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Episode 1322             Episode 1324
Episode 1323

Mount Takahe
Fri, 2020-Dec-18 01:11 UTC
Length - 2:22

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Welcome to featured Wiki of the Day where we read the summary of the featured Wikipedia article every day.

The featured article for Friday, 18 December 2020 is Mount Takahe.

Mount Takahe is a 3,460-metre-high (11,350 ft) snow-covered shield volcano in Marie Byrd Land, Antarctica, 200 kilometres (120 mi) from the Amundsen Sea. It is a c. 30-kilometre-wide (19 mi) mountain with parasitic vents and a caldera up to 8 kilometres (5 mi) wide. Most of the volcano is formed by trachytic lava flows, but hyaloclastite is also found. Snow, ice, and glaciers cover most of Mount Takahe. With a volume of 780 km3 (200 cu mi), it is a massive volcano; the parts of the edifice that are buried underneath the West Antarctic Ice Sheet are probably even larger. It is part of the West Antarctic Rift System along with eighteen other known volcanoes.

The volcano was active in the Quaternary. Radiometric dating has yielded ages of 300,000 years and less for its rocks; the fast-growing volcano reached its present height about 200,000 years ago. Several tephra layers encountered in ice cores at Mount Waesche and Byrd Station have been attributed to Mount Takahe, although some of them were later linked to eruptions of Mount Berlin instead. The tephra layers were formed by explosive or phreatomagmatic eruptions. Major eruptions took place around 17,700 years ago—possibly forming an ozone hole over Antarctica—and in the early Holocene. Mount Takahe's last eruption occurred about 7,600 years ago; there is no present-day activity.

This recording reflects the Wikipedia text as of 01:11 UTC on Friday, 18 December 2020.

For the full current version of the article, see Mount Takahe on Wikipedia.

This podcast is produced by Abulsme Productions based on Wikipedia content and is released under a Creative Commons Attribution-ShareAlike License.

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This has been Russell Standard. Thank you for listening to featured Wiki of the Day.

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