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The Scotia plate (Spanish: Placa Scotia) is a minor tectonic plate on the edge of the South Atlantic and Southern oceans. Thought to have formed during the early Eocene with the opening of the Drake Passage that separates Antarctica and South America, [2] it is a minor plate whose movement is largely controlled by the two major plates that surround it: the Antarctic plate and the South ...
Scotia plate – Minor oceanic tectonic plate between the Antarctic and South American plates – 1,600,000 km 2 (620,000 sq mi) Somali plate – Minor tectonic plate including the east coast of Africa and the adjoining seabed – 16,700,000 km 2 (6,400,000 sq mi) Sunda plate – Tectonic plate including Southeast Asia
The geology of South Georgia and the South Sandwich Islands is part of the largely submerged Scotia Ridge.The island of South Georgia is unusual among oceanic islands for having pre-Cretaceous sedimentary rocks underlying much of the island and a significant portion of felsic igneous rocks.
The East Scotia Ridge (ESR), the South Sandwich Islands (SSI), and the South Sandwich Trench (SST) are also visible. The South Sandwich Trench is a deep arcuate trench in the South Atlantic Ocean lying 100 kilometres (62 mi) to the east of the South Sandwich Islands .
Map of plate boundaries with velocities of plate motion. The South Sandwich plate or the Sandwich plate (not to be confused with a culinary sandwich plate) is a small tectonic plate bounded by the subducting South American plate to the east, the Antarctic plate to the south, and the Scotia plate to the west. The plate is separated from the ...
The Scotia Sea is a sea located at the northern edge of the Southern Ocean at its boundary with the South Atlantic Ocean. It is bounded on the west by the Drake Passage and on the north, east, and south by the Scotia Arc, an undersea ridge and island arc system supporting various islands. The sea sits atop the Scotia Plate.
The easterly edge is a divergent boundary with the African plate; the southerly edge is a complex boundary with the Antarctic plate, the Scotia plate, and the Sandwich Plate; the westerly edge is a convergent boundary with the subducting Nazca plate; and the northerly edge is a boundary with the Caribbean plate and the oceanic crust of the ...
The 7.5 M w foreshock was located at a depth of 47 km, placing it within the lower half of the lithosphere of the South American Plate, and it is likely to have been caused by compressional forces due to the downward bending of the plate. [7] The mainshock occurred about 3 minutes later at a depth of approximately 56 km and 90 km to the south.