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Mount Edziza, a stratovolcano in northwestern British Columbia A topographic map of Canada, showing elevations shaded from green (lower) to brown (higher). Volcanic activity is a major part of the geology of Canada and is characterized by many types of volcanic landform, including lava flows, volcanic plateaus, lava domes, cinder cones, stratovolcanoes, shield volcanoes, submarine volcanoes ...
The Distribution of Ancient Volcanic Rocks along the Eastern Border of North America. The Archean Red Lake greenstone belt in Northwestern Ontario consists of basaltic and komatiitic volcanics ranging in age from 2,925 to 2,940 million years old and younger rhyolite-andesite volcanics ranging in age from 2,730 to 2,750 million years old. [3]
The Mount Edziza volcanic complex (/ ə d ˈ z aɪ z ə / əd-ZY-zə; abbreviated MEVC) is a group of volcanoes and associated lava flows in northwestern British Columbia, Canada. Located on the Tahltan Highland , it is 40 kilometres (25 miles) southeast of Telegraph Creek and 85 kilometres (53 miles) southwest of Dease Lake .
More recent volcanic activity has created a northwest trending line of volcanic rocks called the Wrangell Volcanic Belt. [9] This volcanic belt lies largely in the U.S. state of Alaska, but extends across the Alaska-Yukon border into southwestern Yukon where it contains scattered remnants of subaerial lavas and pyroclastic rocks which are preserved along the entire eastern fringe of the ice ...
The faces of the basaltic lava flows and waterfalls remain vertical due to the nature of the basaltic lava flows. [4] Basaltic lava shrinks as it cools and forms vertical columns of rock called columnar basalt. [4] More recently, the southern end of the volcanic field has experienced continuous volcanic activity since the end of the last ice age.
It is believed to be the site of Canada's most recent volcanic eruption and lava flow, a geological disaster that killed an estimated 2,000 people. [4] The source of the eruption was the Tseax Cone. Large lava flows dammed the Nass River and destroyed two villages of the Nisga'a people around the year 1700. Lava beds rise as much as 12 metres ...
Dacitic lava flows or tuffs overlie these metamorphosed volcanic rocks along with intermediate volcanic breccias, and are overlain by rhyolite lava flows and tuffs. Acidic lava flow units range in thickness from 90 m (300 ft) to 900 m (3,000 ft) and are common in the Vermilion Lake and Link Lake areas. The felsic tuffs are normally altered and ...
Lava Forks Provincial Park is a provincial park in northern British Columbia, Canada. It is the site of Canada's most recent volcanic eruption, which occurred around 1904 at Lava Fork (see The Volcano ).
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