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GSA Today > Volume 19 (2009)

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GSA Today - Vol. 19, 2009
December
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Enigmatic boulder trains, supraglacial rock avalanches, and the origin of “Darwin's boulders,” Tierra del Fuego
Edward B. Evenson, Patrick A. Burkhart, John C. Gosse, Gregory S. Baker, Dan Jackofsky, Andres Meglioli, Ian Dalziel, Stefan†Kraus, Richard B. Alley, Claudio Berti

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November
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(5.3MB)
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Geobiology: Evidence for early life on Earth and the search for life on other planets
Sherry L. Cady and Nora Noffke
October
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(5.2MB)
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Did natural reactors form as a consequence of the emergence of oxygenic photosynthesis during the Archean?
Laurence A. Coogan, Jay T. Cullen
September
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(5.6MB)
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The Portland Basin: A (big) river runs through it
Russell C. Evarts, Jim E. OíConnor, Ray E. Wells, Ian P. Madin
August
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(3MB)
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The Klondike goldfields and Pleistocene environments of Beringia
Duane G. Froese, Grant D. Zazula, John A. Westgate, Shari J. Preece, Paul T. Sanborn, Alberto V. Reyes, and Nicholas J.G. Pearce
July
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The impact of snowmelt on the late Cenozoic landscape of the southern Rocky Mountains, USA
Jon D. Pelletier
June
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(4.8 MB)
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Back to the future: Greenlandís contribution to sea-level change
Antony J. Long
April/May
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(5.3 MB)
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Understanding the Great Ordovician Biodiversification Event (GOBE): Influences of paleogeography, paleoclimate, or paleoecology?
Thomas Servais, David A.T. Harper, Jun Li, Axel Munnecke, Alan W. Owen, and Peter M. Sheehan
March
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(6.1 MB)
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Pacific Atoll Living: How Long Already and Until When
William R. Dickinson
February
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(3.9 MB)
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A shift from lithostratigraphic to allostratigraphic classification of Quaternary glacial deposits
M.E. Räsänen, J.M. Auri, J.V. Huitti, A.K. Klap, and J.J. Virtasalo
January
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(5 MB)
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2008 GSA Annual Meeting Presidential Address:  Science Article - PDF  Science Article - HTML video
A field geologist looks at a digital world
Judith (Judy) Totman Parrish