Kodiak–Bowie Seamount Chain
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The Kodiak–Bowie Seamount chain, also called the Pratt–Welker Seamount chain and the Kodiak Seamounts is a
seamount A seamount is a large geologic landform that rises from the ocean floor that does not reach to the water's surface (sea level), and thus is not an island, islet or cliff-rock. Seamounts are typically formed from extinct volcanoes that rise abru ...
chain in the southeastern Gulf of Alaska stretching from the Aleutian Trench in the north to Bowie Seamount, the youngest volcano in the chain, which lies west of Haida Gwaii, British Columbia, Canada.The Bowie Seamount
Retrieved on 2007-09-02
The oldest volcano in the chain is the Kodiak Seamount. Although the Kodiak Seamount is the oldest extant seamount in the Kodiak-Bowie chain, the adjacent lower slope contains transverse scars indicating earlier subduction of seamounts. The Kodiak–Bowie Seamount chain is mostly extinct volcanoes that formed above the Bowie hotspot. This is a 100-to-150-km-wide morphological swell presumably of thickened hotspot generated crust, although there are no seismic refraction data across the swell to define crustal thickness. The crest of one such peak,
Patton Seamount Patton Seamount is a prominent seamount (Submarine volcano, underwater volcano) in the Cobb–Eickelberg Seamount chain in the Gulf of Alaska. Located east of Kodiak Island and reaching to within of the ocean surface, Patton is one of the large ...
originally formed off Washington state as a submerged volcano 33 million years ago. Over time, as the Pacific Plate moved steadily northwest, Patton Seamount has carried off the Bowie hotspot and into the Gulf of Alaska. New volcanoes were formed one after another over the hotspot, creating the Kodiak–Bowie Seamount chain. Explorations of the Kodiak–Bowie Seamount chain have shown that despite the fact that most of the seamounts were created by the Bowie hotspot, all are unique in their size, shape, and volcanic features. The seamounts teem with deep-sea corals, sponges, and fish. Recent expeditions to these seamounts using crewed submersibles and ROVs have discovered many marine species and have greatly expanded the knowledge of the range of deep sea corals in this region. For example, the Bowie Seamount is a biologically rich area with a dynamic and productive ecosystem. Because of this unique biological rich area, Bowie Seamount was declared a Pilot Marine Protected Area on December 8, 1998.Bowie Seamount Marine Protected Area
The Kodiak–Bowie seamount chain is at the northern triple junction between the Pacific, North American, and Juan de Fuca plates. Available age determinations on Kodiak and Giacomini Seamounts give an approximate average rate of movement along the chain of per year.


Volcanoes

Volcanoes in the chain include: * Kodiak Seamount (24 m.y. old)NOAA Ocean Explorer: Gulf of Alaska 2004
Retrieved on 2007-09-02
*
Giacomini Seamount Giacomini is a global producer of underfloor & ceiling heating and cooling systems, thermal energy metering and water & gasses regulation. Currently Giacomini employs over 1000 workers, exporting around 80% of its production in over 100 countri ...
(21 m.y. old) *
Pratt Seamount Pratt is an English surname. Notable people with the surname include: A–F * Abner Pratt (1801–1863), American diplomat, jurist, politician, lawyer * Al Pratt (baseball) (1847–1937), American baseball player * Andy Pratt (baseball) (born 1 ...
(age unknown) *
Welker Seamount Welker is a name originating from Germany, most commonly used as a surname. Welker has been used as a unisex given name, however this is less common than its use as a surname. Notable people with the name include: Surname: *David Welker (born 1964 ...
(15 m.y. old) *
Dickens Seamount Charles John Huffam Dickens (; 7 February 1812 – 9 June 1870) was an English writer and social critic. He created some of the world's best-known fictional characters and is regarded by many as the greatest novelist of the Victorian e ...
(~4 m.y. old) * Denson Seamount (18 .m.y. old) *
Durgin Seamount Durgin is a surname. Notable people with the surname include: *Bob Durgin, American radio personality *Calvin T. Durgin (1893–1965), U.S. Navy vice admiral *Doranna Durgin, American author * Ezra Durgin (1796–1863), American politician * Harri ...
* Brown Seamount * Quinn Seamount * Surveyor Seamount *
Peirce Seamount Peirce Seamount, also called Pierce Seamount, is a seamount located in the Pacific Ocean west of the Queen Charlotte Islands, British Columbia, Canada. It lies between Denson Seamount and Hodgkins Seamount and is member of the Kodiak-Bowie Se ...
*
Hodgkins Seamount Hodgkins Seamount is a seamount in the Kodiak-Bowie Seamount chain, located south of Pierce Seamount and north of Bowie Seamount. It has apparently experienced two generically different episodes of volcanism, separated by about 12 million years. ...
* Bowie Seamount (>0.7 m.y. old) *
Tuzo Wilson Seamounts The Tuzo Wilson Seamounts, also called J. Tuzo Wilson Knolls and Tuzo Wilson Knolls, are two young active submarine volcanoes off the coast of British Columbia, Canada, located northwest of Vancouver Island and south of the Haida Gwaii archipel ...


References

{{DEFAULTSORT:Kodiak-Bowie Seamount chain Oceanography Volcanic belts Seamounts of the Pacific Ocean Seamount chains Guyots