Issues

COVER: Aerial view of Dean's Blue Hole, near Clarence Town on Long Island, Bahamas. This water-filled sinkhole is the deepest known cave in the Bahamas, and the second deepest in the world, at 202 m. Although the processes linked with its formation are still unclear, its considerable depth might suggest a fracture of the bank margin. See ‘Carbon isotope and biostratigraphic evidence for an expanded Paleocene–Eocene Thermal Maximum sedimentary record in the deep Gulf of Mexico’ by Vimpere et al., p. 334–339.

Photograph: Lucas Vimpere and Nabil A. Shawwa