GSA Today
Volume 22, Number 4 (April/May 2012)

Cover image

About the cover:
Plate tectonic reconstructions of geological and geophysical data prepared using GPlates.
Top: raster of surface geology; middle: reconstructed topography onshore with seafloor paleoage; bottom: reconstructed grids of Bouguer gravity anomalies. Each data set is shown reconstructed to 120 Ma (left) and 50 Ma (center), together with the present-day configuration (right). Image courtesy Sabin Zahirovic, EarthByte Group. See related article, p. 4–;9.

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