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The oldest rocks are approximately 190 million years old and are located at Sierra Bermeja in the southwest part of the island. These rocks may represent part of the oceanic crust and are believed to come from the Pacific Ocean realm. During the Carboniferous period, Puerto Rico was submerged. [2] Puerto Rico lies at the boundary between the ...
The youngest igneous rocks, in the Dominican Republic and Costa Rica, are from 63 Ma. That the CLIP originated in the Pacific is obvious because fragments of oceanic crust accreted to the margins of the Caribbean, for example on Hispaniola and Puerto Rico, contain fauna of Pacific provenance. [8]
The Puerto Rico–Virgin Islands microplate (PRVI), also known as the Puerto Rico–Virgin Islands block, is a tectonic microplate formed at the boundary zone between the Caribbean plate and the obliquely subducting North American plate.
Bathymetry of the northeast corner of the Caribbean plate showing the major faults and plate boundaries; view looking south-west. The main bathymetric features of this area include: the Lesser Antilles Volcanic Arc; the old inactive volcanic arc of the Greater Antilles (Virgin Islands, Puerto Rico, and Hispaniola); the Muertos Trough; and the Puerto Rico Trench formed at the plate boundary ...
Bathymetry of the northeast corner of the Caribbean Plate showing the major faults and plate boundaries; view looking south-west. The main bathymetric features of this area include: the Lesser Antilles volcanic arc; the old inactive volcanic arc of the Greater Antilles (Virgin Islands, Puerto Rico, and Hispaniola); the Muertos Trough; and the Puerto Rico Trench formed at the plate boundary ...
Topographic map of Puerto Rico, 1952. Puerto Rico is mostly mountainous with large coastal areas in the north and south. The main mountain range is called Cordillera Central (Central Mountain Range). The highest elevation in Puerto Rico, Cerro de Punta at 4,393 feet (1,339 m), [22] is located in this range.
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Topographic map of Puerto Rico showing the Cordillera Central and its two major subranges. The Puerto Rico Central Mountain Range or Cordillera Central is considered the largest of the three geographical and physiographic provinces of the island, along with the Karst regions and the coastal plains. [2]