The United Kingdom's Massive Volcano; Glen Coe

Within the United Kingdom is a massive but largely hidden volcano. Although it is long extinct, its eruptions were responsible for the creation of unusual geologic formations which can be found near the town of Glen Coe. The volcano I am referring to is also called Glen Coe, which produced a series of exceptionally large eruptions during the very late Silurian Period. Today, much of this caldera and the surrounding landscape are located adjacent to a main road. Today's video will discuss this fascinating volcanic system.

Thumbnail Photo Credit: This work "GlenCoe1", is a derivative of a photo (resized, cropped, increased image brightness in darker & shadowed areas, increased image color saturation, text overlay) from "Scottish Highlands in the Winter", by: Arran Moffat, aaronmoffat, arran_moffat, 2013, Posted on Flickr, Flickr account link: https://www.flickr.com/photos/arran_m..., Photo link: https://www.flickr.com/photos/arran_m..., CC BY 2.0. "GlenCoe1" is used & licensed under CC BY 2.0 by    / geologyhub  

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Sources/Citations:
[1] British Geological Survey (used to get relation and names of rock units to one another within the caldera), CC BY SA 3.0.
[2] U.S. Geological Survey
[3] Roberts, John. (2007). Ignimbrite eruptions in the volcanic history of the glencoe Cauldron subsidence. Geological Journal. 5. 173 - 184. 10.1002/gj.3350050114.
[4] Dobson, David & Martinescu, Viorela. (2024). Magma mixing between rhyolite and pseudotachylite as the origin for the Glencoe ‘Flinty Crush Rock’. Scottish Journal of Geology. 60. 10.1144/sjg2023-016.
[5] Kokelaar, Peter. (2007). Friction melting, catastrophic dilation and breccia formation along caldera superfaults. Journal of The Geological Society - J GEOL SOC. 164. 751-754. 10.1144/0016-76492006-059.
[6] VEIs, dates/years, composition, tephra layer name, DRE estimates, and bulk tephra volume estimates for volcanic eruptions shown in this video which were assigned a VEI 4 or larger and occurred in the Holocene or Pleistocene are sourced from the LaMEVE database (British Geological Survey © UKRI), https://www2.bgs.ac.uk/vogripa/view/c..., Used with Permission
[7] Source of Volcanic Explosivity Index (VEI) methodology and criteria: Newhall, C. G., and Self, S. (1982), The volcanic explosivity index (VEI) an estimate of explosive magnitude for historical volcanism, J. Geophys. Res., 87(C2), 1231–1238, doi:10.1029/JC087iC02p01231. Accessed / Read by    / geologyhub   on Oct 5th, 2022.

0:00 Glen Coe Volcano
1:44 Silurian Period
2:33 Caldera
3:27 Caldera Forming Eruptions
4:17 Erosion