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.
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.
The Puerto Rico Bank (PRB) (Spanish: Banco de Puerto Rico), also known as the Puerto Rican Bank (PRB), is a carbonate platform and insular shelf comprising the archipelagos of Puerto Rico and the Virgin Islands, located between the Greater Antilles and the Lesser Antilles in the northeastern Caribbean. Last subaerially exposed from the Last Glacial Maximum in the Last Glacial Period of the Late Pleistocene Age to the Northgrippian Age of the Holocene Epoch, the bank connected Puerto Rico and the Virgin Islands into a single landmass until sea level rise fragmented it into the present-day islands between 10,000 and 7,000 years Before Present (8,050 and 5,050 years Before Common Era). It is within the Puerto Rico–Virgin Islands microplate between the North American plate and Caribbean plate.
The Virgin Islands (Spanish: Islas Vírgenes) is an archipelago between the North Atlantic Ocean and northeastern Caribbean Sea, located to the immediate east of the main island of Puerto Rico. It generally forms part of the Leeward Islands of the Lesser Antilles in the West Indies of the Caribbean region.
Geologically separated from the Lesser Antilles by the Anegada Passage and from the Greater Antilles by the Mona passage, all the islands except for Saint Croix lie on the same carbonate platform and insular shelf, known as the Puerto Rico Bank, and same tectonic plate, known as the Puerto Rico–Virgin Islands microplate.
The Puerto Rico Trench is located on the boundary between the North Atlantic Ocean and Caribbean Sea, parallel to and north of Puerto Rico, where the oceanic trench reaches the deepest points in the Atlantic Ocean. The trench is associated with a complex transition from the Lesser Antilles frontal subduction zone between the South American plate and Caribbean plate to the oblique subduction zone and the strike-slip transform fault zone between the North American plate and Caribbean plate, which extends from the Puerto Rico Trench at the Puerto Rico–Virgin Islands microplate through the Cayman Trough at the Gonâve microplate to the Middle America Trench at the Cocos plate.
Constituting the deepest points in the Atlantic Ocean, the trench is 810 kilometres (503 mi) long and has a maximum documented depth between 8,376 metres (27,480 ft) and 8,740 metres (28,675 ft). The deepest point is commonly referred to as the Milwaukee Deep, with the Brownson Deep naming the seabed surrounding it. However, more recently, the latter term has also been used interchangeably with the former to refer to this point. The exact point was identified by the DSSV Pressure Drop using a state-of-the-art Kongsberg EM124 multibeam sonar in 2018, and then directly visited and its depth verified by the crewed submersible Deep-Submergence Vehicle DSV Limiting Factor (a Triton 36000/2 model submersible) piloted by Victor Vescovo.
The Spanish Virgin Islands (Spanish: Islas Vírgenes Españolas), formerly called the Passage Islands (Spanish: Islas del Pasaje), commonly known as the Puerto Rican Virgin Islands (Spanish: Islas Vírgenes Puertorriqueñas), consist of the islands of Vieques and Culebra, which are administratively part of the archipelago of Puerto Rico as municipalities. Located between the main island of Puerto Rico and the U.S. Virgin Islands in the northeastern Caribbean, the islands are geographically part of the archipelago of the Virgin Islands in the Leeward Islands of the Lesser Antilles.
Geologically separated from the Greater Antilles island of Hispaniola by the Mona Passage and from the Lesser Antilles island arc by the Anegada Passage, the main island of Puerto Rico, the Spanish Virgin Islands of Vieques and Culebra, the British Virgin Islands, and the U.S. Virgin Islands except for the southernmost island of Saint Croix, all lie on the same carbonate platform and insular shelf, the Puerto Rico Bank, between the North Atlantic Ocean and the Caribbean Sea. The archipelagos of Puerto Rico and the Virgin Islands except for Saint Croix also lie on the same tectonic plate, the Puerto Rico–Virgin Islands microplate.