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How did the collision with the Bahamas platform change Caribbean tectonics?
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The collision between the Greater Antilles volcanic arc and the Bahamas limestone platform, which occurred between approximately 60 and 35 million years ago, served as a catalyst for a major reorganization of Caribbean tectonics.1
This tectonic shift resulted in several key changes:
- Plate Attachment: The collision zone, most notably Cuba, was sheared off from the Caribbean Plate and became fixed to the North American Plate.1
- Subduction Reestablishment: An east-dipping subduction zone was reestablished beneath Central America, effectively detaching the Caribbean Plate from the Pacific Ocean basin.1
- Volcanic Arc Formation: The continued subduction of the central Atlantic lithosphere beneath the eastern portion of the Caribbean Plate led to the development of the Lesser Antilles volcanic arc.1