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Fracking: Gas leaks from faulty wells linked to contamination in some groundwater
Ohio State University via ScienceDaily
A study has pinpointed the likely source of most natural gas contamination in drinking-water wells associated with hydraulic fracturing, and it's not the source many people may have feared.
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New in GCA (v.141, 15 September 2014)
Dissolved barium behavior in Louisiana Shelf waters affected by the Mississippi/Atchafalaya River mixing zone

Evaluation of 224Ra as a tracer for submarine groundwater discharge in Long Island Sound (NY)

Assessing the origins of aliphatic amines in the Murchison meteorite from their compound-specific carbon isotopic ratios and enantiomeric composition

Pre-aged plant waxes in tropical lake sediments and their influence on the chronology of molecular paleoclimate proxy records

[open access] Modeling the signature of sulfur mass-independent fractionation produced in the Archean atmosphere

Morphological ripening of fluid inclusions and coupled zone-refining in quartz crystals revealed by cathodoluminescence imaging: Implications for CL-petrography, fluid inclusion analysis and trace-element geothermometry

Molybdenum isotopes in two Indian estuaries: Mixing characteristics and input to oceans

Mantle–crust interactions in the oceanic lithosphere: Constraints from minor and trace elements in olivine

Enhancement of denitrification in permeable carbonate sediment due to intra-granular porosity: A multi-scale modelling analysis

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New in G-Cubed (v.15, issue 8)
The Cobb hot spot: HIMU-DMM mixing and melting controlled by a progressively thinning lithospheric lid

Approximately 1.78 Ga mafic dykes in the Lüliang Complex, North China Craton: Zircon ages and Lu-Hf isotopes, geochemistry, and implications

Deciphering bottom current velocity and paleoclimate signals from contourite deposits in the Gulf of Cádiz during the last 140 kyr: An inorganic geochemical approach

Effect of latent heat of freezing on crustal generation at low spreading rates

Formation and geomorphologic history of the Lonar impact crater deduced from in situ cosmogenic 10Be and 26Al

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Study on global carbon cycle may require reappraisal of climate events in Earth's history
University of Miami Rosenstiel School of Marine & Atmospheric Science via ScienceDaily
A recent study of the global carbon cycle offers a new perspective of Earth's climate records through time. Scientists suggest that one of the current methods for interpreting ancient changes in the concentration of carbon dioxide in the atmosphere and oceans may need to be re-evaluated.
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Early Earth less 'Hellish' than previously thought
Vanderbilt University via ScienceDaily
Conditions on Earth during its first 500 million years may have been cool enough to form oceans of water instead of being too hot for life to form. This alternate view of Earth's first geologic eon, called the Hadean, has gained substantial new support from the first detailed comparison of zircon crystals that formed more than 4 billion years ago with those formed contemporaneously in Iceland, which has been proposed as a possible geological analog for early Earth.
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Missed last week's issue? See which articles your colleagues read most.

    Clues to trapping carbon dioxide in rock: Calcium carbonate takes multiple, simultaneous roads to different minerals (Pacific Northwest National Laboratory via ScienceDaily)
Life forms appeared at least 60 million years earlier than previously thought (Trinity College Dublin via ScienceDaily)
Researchers model Yellowstone super-eruption ash cloud (redOrbit)

Don't be left behind. Click here to see what else you missed.


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