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The AAPG/Datapages Combined Publications Database
GCAGS Transactions
Abstract
Cretaceous-Tertiary Boundary Stratigraphy near San Antonio, Orange Walk District, Belize, Central America
David T. King, Jr.
ABSTRACT
In Albion Quarry near the town of San Antonio, Orange Walk District, Belize, an extremely coarse carbonate-dominated diamictite with basal spheroid-bearing clay layer, totaling 16 m thick, is situated directly above the Maastrichtian Barton Creek Dolomite. The diamictite is a direct ejecta deposit, itself 14 m thick, comprised of debris ranging from clay-size to 8 m diameter boulders. The diamictite represents a terrestrial debris-flow or base-surge deposit from the 300 km diameter Chicxulub impact crater situated in adjacent Yucatan Province, Mexico.
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