The Cheakamus Valley basalts are part of what southwestern British Columbia formation?
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Cheakamus Valley basalts The Cheakamus Valley basalts are a sequence of basaltic lava flows along the Cheakamus River in southwestern British Columbia, Canada. They are part of the Garibaldi section of the Cascade Volcanic Arc and were produced during an episode of volcanic eruptions from an unknown vent. The latest basaltic eruption deposited wood in lacustrine sediments under the lava flows that have been dated 34,200 ± 800 years old. These youngest lavas form isolated ridges above the older glaciated Cheakamus Valley basalts and were described as "esker-like" by Canadian volcanologist Bill Mathews.
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Cascade Volcanoes The Cascade Volcanoes (also known as the Cascade Volcanic Arc or the Cascade Arc) are a number of volcanoes in a volcanic arc in western North America, extending from southwestern British Columbia through Washington and Oregon to Northern California, a distance of well over 700 mi . The arc has formed due to subduction along the Cascadia subduction zone. Although taking its name from the Cascade Range, this term is a geologic grouping rather than a geographic one, and the Cascade Volcanoes extend north into the Coast Mountains, past the Fraser River which is the northward limit of the Cascade Range proper.
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Kingsvale Formation The Kingsvale Formation is a geologic formation in British Columbia. It preserves fossils dating back to the Cretaceous period.
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Miette Group The Miette Group is a geologic group in British Columbia. It preserves fossils dating back to the Ediacaran period.
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Little Ring Mountain Little Ring Mountain, also called Little Ring Peak, is a tuya in the Pacific Ranges of the Coast Mountains in southwestern British Columbia, Canada. It lies at the head of the Squamish and Soo Rivers. Part of the Mount Cayley volcanic field, its most recent eruption most likely occurred during the Fraser Glaciation.
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Cone Glacier Volcano Cone Glacier Volcano is a cinder cone in the Boundary Ranges of the Coast Mountains in northwestern British Columbia, Canada. It is part of the Iskut-Unuk River Cones group and last erupted during the Holocene period. Cone Glacier contains two arms that surround the volcano.
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South Tuya South Tuya, also called Southern Tuya, is a tuya clustered around Tuya Lake in the Northern Cordilleran Volcanic Province in British Columbia, Canada. The base of South Tuya comprises hyaloclastite and pillow lava indicating that the volcano formed beneath a large lake or beneath ice.
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Mission Valley Formation The Mission Valley Formation is a marine sandstone geologic formation in the Mission Valley region of southwestern San Diego County in Southern California.
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Nanaimo Formation The Nanaimo Formation is a geologic formation in Washington (state). It preserves fossils dating back to the Cretaceous period.
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Boulder Creek Formation The Boulder Creek Formation is a geologic formation in northeastern British Columbia. It was named for a tributary to Commotion Creek in the Pine Pass area by E.M. Spieker in 1921. At one time considered to be a member of the Commotion Formation, it was elevated to formation status by D.F. Stott in 1982.
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Carmacks Group The Carmacks Group is a Late Cretaceous volcanic group in southwest-central Yukon, Canada, located between the communities of Dawson City and Whitehorse. It consists of flood basalts, coarse volcaniclastic rocks and sandy tuffs interbedded with subordinate andesite and basaltic lava flows. It has been interpreted to be a displaced portion of the Yellowstone hotspot track that was formed 70 million years ago.
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Ash Mountain (British Columbia) Ash Mountain is the highest summit in the Tuya Range of the Stikine Ranges in northcentral British Columbia, Canada, located immediately north of High Tuya Lake at the north end of Tuya Mountains Provincial Park. It is one of the six tuyas clustered close to Tuya Lake. The base of the volcano comprises pillow lava and hyaloclastite indicating that the volcano formed beneath ice or under a large lake. The volcano comprises loose debris as well as dikes of basaltic rock that intruded into the volcanic pile. Other tuyas in the area include Tuya Butte, South Tuya and Mathews Tuya, although most of the group of tuyas are unnamed.
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Peril Formation The Peril Formation is a geologic formation in British Columbia. It preserves fossils dating back to the Triassic period.
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Camp Hill (British Columbia) Camp Hill is a cinder cone in northern British Columbia, Canada. It is thought to have last erupted in the Holocene period.
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Kulthieth Formation The Kulthieth Formation is a geologic formation in Yukon. It preserves fossils dating back to the Paleogene period.
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Lone Butte (British Columbia) Lone Butte is a low, steep-sided mesa butte or volcanic plug in southern British Columbia, Canada, located on the southern Cariboo Plateau to the southeast of 100 Mile House. It is composed of columnar basalt that formed within a prehistoric volcano six million years ago. It is part of the geological formation known as the Chilcotin Group, which lies in between the Pacific Ranges of the Coast Mountains and the mid-Fraser River. BCWireless Ltd uses Lone Butte as one of its main access point for Broadband Internet distribution.
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Cinder Cone (British Columbia) Cinder Cone is a cinder cone with a small crater on the west side of the Helm Glacier in Garibaldi Provincial Park in British Columbia, Canada. Cinder Cone is surrounded by cinder flats and its crater is filled with melt water during the summer. Cinder Cone is eroded easily by melt water during the spring, washing the pyroclastics into the Valley of Desolation. Cinder Cone produced a 9 km long lava flow during the early Holocene.
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Wolverine Formation The Wolverine Formation is a geological formation in central Yukon, Canada. It consists of a lava flow in the Fort Selkirk Volcanic Field of the Northern Cordilleran Volcanic Province that was erupted during the Pleistocene period.
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Klondike Mountain Formation The Klondike Mountain Formation is an early Eocene geological formation located in the northeast central area of Washington State. The formation, named for the type location designated in 1962, Klondike Mountain north of Republic, Washington, is composed of volcanic rocks in the upper unit and volcanics plus lacustrine (lakebed) sedimentation in which a lagerstätte with exceptionally well-preserved plant and insect fossils has been found, along with fossil epithermal hot springs.
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Bowser Lake Formation The Bowser Lake Formation is a geologic formation in British Columbia. It preserves fossils dating back to the Jurassic period.
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Ma Butte Formation The Ma Butte Formation is a stratigraphic unit of Early Cretaceous (Albian) age in the Western Canada Sedimentary Basin. It was named for Ma Butte, a mountain north of Coleman, Alberta, by J.R. McLean in 1980. It is present in the foothills of southwestern Alberta and it contains plant fossils.
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Chancellor Group The Chancellor Group is a geologic group in British Columbia. It preserves fossils dating back to the Cambrian period.