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The Farallon plate subducted under North America from the late Mesozoic, while spreading between the Pacific and Farallon plates was initiated 190 Ma and lasted until the break-up of the Farallon plate 23 Ma. During the Cenozoic the Farallon plate broke up along the eastern Pacific margin into the Kula, Vancouver/Juan de Fuca, and Cocos plates.
The Pacific plate is an oceanic tectonic plate that lies beneath the Pacific Ocean. At 103 million km 2 (40 million sq mi), it is the largest tectonic plate. [2] The plate first came into existence as a microplate 190 million years ago, at the triple junction between the Farallon, Phoenix, and Izanagi plates. The Pacific plate subsequently grew ...
Northward propagation of the East Pacific Rise into the North American plate initiates rifting off of the Baja California peninsula. 4 Ma Pliocene Sierra Nevada begins to rise. 3.5 Ma Pliocene The Pacific plate changes its direction of motion about 11 degrees east of its previous heading, from northwest to the present northwest by north.
Relative velocity vectors of Pacific, Farallon, and Kula plates 55 million years ago (Black represents present-day land area). The Pacific-Farallon Ridge was a spreading ridge during the Late Cretaceous that extended 10,000 km in length and separated the Pacific Plate to the west and the Farallon Plate to the east.
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Amasia, 100 million years in the future [citation needed]. Amasia is a possible future supercontinent which could be formed by the merger of Asia and the Americas.The prediction relies mostly on the fact that the Pacific Plate is already subducting under Eurasia and the Americas, a process which if continued will eventually cause the Pacific to close. [1]
The Louisville hotspot chain passes through the western and eastern branches of the Wishbone scarp and while the seamounts show no compositional change as they cross the scarps, [2] the East Wishbone scarp crossing point is associated with a distinct decrease in the volume of the younger seamount eruptives from that point east into the Pacific ...
The Kaikōura Orogeny is a New Zealand orogeny that has given birth to the Southern Alps.It began 25 million years ago along the Alpine Fault.. In this orogeny, the Southern Alps are being formed because the Pacific Plate is colliding with the Australian Plate, with a predominant oblique dextral motion, but a minor component of thrust faulting.