| Graham Seamount | |
|---|---|
  Graham Seamount Location of Graham Seamount | |
| Summit depth | 1,474 m (4,836 ft) |
| Location | |
| Location | North Pacific Ocean |
| Coordinates | 53°14′N134°31′W / 53.233°N 134.517°W Coordinates: 53°14′N134°31′W / 53.233°N 134.517°W [1] |
| Country | Canada |
| Geology | |
| Type | Submarine volcano |
The Graham Seamount is a seamount located in the Pacific Ocean off the coast of Haida Gwaii, British Columbia, Canada.
Lōʻihi Seamount is an active submarine volcano about 22 mi (35 km) off the southeast coast of the island of Hawaii. The top of the seamount is about 3,200 ft (975 m) below sea level. This seamount is on the flank of Mauna Loa, the largest shield volcano on Earth. Lōʻihi, meaning "long" in Hawaiian, is the newest volcano in the Hawaiian–Emperor seamount chain, a string of volcanoes that stretches about 3,900 mi (6,200 km) northwest of Lōʻihi. Unlike most active volcanoes in the Pacific Ocean that make up the active plate margins on the Pacific Ring of Fire, Lōʻihi and the other volcanoes of the Hawaiian–Emperor seamount chain are hotspot volcanoes and formed well away from the nearest plate boundary. Volcanoes in the Hawaiian Islands arise from the Hawaii hotspot, and as the youngest volcano in the chain, Lōʻihi is the only Hawaiian volcano in the deep submarine preshield stage of development.
Mathews Tuya is a tuya in northcentral British Columbia. It is one of the six tuyas close to Tuya Lake. It has been partly glaciated and Ar-Ar geochronology shows that is it about 730,000 years old. It mainly comprises palagonitized tephra but also has a few dykes and jointed lava flows on its flanks. The top still has flat-lying lava flows erupted after the tephra pile grew above the surface of the enclosing lake. The other volcanoes in the area include Tuya Butte, South Tuya and Ash Mountain. The volcanoes in the region form part of the Northern Cordilleran Volcanic Province.
Bowie Seamount is a large submarine volcano in the northeastern Pacific Ocean, located 180 km (110 mi) west of Haida Gwaii, British Columbia, Canada.
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 200 km (124 mi) northwest of Vancouver Island and south of the Haida Gwaii archipelago The two seamounts are members of the Kodiak-Bowie Seamount chain, rising 500 m (1,640 ft) to 700 m (2,297 ft) above the mean level of the northeastern Pacific Ocean and is a seismically active site southwest of the southern end of the Queen Charlotte Fault. They are named after Canadian geologist John Tuzo Wilson.
The Explorer Seamount is a seamount located in the Pacific Ocean off the coast of British Columbia, Canada. It is on the Explorer Ridge, a tectonic spreading centre that separates the Pacific and Explorer plates and so the volcanism is rift-related. It is the namesake of the Explorer Ridge.
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 Seamount chain, a chain of seamounts in southeastern Gulf of Alaska stretching from the Aleutian Trench in the north to Bowie Seamount in the south.
The Oshawa Seamount is a seamount located in the Pacific Ocean off the coast of Haida Gwaii, British Columbia, Canada.
The Dellwood Seamounts are a seamount range located in the Pacific Ocean northwest of Vancouver Island, British Columbia, Canada. They are also known as the Dellwood Seamount Range or the Dellwood Seamount Chain.
The Tucker Seamount is a seamount located in the Pacific Ocean off the coast of northern Vancouver Island, British Columbia, Canada.
The Chelan Seamount is a seamount located in the Pacific Ocean off the coast of northern Vancouver Island, British Columbia, Canada.
The Seminole Seamount is a seamount located in the Pacific Ocean off the coast of northern Vancouver Island, British Columbia, Canada.
The Union Seamount is a seamount located in the Pacific Ocean off the coast of northern Vancouver Island, British Columbia, Canada.
The Union Seamount is a seamount located in the Pacific Ocean off the coast of northern Vancouver Island, British Columbia, Canada.
The Heck Seamount is a seamount located in the Pacific Ocean off the coast of central Vancouver Island, British Columbia, Canada.
Mount Kinch is a volcanic knob in southwestern British Columbia, Canada, located 79 km (49 mi) east of Rivers Inlet. It is almost completely ice-covered.
The volcanology of Eastern Canada includes the hundreds of volcanic areas and extensive lava formations in Eastern Canada. The region's different volcano and lava types originate from different tectonic settings and types of volcanic eruptions, ranging from passive lava eruptions to violent explosive eruptions. Eastern Canada has very large volumes of magmatic rock called large igneous provinces. They are represented by deep-level plumbing systems consisting of giant dike swarms, sill provinces and layered intrusions. The most capable large igneous provinces in Eastern Canada are Archean age greenstone belts containing a rare volcanic rock called komatiite.
Volcanism of Western Canada has produced lava flows, lava plateaus, lava domes, cinder cones, stratovolcanoes, shield volcanoes, greenstone belts, submarine volcanoes, calderas, diatremes and maars, along with examples of more less common volcanic forms such as tuyas and subglacial mounds.
Hecate Strait and Queen Charlotte Sound Glass Sponge Reefs Marine Protected Area is a 2,410-square-kilometre marine protected area located in Hecate Strait and Queen Charlotte Sound off the North Coast of British Columbia, Canada. The marine protected area was established in February 2017 with the goal of conserving the biological diversity, structural habitat, and ecosystem function of four glass sponge reefs. These reefs were the first discovered living specimens and are the largest glass sponge reefs in the world.
Scott Islands Marine National Wildlife Area is a National Wildlife Area off the northwestern tip of Vancouver Island in British Columbia, Canada. Covering an area of 11,570.65 km (7,189.67 mi), it is the second largest protected area in British Columbia after Offshore Pacific Seamounts and Vents Closure and is the largest national wildlife area in Canada.
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