The Info List - Pacific Plate

The Pacific Plate
Pacific Plate
is an oceanic tectonic plate that lies beneath the Pacific Ocean. At 103 million square kilometres (40,000,000 sq mi), it is the largest tectonic plate.[2] The Pacific Plate
Pacific Plate
contains an interior hot spot forming the Hawaiian Islands.[3] Hillis and Müller are reported to consider the Bird's Head Plate
Bird's Head Plate
to be moving in unison with the Pacific Plate.[4] Bird considers them to be unconnected.[5]


1 Boundaries 2 Paleo-geology of the Pacific Plate 3 References 4 External links

Boundaries[edit] The north-eastern side is a divergent boundary with the Explorer Plate, the Juan de Fuca Plate
Juan de Fuca Plate
and the Gorda Plate
Gorda Plate
forming respectively the Explorer Ridge, the Juan de Fuca Ridge
Juan de Fuca Ridge
and the Gorda Ridge. In the middle of the eastern side is a transform boundary with the North American Plate along the San Andreas Fault, and a boundary with the Cocos Plate. The south-eastern side is a divergent boundary with the Nazca Plate
Nazca Plate
forming the East Pacific Rise.[citation needed] The southern side is a divergent boundary with the Antarctic Plate forming the Pacific-Antarctic Ridge.[citation needed] The western side, the plate is bounded by the Okhotsk Plate
Okhotsk Plate
at the Kuril-Kamchatka Trench
Kuril-Kamchatka Trench
and the Japan Trench, forms a convergent boundary by subducting under the Philippine Sea Plate
Philippine Sea Plate
creating the Mariana Trench, has a transform boundary with the Caroline Plate, and has a collision boundary with the North Bismarck Plate.[citation needed] In the south-west, the Pacific Plate
Pacific Plate
has a complex but generally convergent boundary with the Indo-Australian Plate, subducting under it north of New Zealand
New Zealand
forming the Tonga Trench
Tonga Trench
and the Kermadec Trench. The Alpine Fault
Alpine Fault
marks a transform boundary between the two plates, and further south the Indo-Australian Plate
Indo-Australian Plate
subducts under the Pacific Plate
Pacific Plate
forming the Puysegur Trench. The southern part of Zealandia, which is to the east of this boundary, is the plate's largest block of continental crust.[citation needed] The northern side is a convergent boundary subducting under the North American Plate forming the Aleutian Trench
Aleutian Trench
and the corresponding Aleutian Islands.

Paleo-geology of the Pacific Plate[edit] The Pacific Plate
Pacific Plate
is almost entirely oceanic crust, but it contains some continental crust in New Zealand, Baja California, and coastal California.[3] The Pacific Plate
Pacific Plate
has the distinction of showing one of the largest areal sections of the oldest members of seabed geology being entrenched into eastern Asian oceanic trenches. A geologic map of the Pacific Ocean
Pacific Ocean
seabed shows not only the geologic sequences, and associated Ring of Fire zones on the ocean's perimeters, but the various ages of the seafloor in a stairstep fashion, youngest to oldest, the oldest being consumed into the Asian oceanic trenches. The oldest member disappearing by way of the Plate Tectonics
Plate Tectonics
cycle is early- Cretaceous
(145 to 137 million years ago).[6] All maps of the Earth's ocean floor geology show ages younger than 145 million years, only about 1/30 of the Earth's 4.55 billion year history.[citation needed]


^ http://geology.about.com/library/bl/blplate_size_table.htm

^ "SFT and the Earth's Tectonic Plates". Los Alamos National Laboratory. Retrieved 27 February 2013..mw-parser-output cite.citation font-style:inherit .mw-parser-output .citation q quotes:"""""""'""'" .mw-parser-output .citation .cs1-lock-free a background:url("//upload.wikimedia.org/wikipedia/commons/thumb/6/65/Lock-green.svg/9px-Lock-green.svg.png")no-repeat;background-position:right .1em center .mw-parser-output .citation .cs1-lock-limited a,.mw-parser-output .citation .cs1-lock-registration a background:url("//upload.wikimedia.org/wikipedia/commons/thumb/d/d6/Lock-gray-alt-2.svg/9px-Lock-gray-alt-2.svg.png")no-repeat;background-position:right .1em center .mw-parser-output .citation .cs1-lock-subscription a background:url("//upload.wikimedia.org/wikipedia/commons/thumb/a/aa/Lock-red-alt-2.svg/9px-Lock-red-alt-2.svg.png")no-repeat;background-position:right .1em center .mw-parser-output .cs1-subscription,.mw-parser-output .cs1-registration color:#555 .mw-parser-output .cs1-subscription span,.mw-parser-output .cs1-registration span border-bottom:1px dotted;cursor:help .mw-parser-output .cs1-ws-icon a background:url("//upload.wikimedia.org/wikipedia/commons/thumb/4/4c/Wikisource-logo.svg/12px-Wikisource-logo.svg.png")no-repeat;background-position:right .1em center .mw-parser-output code.cs1-code color:inherit;background:inherit;border:inherit;padding:inherit .mw-parser-output .cs1-hidden-error display:none;font-size:100% .mw-parser-output .cs1-visible-error font-size:100% .mw-parser-output .cs1-maint display:none;color:#33aa33;margin-left:0.3em .mw-parser-output .cs1-subscription,.mw-parser-output .cs1-registration,.mw-parser-output .cs1-format font-size:95% .mw-parser-output .cs1-kern-left,.mw-parser-output .cs1-kern-wl-left padding-left:0.2em .mw-parser-output .cs1-kern-right,.mw-parser-output .cs1-kern-wl-right padding-right:0.2em

^ a b Wolfgang Frisch; Martin Meschede; Ronald C. Blakey (2 November 2010). Plate Tectonics: Continental Drift and Mountain Building. Springer Science & Business Media. pp. 11–12. ISBN 978-3-540-76504-2.

^ Hillis, R. R.; Müller, R. D. (2003). Evolution and Dynamics of the Australian Plate. Boulder, CO: Geological Society of America. p. 363. ISBN 0-8137-2372-8.

^ Bird, P. (2003). "An updated digital model of plate boundaries". Geochemistry, Geophysics, Geosystems 4 (3): 1027. doi:10.1029/2001GC000252. http://peterbird.name/publications/2003_PB2002/2003_PB2002.htm.

^ Age of the Ocean Floor

External links[edit]

Wikimedia Commons has media related to Pacific tectonic plate.

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