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The elemental and isotopic characteristics of groups 1 and 2 serpentinites denote the influx of fluids evolved from the subducting slab. The arc migrated first towards the southeastern flank of the Chortis block, then towards the southern flank of the Maya Block and the Caribeana terrane, and finally towards the Bahamas platform (Pindell et al. These intrusive units are interpreted to represent crustal melts which formed during the Triassic- Jurassic break-up of Pangea, reflecting a regional thermal event. The rocks belonging to the upper level (Eocene to Quaternary) are little disturbed and can be referred to as the cover. The first panel introduces the hero as a ‘man of destiny’ , a catalyst for adventure whether he is aboard a sailing ship, smoking his cigar’s on a hotel’s veranda or riding a steamboat up a river.
In the western segment of the northern Caribbean orogenic belt (present-day western and central Cuba), arc magmatism was interrupted or attenuated since the late Campanian by episodic collision/subduction of intra-proto-Caribbean passive margin sequences similar to those of the North America-related Maya block (Garcia-Casco et al.
El yacimiento es estratiforme, se orienta en dirección NE-SO concordantemente con la estratificación de las pizarras encajantes y está constituido por dos bloques (el bloque Farallones al NE y el bloque Susana al SO) separados por una zona de falla con rumbo N120ºE; una zona de falla con la misma dirección limita también el bloque Farallones en su contacto NE.
Early to Late Cretaceous Quebradagrande Complex in Colombia and the Alao terrane and Celica Formation in Ecuador, until the Late Cretaceous to Early Paleogene accretion oceanic terrains produced the present tectonic setting.At the east end of the Cordillera Central, the trend of the peridotite and of the schistosity in the metamorphic rocks is approximately N. Ma; they are low-K tholeiites, and have geochemical characteristics intermediate between those of typical normal mid-ocean ridge basalt (N-MORB) and island-arc tholeiites (IAT), suggesting that they were formed in a back-arc basin. Inter-American models for the origin of the Caribbean Plate cannot explain the contrasts between the Northern Andes and the Central Andes. Convergence largely consumed the Proto-Caribbean by latest Cretaceous-early Tertiary time, triggering collision of the Caribbean arc system with the North American margin, the tectonic emplacement of ophiolitic and volcanic arc units and subducted oceanic and passive margin terranes onto the margin and the formation of the Caribbean Cretaceous-Tertiary orogenic belt (Cruz-Orosa et al. 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.