Changes

===Albian-Cenomanian===

===Albian-Cenomanian===

Except for the Yaguajay* belt along the north coast where platform carbonates accumulated, deep-water [http://www.merriam-webster.com/dictionary/pelagic pelagic] deposition continued during the [[Albian]] to [[Cenomanian]] (93 Ma; [[:file:St58OverviewFG29.JPG|Figure 9]]). In the south, volcanic activity contributed silica to the seawater, which led to the deposition of primary radiolarian [[chert]]s (Calabazar*, Carmita, and Santa Teresa) below the carbonate compensation depth. Whereas noncalcareous detritus was absent over most of the northern area, volcanic-derived clays became increasingly abundant toward the south (Santa Teresa* Formation). The Rana granodiorite high was still active, providing material for the Chaco Azul Formation. The position of the Vinas* type carbonates of the Guajaibon–Sierra Azul belt is problematic.

Except for the Yaguajay* belt along the north coast where platform carbonates accumulated, deep-water [http://www.merriam-webster.com/dictionary/pelagic pelagic] deposition continued during the [[Albian]] to [[Cenomanian]] (93 Ma; [[:file:St58OverviewFG29.JPG|Figure 9]]). In the south, volcanic activity contributed silica to the seawater, which led to the deposition of primary radiolarian [[chert]]s (Calabazar*, Carmita, and Santa Teresa) below the carbonate compensation depth. Whereas noncalcareous detritus was absent over most of the northern area, volcanic-derived clays became increasingly abundant toward the south (Santa Teresa* Formation). The Rana [https://wwwf.imperial.ac.uk/earthscienceandengineering/rocklibrary/viewglossrecord.php?gID=00000000073 granodiorite] high was still active, providing material for the Chaco Azul Formation. The position of the Vinas* type carbonates of the Guajaibon–Sierra Azul belt is problematic.

To the north, as during the Aptian–Albian, the shallow carbonate banks continued to be separated from the pelagic, deep-water sediments to the south by a zone of carbonate-derived clastics, which shifted progressively southward; carbonate [[turbidite]]s became increasingly abundant (Calabazar* and Mata* formations). In the Florida Straits, carbonate deposition did not keep up with subsidence as indicated by the increase in pelagic deposits, including [[chert]] (upper Casablanca Group).

To the north, as during the Aptian–Albian, the shallow carbonate banks continued to be separated from the pelagic, deep-water sediments to the south by a zone of carbonate-derived clastics, which shifted progressively southward; carbonate [[turbidite]]s became increasingly abundant (Calabazar* and Mata* formations). In the Florida Straits, carbonate deposition did not keep up with subsidence as indicated by the increase in pelagic deposits, including [[chert]] (upper Casablanca Group).