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Kostal Cone

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Cinder cone in Wells Gray Provincial Park, British Columbia, Canada
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Kostal Cone
Kostal Cone
Highest point
Elevation1,440 m (4,720 ft)
Prominence190 m (620 ft)
CoordinatesCA-BC52°10′N119°57′W / 52.167°N 119.950°W /52.167; -119.950
Geography
Kostal Cone is located in British Columbia
Kostal Cone
Kostal Cone
Location in British Columbia
Map
Interactive map of Kostal Cone
LocationBritish Columbia, Canada
DistrictKamloops Division Yale Land District
Parent rangeCariboo Mountains
Topo mapNTS 83D4Murtle Lake
Geology
Rock ageHolocene
Mountain typeCinder cone
Volcanic fieldWells Gray-Clearwater volcanic field
Last eruption1550 (?)

Kostal Cone, also calledKostal Volcano andFire Mountain, is a youngcinder cone inWells Gray Provincial Park in east-centralBritish Columbia,Canada. It rises from the northeast shore ofKostal Lake in theCariboo Mountains. With an elevation of 1,440 m (4,724 ft), Kostal Cone is one of the lowest volcanoes in theWells Gray-Clearwater volcanic field.

There has been activity at this site as recently as 7,600 years ago, though more likely less than 1,000 years ago. Kostal Cone is too young for the commonly usedpotassium-argon dating technique (usable on specimens over 100,000 years old), and no charred organic material forradiocarbon dating has been found. However, the uneroded structure of the cone with the existence of trees on its flanks and summit have it an area fordendrochronology studies, which reveals the growth of tree-ring patterns. Tree-growth data has revealed an age of 400 years for Kostal Cone,[1] making it the youngest volcano in the Wells Gray-Clearwater volcanic field and one of the youngest volcanoes in Canada.

Kostal Cone is made of fragmented and solidified lava calledcinder and its summit contains a bowl-shapedcrater. Kostal's cinders were ejected bylava fountain eruptions and accumulated around the volcano's vent in the shape of a cone when they fell back around its surroundings. Lava flows from Kostal's 400 BP eruption arebasaltic in composition and forms alava bed. It is an example of volcanic activity that has occurred in the Wells Gray-Clearwater volcanic field since thelast glacial period; others include the Dragon's Tongue lava flow fromDragon Cone just north of Kostal Cone and theFlourmill Volcanoes north ofMahood Lake.

See also

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References

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  1. ^Wood, Charles A.; Kienle, Jürgen, eds. (1990).Volcanoes of North America.Cambridge University Press. p. 137.ISBN 0-521-43811-X.
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