Abstract
The eastern Yucatan continental margin and the rest of the Western Caribbean are characterized by linear fault ridges that merge southwestward. This tectonic fabric is believed to be the result of the rotation of the Yucatan peninsula away from Guatemala-Honduras. Initial rotation formed the Yucatan basin and fragmented the Greater Antillean geosyncline in Late Jurassic-mid-Cretaceous time. Late Cenozoic rotation produced the Cayman Ridge-Cayman Trough-Nicaraguan Rise complex, and the late Cenozoic orogenic activity in eastern Cuba, Hispaniola, and Jamaica. Left-lateral motion along the Cayman Trough since the Eocene is believed to be several tens of kilometers, not 180-200 km as previously suggested by others.
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