A video compares the Klamath oral account with the geological record of Mount Mazama. The volcano's climactic eruption and summit collapse occurred about 7,700 calendar years ago—6,900 BP in the cited USGS radiocarbon chronology. Magma withdrawal formed a caldera roughly 10 km wide and 1,200 m deep. The eruption produced an ash column estimated to reach roughly 50 km, with ash deposited as far as Canada. The video argues that the account's "fireballs" and event sequence reflect stages of the eruption and estimates about 250 generations of oral transmission. USGS sources document the eruption and collapse, but do not formally confirm the oral-history comparison.
Video compares Klamath oral history with Mount Mazama's 7,700-year-old collapse
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Key facts
- Mount Mazama's climactic eruption and caldera collapse occurred about 7,700 calendar years ago; the cited USGS paper's "6900 BP" is a radiocarbon age.
- Magma withdrawal produced a collapse caldera roughly 10 km in diameter and 1,200 m deep.
- The eruption produced an ash column estimated to reach roughly 50 km, with ash deposited as far as Canada.
- The Klamath account's "fireballs" are oral imagery; matching them to pyroclastic flows or specific volcanic stages is an interpretation.
- The video estimates about 250 generations of oral transmission. The linked USGS results document the geology but do not state that USGS formally confirmed the oral-history comparison.
Sources
arxiv.org
Linked in video description
sapiens.org
Linked in video description
pubs.usgs.gov
Linked in video description
craterlakeinstitute.com
Linked in video description
Eruptive history of Mount Mazama and Crater Lake ...pubs.usgs.gov
by CR Bacon · 1983 · Cited by 843 — Mount Mazama consisted of a glaciated complex of overlapping shields and stratovolcanoes, each of which was probably active for a comparatively short interval.
New USGS Geologic Map of Mount Mazama and ...craterlakeinstitute.com
Putting everything into digital form, writing all of the geologic map unit descriptions, adding the caldera floor geology, and USGS internal technical review ...
Mount Mazamaen.wikipedia.org
Its collapse, due to the eruption of magma emptying the underlying magma chamber, formed a caldera that holds Crater Lake (Giiwas in the Klamath language).
Geology and History Summary for Mount Mazama and ...usgs.gov
Mount Mazama is one of the major volcanoes of the Cascades Arc. Crater Lake is located within the collapsed caldera of Mount Mazama on the ...
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