GSA Today
Volume 20, Number 7 (July 2010)

Cover image

About the cover:
View of the northern Andes of Colombia. Block diagram by Andrés Mora depicts modern topography and generalized subsurface structure of the Eastern Cordillera and bordering Magdalena Valley (left) and Llanos basin (right). Background image courtesy NASA.See “Resolving uplift of the northern Andes using detrital zircon age signatures” by B.K. Horton et al., p. 4–9.

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