when did a volcano last erupt in canada
Volcanology of Canada The Volcano at the southern end of the Northern Cordilleran Volcanic Province just north of the Alaska-British Columbia boundary is probably the youngest in Canada.[126] It is a poorly built cinder cone made of loose volcanic ash, lapilli-sized tephra and volcanic bombs.[126][127] Lying above a remote mountain ridge in the Boundary Ranges of the Coast Mountains, it is responsible for lava flow eruptions in 1904 and older that traveled south 5 kilometres (3 mi) through river valleys where they crossed the border into the U.S. state of Alaska and dammed the Blue River, a short tributary of the Unuk River.[126] In doing so it formed several small lakes.[126] This eruption had a massive effect on fish, plant and animal inhabitants of the valley, but there is no record of its impact on people, most likely because people were not in the remote area.[2] The entire length of the lava flows are at least 22 kilometres (14 mi) and still contain the original lava features from when they were erupted, including pressure ridges and lava channels.[126][127] However, sections of the lava flows have collapsed into underlying lava tubes to form cavities.[127] Tephra and scoria from The Volcano covers adjacent mountain ridges and even through it is very young, it has been reduced by erosion from alpine glacial ice found in the heavily glaciated Coast Mountains.[127] The estimated volume of lava and ash from The Volcano is 2.2 km3 (1 cu mi).[127]
Mount Tambora Radiocarbon dating has established that Mount Tambora had erupted three times during the current Holocene Epoch before the 1815 eruption, but the magnitudes of these eruptions are unknown. Their estimated dates are 3910 BC ± 200 years, 3050 BC and 740 AD ± 150 years.[17] An earlier caldera was filled with lava flows starting from 43,000 years BP; two pyroclastic eruptions occurred later and formed the Black Sands and Brown Tuff formations, the last of which was emplaced between about 3890 BC and 800 AD.[18]
Is It Fall Yet? The film chronicles the characters' summer break between seasons four and five.
Corona Spectroscopy measurements indicate strong ionization and plasma temperature in excess of 1,000,000 kelvins,[1] much hotter than the surface of the Sun.