| Sgurr of Eigg Pitchstone Formation | |
|---|---|
| Stratigraphic range: 58.72 ± 0.07 Ma | |
 Columnar pitchstone on An Sgurr | |
| Type | Geological formation |
| Overlies | Eigg Lava Formation |
| Thickness | up to 120 metres (390 ft) |
| Lithology | |
| Primary | Pitchstone |
| Other | Peperite |
| Location | |
| Region | Inner Hebrides |
| Country | Scotland |
| Type section | |
| Named for | Sgurr of Eigg |
The Sgurr of Eigg Pitchstone Formation is a volcanic formation of late Paleocene age exposed on Eigg, part of the Inner Hebrides in Scotland.[1] It is thought to represent a remnant of a much larger deposit that originated from the Skye igneous centre to the northeast, formed by an eruption, possibly with a VEI of 6 or greater.[2]
- ^ Brown, D.J.; Bell, B.R. (2013). "The emplacement of a large, chemically zoned, rheomorphic, lava-like ignimbrite: the Sgurr of Eigg Pitchstone, NW Scotland". Journal of the Geological Society. 170 (5): 753–767. doi:10.1144/jgs2012-147.
- ^ Troll, V.R.; Emeleus, C.H.; Nicoll, G.R.; Mattsson, T.; Ellam, R.M.; Donaldson, C.H.; Harris, C. (2019-01-24). "A large explosive silicic eruption in the British Palaeogene Igneous Province". Scientific Reports. 9 (1): 494. Bibcode:2019NatSR...9..494T. doi:10.1038/s41598-018-35855-w. ISSN 2045-2322. PMC 6345756. PMID 30679443.