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Early Eocene tuff, mudstone, limestone, and limestone pebble conglomerate of the Los Banitos Formation occur south of the Loma Caballero Formation. We interpret the Yucatan Basin as a back‐arc basin formed during the northeastward movement of the Caribbean volcanic arc that is now exposed in Cuba, evolved during the early Cretaceous to middle Eocene, and was terminated by collision with the Bahama carbonate platform during the late Paleocene to middle Eocene.

High pressure complexes formed in the associated subduction zone, including serpentinite-matrix mélanges bearing tectonic blocks of mostly oceanic-and volcanic arc-derived blueschist and eclogite facies rocks (Blanco-Quintero et al. As the last one area seems related to the Yucatan (Maya) block, some authors consider the metamorphic terranes as fragments of the Maya block that travelled to the west.

This complexity is reflected in the diversity of the subject matter covered by the 28 papers in the volume. De NE a SO también se observa una variación en la composición química de la esfalerita, la cual se hace progresivamente más rica en Zn, a la vez que cristaliza una generación más tardía de esfalerita extremadamente pobre en Fe (<1% en peso). La presencia de cuarzo reemplazando a los sulfuros y carbonatos hacia el techo de la mineralización, aunque también en diversos horizontes intercalados en el cuerpo mineral a diferentes profundidades (incluso próximas al muro), pone de manifiesto la existencia de un proceso de silicificación generalizado. Sedimentary upper Campanian and Maastrichtian sections rest on top of the older Cretaceous sections.

Arc-continent collision is also recorded by metamorphism and obduction of ophiolitic complexes onto continental margins in Guatemala, Cuba, Hispaniola, and Puerto Rico Garcia-Casco et al. Transcurrent displacement may begin just after this time (note: Chortis migration is larger than Eocene–Recent Cayman length).Muestra una estructura zonal con una zona basal discontinua rica en pirita y una zona superior heterogénea en la que varían tanto las proporciones modales de sulfuros+carbonatos (localmente con cuarzo), como la abundancia relativa de esfalerita+galena respecto a pirita. Pratt's main series in the second part of his career include Gli scorpioni del deserto and Jesuit Joe. la acumulación de cuarzo (chert), al igual que la de barita y óxidos de Fe, estaría ligada a la precipitación de material exhalítico al final de cada pulso hidrotermal sobre el fondo marino, siendo más abundante hacia el techo y hacia posiciones distales de la mineralización. The chemical compositions antigoritites, veins and blackwalls indicate a LILE- and LREE-enriched fluid evolved from the subducting plate, while SrNd isotope systematics are compatible with an external fluid composed of a mixture of fluids evolved from sediments and, probably to a lesser extent, altered oceanic crust. Diagnosis: A Plica with dorsal scales in 92–125 (usually 110–125) rows at midbody; scales on snout imbricate and keeled; dorsolateral and ventrolateral folds well developed; head length 21–22% of the SVL; one longitudinal dewlap fold; and a dorsal pattern of black and green transverse bands.

As a consequence of the development of the Yucatan Basin in the western part of the orogenic belt, the Pinos, Escambray, and probably the Guayabal terranes were exhumed in an intra-arc environment, whereas the East Yucatan(? La infiltración de estas salmueras a través de la potente secuencia de areniscas y limolitas aumentó su temperatura hasta 100-200ºC favoreciendo la disolución y movilización del Zn y Pb necesarios para formar la mineralización principal.In: DeVerteuil LAAG (Ed) Trinidad: Its Geography, Natural Resources, Administration, Present Condition, and Prospects. This study integrates gravity, magnetic, and a 5,500 km grid of 2D seismic data to carry out a tectonostratigraphic analysis of the Yucatan Basin. Born in Rimini, Italy to Rolando Prat and Evelina Genero, Hugo Pratt spent most of his childhood in Venice in a very cosmopolitan family environment. Uplift and erosion seem to have taken place in Late Campanian to Early Maestrichtian; and middle to late Maestrichtian(?