Everything about R Union Hotspot totally explained
The
Réunion hotspot is a
volcanic hotspot which currently lies under the Island of
Réunion in the
Indian Ocean. The hot spot is believed to have been active for over 65 million years. A huge eruption of this hot spot 65 million years ago (MYA) is thought to have laid down the
Deccan Traps, a vast bed of
basalt lava that covers part of central
India, and opened a rift which separated India from the
Seychelles plateau. The Deccan Traps eruption coincided with the extinction of the
dinosaurs, and there's considerable speculation that the two events were related. As the Indian plate drifted north, the hot spot continued to punch through the plate, creating a string of volcanic islands and undersea plateaus. The
Laccadive Islands, the
Maldives, and the
Chagos Archipelago are
atolls resting on former volcanoes created 60-45 MYA that subsequently submerged below sea level. About 45 MYA the
mid-ocean rift crossed over the hot spot, and the hot spot passed under the
African Plate.
The hotspot appears to have been relatively quiet from 45-10 MYA, when activity resumed, creating the
Mascarene Islands, which include
Mauritius,
Réunion, and
Rodrigues. Mauritius and Rodrigues ridge were created 8-10 MYA, and Rodrigues and Réunion islands in the last two million years.
Piton de la Fournaise, a
shield volcano on the southeastern corner of Réunion, is one of the most active volcanoes in the world, erupting last on
4 April 2007 with lava reaching the sea.
Further Information
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