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Edziza obsidian found in coastal areas of southeast Alaska. Edziza obsidian is a naturally formed volcanic glass found at the Mount Edziza volcanic complex in northwestern British Columbia, Canada. It occurs in at least four geological formations of the volcanic complex and was widely used by indigenous peoples during the pre-Columbian era.
Successive eruptions eventually built the volcanic pile above lake level to form a small temporary island that produced subaerial lava flows and lava fountains. [109] The result of this volcanism was the creation of Pillow Ridge on the northwestern flank of Mount Edziza, so-named for its exposures of pillow lava.
Mayor Island / Tūhua Native name: Tūhua (Māori) Mayor Island / Tūhua as seen from Mount Maunganui Mayor Island / Tūhua Show map of New Zealand Mayor Island / Tūhua Show map of North Island Geography Location Bay of Plenty, North Island, New Zealand Coordinates 37°17′S 176°15′E / 37.283°S 176.250°E / -37.283; 176.250 Area 13 km 2 (5.0 sq mi) Highest elevation 355 m ...
Obsidian Ridge is a volcanic mountain ridge in northwestern British Columbia, Canada, located on the south side of Artifact Creek at the southeast end of Mount Edziza Provincial Park. It was named on January 2, 1980 by the Geological Survey of Canada for its high quality obsidian .
The source of obsidian for cultures inhabiting the territory of and around Greece was the island of Milos; the Starčevo–Körös–Criș culture obtained obsidian from sources in Hungary and Slovakia, while the Cardium-Impresso cultural complex acquired obsidian from the island outcrops of the central Mediterranean.
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They formed from viscous lava rising in a volcanic vent [16] 250 m (820 ft) wide [11] Obsidian Butte is surrounded by a lava flow, and Mullet Island has a characteristic "onion-skin" foliation. [9] On Red Hill, there is a quarry , [ 17 ] a marina , and a trailer park , [ 18 ] and Obsidian Butte has been extensively quarried, to the point that ...
Hawaii's Kilauea volcano is erupting in a remote part of Hawaii Volcanoes National Park that is closed to the public. ... KÄ«lauea makes up the southeastern side of the Big Island of Hawaii and ...