The fossil Greater Antilles Arc (GAA), part of the Great Arc of the Caribbean (Burke, 1988), provides an unusual opportunity to examine the complete evolution of an intra-oceanic convergent margin from birth to demise, especially because much of it is exposed above sea-level. Igneous and metamorphic rocks of the GAA (Figure 1) record subduction beneath the Caribbean plate during the Cretaceous and Paleogene spanning about 90 m.y. all through the present ca. 2,000 km length of the convergent margin (e.g., Iturralde-Vinent et al., 2016;Mann et al., 2007; Pindell & Kennan, 2009 and references therein). In most interpretations, the subducting lithosphere corresponds to the North and South American plates separated by the Proto-Caribbean ridge during the GAA lifetime (e.g.,
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