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The Geological Society of America Journal Geology: Dynamic geoscience
Date:2/12/2013

lying deposit. The findings of this study not only provide insight into how large-scale river floods influence wetland sedimentation, they lay the groundwork for identifying previous flood events in the stratigraphic record.


Chemostratigraphy indicates a relatively complete Late Permian to Early Triassic sequence in the western United States Matthew R. Saltzman and Alexa R.C. Sedlacek, School of Earth Sciences, The Ohio State University, Columbus, Ohio 43210, USA. Posted online 7 Feb. 2013; http://dx.doi.org/10.1130/G33906.1.

The Permian-Triassic mass extinction is the largest in Earth's history. In the United States, the record of this critical geobiologic interval was long thought to be absent at a major sedimentary hiatus. Matthew R. Saltzman and Alexa R.C. Sedlacek present new evidence that a more continuous record of the Permian-Triassic boundary extinction event in shallow marine, Bahamas-like carbonate platform deposits of the Confusion Range in western Utah that represent the ancient western margin of Pangaea. This discovery is important because study of the causes of the Permian-Triassic extinction have come almost exclusively from the ancient Tethys region (localities in the Italian Alps, south China, Iran, Pakistan and others). The controversy over the likely causes is in large part a debate over the interpretation of the associated carbon isotope excursion, which is present in western Utah based on our integrated carbon, strontium and sedimentologic studies.


CO2 sequestration in a UK North Sea analogue for geological carbon storage Niklas Heinemann et al., Ikon GeoPressure, Stockton Road, Durham DH1 3LE, UK. Posted online 7 Feb. 2013; http://dx.doi.org/10.1130/G33835.1.

Niklas Heinemann and colleagues examine a natural rock that has held carbon dioxide for millions
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Contact: Kea Giles
kgiles@geosociety.org
Geological Society of America
Source:Eurekalert

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