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Taitao granites and Taitao ophiolites would be mainly focused on in this part. Chile ridge is located west of the Taitao Peninsula, and the geology of Chile Ridge is closely associated with that of Taitao Peninsula. [1] [2] [3] Taitao ophiolite (Spanish: Ofiolita de Taitao) is an ophiolite in Taitao Peninsula of western Patagonia, Chile.
Taitao ophiolite, and other geological features, are associated with the triple junction. [5] As the Chile Rise has subducted beneath the South American Plate at the Taitao Peninsula, three ridge–continent collisions have occurred over the last 5 million years ago, approximately. [5]
Chile ridge is located west of the Taitao Peninsula, and the geology of Chile Ridge is closely associated with that of Taitao Peninsula. [ 5 ] [ 6 ] [ 4 ] Adakite is a felsic to intermediate rock and are usually calc-alkaline in composition.
The Chile triple junction, a geologic junction off the southern coast of Chile where the South American, Nazca and Antarctic tectonic plates meet. The Chile triple junction (or Chile margin triple junction) is a geologic triple junction located on the seafloor of the Pacific Ocean off Taitao and Tres Montes Peninsula on the southern coast of Chile.
The geology of Chile is a characterized by processes linked to subduction, ... At Taitao, the Chile triple junction and the Nazca plate subduct the South American plate.
The South American plate is a major tectonic plate which includes the continent of South America as well as a sizable region of the Atlantic Ocean seabed extending eastward to the African plate, with which it forms the southern part of the Mid-Atlantic Ridge.
Starting 4 million years ago the Chile Ridge collided with the Peru–Chile Trench. This collision originally occurred west of Tierra del Fuego, but has since moved northward towards the Taitao Peninsula. Farther south the interaction between the Scotia and South America plates gave rise to the Deseado and Magallanes-Fagnano faults. [20]
A triple junction, the Chile triple junction, [4] occurs on the seafloor of the Pacific Ocean off Taitao and Tres Montes Peninsula at the southern coast of Chile. Here, three tectonic plates meet: the Nazca plate, the South American plate, and the Antarctic plate.