the oceans with nutrients that fueled an explosion of early life on Earth.
Storing greenhouse gas underground — for a million years
When Canada switched on its Boundary Dam power plant earlier, it signaled a new front in the war against climate change. The commercial turbine burns coal, the dirtiest of fossil fuels, but it traps nearly all the resulting carbon dioxide underground before it reaches the atmosphere. Part of this greenhouse gas is pumped into porous, water-bearing underground rock layers. Now, a new study provides the first field evidence that CO2 can be stored safely for a million years in these saline aquifers, assuaging worries that the gas might escape back into the atmosphere.
Heidelberg physicists render usable method for detecting extremely rare inert gas isotopes for water dating
In Earth and environmental sciences, radioactive isotopes, atom variants that decay over time, play a major role in age determination. A radioactive isotope of the inert gas argon 39, for example, is used to determine the age of water or ice. Such isotopes are extremely rare, however — only a single 39 Ar isotope occurs in a thousand trillion argon atoms.
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