Pillow Ridge

Last updated
Pillow Ridge
Highest point
Elevation 2,400 m (7,900 ft)
Coordinates 57°45′34″N130°39′6″W / 57.75944°N 130.65167°W / 57.75944; -130.65167
Geography
Location British Columbia, Canada
District Cassiar Land District
Parent range Tahltan Highland
Topo map NTS   104G15 Buckley Lake
Geology
Age of rock Pleistocene
Mountain type Subglacial mound
Type of rock Pillow Formation alkali basalt
Volcanic region Northern Cordilleran Province
Last eruption Pleistocene

Pillow Ridge is a ridge of the Tahltan Highland in northern British Columbia, Canada, located southeast of Telegraph Creek. It extends northwest from Mount Edziza in Mount Edziza Provincial Park. [1]

Contents

History

As its name suggests, Pillow Ridge was named on January 2, 1980 by the Geological Survey of Canada for the classic exposures of subaqueous pillow lava that form the ridge. [1]

Geology

Pillow Ridge is a volcanic feature associated with the Mount Edziza volcanic complex which in turn form part of the Northern Cordilleran Volcanic Province. It is a subglacial mound that formed in the Pleistocene period when this area was buried beneath glacial ice during the last ice age. [2]

See also

Related Research Articles

<span class="mw-page-title-main">Mount Edziza</span> Stratovolcano in British Columbia, Canada

Mount Edziza, sometimes called Edziza Mountain or Edziza Peak, is a stratovolcano in Cassiar Land District of northwestern British Columbia, Canada. It is located on the Big Raven Plateau of the Tahltan Highland which extends along the western side of the Stikine Plateau. The mountain has an elevation of 2,786 metres, making it the highest volcano of the Mount Edziza volcanic complex. However, it had an elevation of at least 3,396 metres before its original summit was likely destroyed by a violent, climactic eruption in the geologic past. Mount Edziza contains several lava domes, cinder cones and lava fields on its flanks, as well as an ice cap that is characterized by several outlet glaciers stretching out to lower altitudes. All sides of the mountain are drained by tributaries of Mess Creek and Kakiddi Creek which are situated within the Stikine River watershed.

<span class="mw-page-title-main">Spectrum Range</span>

The Spectrum Range, formerly called the Spectrum Mountains and the Rainbow Mountains, is a subrange of the Tahltan Highland in the Stikine Country of northwestern British Columbia, 20 km west of the Stewart-Cassiar Highway, south of Mount Edziza and north of the Arctic Lake Plateau. The Spectrum Range falls within Mount Edziza Provincial Park. The range is lightly glaciated, as compared to the other ranges to the west. It is accessible only by foot or via helicopter; there are no roads to the range.

The Pyramid, also called Pyramid Dome, is a young lava dome on the northeast flank of Mount Edziza in British Columbia, Canada. It represents several different styles of volcanic activity of the Mount Edziza volcanic complex, part of the Northern Cordilleran Volcanic Province. Its latest eruption occurred during the Pleistocene epoch.

Coffee Crater is a well-preserved cinder cone south of Mount Edziza, British Columbia, Canada. It was formed during the Holocene period. It is within the Snowshoe lava field, part of the Mount Edziza volcanic complex.

<span class="mw-page-title-main">Desolation Lava Field</span> Volcanic field in British Columbia, Canada

The Desolation Lava Field is a volcanic field associated with the Mount Edziza volcanic complex in British Columbia, Canada. It covers 150 km2 (58 sq mi) on the northern end of the Mount Edziza volcanic complex and is the largest area of the youngest lava flows. The longest lava flow from the field and the volcanic complex, is about 12 km (7.5 mi) long. Eve Cone, in the middle of the field, is one of the most symmetrical and best preserved cinder cones in Canada.

<span class="mw-page-title-main">Tsekone Ridge</span> Isolated ridge in Canada

Tsekone Ridge, also called Tsekone Peak and Black Knight Cone, is an isolated ridge on the Big Raven Plateau of the Tahltan Highland in northwestern British Columbia, Canada. It is located southeast of Telegraph Creek at the north side of Mount Edziza Provincial Park between Eve Cone and Mount Edziza.

<span class="mw-page-title-main">Cocoa Crater</span> Cinder cone in British Columbia, Canada

Cocoa Crater is a cinder cone in the Stikine Country of northwestern British Columbia, Canada. It is located 38 km southeast of Telegraph Creek and 8 m (26 ft) southwest of Mount Edziza. Cocoa Crater is one of the 30 cinder cones around the Mount Edziza complex that formed in the year 700. The ash around Cocoa Crater is quite deep, its summit is a jet black color and its summit is red. It is quite a different color from the brown color of Coffee Crater, which is to the south of Cocoa Crater.

Castle Rock is a volcanic plug located 13 km (8 mi) west of Iskut and 8 km (5 mi) northwest of Tuktsayda Mountain in British Columbia, Canada. Castle Rock is part of the Pacific Ring of Fire that includes over 160 active volcanoes and is in the Klastline Group of the Northern Cordilleran Volcanic Province and last erupted in the Pleistocene.

<span class="mw-page-title-main">Nahta Cone</span> Cinder cone in Canada

Nahta Cone is a cinder cone in northern British Columbia, Canada, located 69 km (43 mi) southwest of Tatogga, 2 km (1 mi) west of Wetalth Ridge and south of Telegraph Creek. It lies in the southwestern corner of Mount Edziza Provincial Park.

<span class="mw-page-title-main">Wetalth Ridge</span> Isolated ridge in Canada

Wetalth Ridge is an isolated ridge in northern British Columbia, Canada, located 74 km (46 mi) southwest of Tatogga and south of Telegraph Creek. It lies on the southwest side of Little Arctic Lake at the southwest corner of Mount Edziza Provincial Park.

Outcast Hill is an isolated hill in northern British Columbia, Canada, located southeast of Mess Lake. It lies at the southern end of Mount Edziza Provincial Park.

Ridge Cone is a cinder cone in northern British Columbia, Canada. It is thought to have last erupted in the Holocene period and is part of the Mount Edziza volcanic complex.

Cartoona Peak is a volcanic peak in northern British Columbia, Canada, located just southeast of Coffee Crater in Mount Edziza Provincial Park.

Tadeda Peak, also known unofficially as Tadeda Centre, is a volcanic peak in northern British Columbia, Canada, located just northeast of Raspberry Pass in Mount Edziza Provincial Park.

Sezill Volcano is a lava dome in Mount Edziza Provincial Park of northern British Columbia, Canada. It is thought to have formed and last erupted during the Miocene period. The volcano gets its name from being adjacent to Sezill Creek.

The Neck is a mountain in northwestern British Columbia, Canada, located in Mount Edziza Provincial Park. It is a volcanic feature of the Northern Cordilleran Volcanic Province that formed in the past 1.6 million years of the Pleistocene epoch.

Exile Hill is an isolated hill in the Spectrum Range of northern British Columbia, Canada, located southeast of Mess Lake. It lies at the southern end of Mount Edziza Provincial Park.

Tadekho Hill is an isolated hill in the Northern Interior of British Columbia, Canada, located 64 km (40 mi) southwest of Tatogga and 10 km (6 mi) southwest of Kitsu Peak. It lies at the southwestern end of Mount Edziza Provincial Park.

<span class="mw-page-title-main">Volcanic history of the Northern Cordilleran Volcanic Province</span>

The volcanic history of the Northern Cordilleran Volcanic Province presents a record of volcanic activity in northwestern British Columbia, central Yukon and the U.S. state of easternmost Alaska. The volcanic activity lies in the northern part of the Western Cordillera of the Pacific Northwest region of North America. Extensional cracking of the North American Plate in this part of North America has existed for millions of years. Continuation of this continental rifting has fed scores of volcanoes throughout the Northern Cordilleran Volcanic Province over at least the past 20 million years and occasionally continued into geologically recent times.

References

  1. 1 2 "Pillow Ridge". BC Geographical Names .
  2. "Catalogue of Canadian volcanoes: Pillow Ridge". Archived from the original on 2007-11-10. Retrieved 2008-05-02.