GSA Today
Volume 18, Number 11 (November 2009)

About the cover:
Sheeted dike complex of the Cretaceous Kizildag ophiolite, SW Turkey. Steeply NW-dipping sheeted dikes here are truncated by dike-parallel and mineralized normal faults of an intra-oceanic origin. Photo by Y. Dilek. See “The significance of sheeted dike complexes in ophiolites” by P.T. Robinson et al., p. 4–10.