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Application of a strontium isotope stratigraphy to the Late Cretaceous sedimentary succession of Antarctica has provided the impetus for a comprehensive stratigraphical revision of the terminal Maastrichtian Stage. Both the base and top of the stage have been defined by strontium isotope dates, and a series of inter-island correlations within the James Ross Island region (north-eastern Antarctic Peninsula)...
Key exposures through the Late Cretaceous (Campanian-Maastrichtian) Marambio Group are located in the Admiralty Sound region, James Ross Island group, Antarctica. On southern James Ross Island, an extensive sequence of bioturbated silty mudstones, muddy sandstones, fine-grained sandstones, ash layers and rare conglomerates has been subdivided into two component members of the Santa Marta Formation:...
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