| An Sgùrr | |
|---|---|
 The Nose of Sgùrr, seen from the southeast | |
| Highest point | |
| Elevation | 393 m (1,289 ft) |
| Prominence | 393 m (1,289 ft) |
| Parent peak | none - HP Eigg |
| Listing | Marilyn, Hardy |
| Naming | |
| English translation | The (rocky) peak |
| Language of name | Gaelic |
| Pronunciation | Scottish Gaelic: [ən ˈs̪kuːrˠ] |
| Geography | |
| OS grid | NM463847 |
| Topo map | OS Landranger 39 |
An Sgùrr is the highest hill on the Inner Hebridean island of Eigg, Lochaber, Highland, Scotland. It was formed 58.72 ± 0.07 million years ago; [1] the result of one of the last eruptions of a volcano, the core of which now forms the Isle of Rùm. Thick viscous pitchstone lava of rhyodacitic composition [2] flowed out, filling a river valley. The lava cooled and formed column-like structures, similar to those at Giant's Causeway.
The surrounding basalt was softer than the pitchstone, and hence the valley became inverted, with the pitchstone withstanding the erosion far better than the surrounding rock. An Sgùrr is thus an inselberg. [3] The mountain appears most strikingly in the view of the eastern end, known as the Nose of Sgùrr.
The peak is most frequently climbed from the ferry terminal at Galmisdale on the southeast corner of Eigg. A rough track heads west, passing between the northern side of An Sgùrr and the shoreline. About three-quarters of the way along the side of the ridge there is a gully; a fairly easy scramble allows access to the summit ridge. The route now almost doubles back on itself, heading east to reach the summit, which is crowned by a trig point. The climb, from ferry terminal to the Nose of An Sgùrr and back, takes at least 4 hours.
An Sgùrr is also known as the Sgurr of Eigg.
References
- ^ Emeleus, C.H. and Bell, B.R. (2005) British Regional Geology: The Palaeogene Volcanic Districts of Scotland, 4th edition, Nottingham, British Geological Survey, page 45
- ^ Emeleus, C.H. and Bell, B.R. (2005) British Regional Geology: The Palaeogene Volcanic Districts of Scotland, 4th edition, Nottingham, British Geological Survey, page 77
- ^ Troll, Valentin R.; Emeleus, C. Henry; Nicoll, Graeme R.; Mattsson, Tobias; Ellam, Robert M.; Donaldson, Colin H.; Harris, Chris (24 January 2019). "A large explosive silicic eruption in the British Palaeogene Igneous Province". Scientific Reports. 9 (1): 494. doi: 10.1038/s41598-018-35855-w. ISSN 2045-2322. PMC 6345756. PMID 30679443.
External links
Media related to
An Sgùrr, Eigg at Wikimedia Commons
- Geology of Eigg
- Computer-generated virtual panoramas North South Index
| An Sgùrr | |
|---|---|
|
The Nose of Sgùrr, seen from the southeast | |
| Highest point | |
| Elevation | 393 m (1,289 ft) |
| Prominence | 393 m (1,289 ft) |
| Parent peak | none - HP Eigg |
| Listing | Marilyn, Hardy |
| Naming | |
| English translation | The (rocky) peak |
| Language of name | Gaelic |
| Pronunciation | Scottish Gaelic: [ən ˈs̪kuːrˠ] |
| Geography | |
| OS grid | NM463847 |
| Topo map | OS Landranger 39 |
An Sgùrr is the highest hill on the Inner Hebridean island of Eigg, Lochaber, Highland, Scotland. It was formed 58.72 ± 0.07 million years ago; [1] the result of one of the last eruptions of a volcano, the core of which now forms the Isle of Rùm. Thick viscous pitchstone lava of rhyodacitic composition [2] flowed out, filling a river valley. The lava cooled and formed column-like structures, similar to those at Giant's Causeway.
The surrounding basalt was softer than the pitchstone, and hence the valley became inverted, with the pitchstone withstanding the erosion far better than the surrounding rock. An Sgùrr is thus an inselberg. [3] The mountain appears most strikingly in the view of the eastern end, known as the Nose of Sgùrr.
The peak is most frequently climbed from the ferry terminal at Galmisdale on the southeast corner of Eigg. A rough track heads west, passing between the northern side of An Sgùrr and the shoreline. About three-quarters of the way along the side of the ridge there is a gully; a fairly easy scramble allows access to the summit ridge. The route now almost doubles back on itself, heading east to reach the summit, which is crowned by a trig point. The climb, from ferry terminal to the Nose of An Sgùrr and back, takes at least 4 hours.
An Sgùrr is also known as the Sgurr of Eigg.
References
- ^ Emeleus, C.H. and Bell, B.R. (2005) British Regional Geology: The Palaeogene Volcanic Districts of Scotland, 4th edition, Nottingham, British Geological Survey, page 45
- ^ Emeleus, C.H. and Bell, B.R. (2005) British Regional Geology: The Palaeogene Volcanic Districts of Scotland, 4th edition, Nottingham, British Geological Survey, page 77
- ^ Troll, Valentin R.; Emeleus, C. Henry; Nicoll, Graeme R.; Mattsson, Tobias; Ellam, Robert M.; Donaldson, Colin H.; Harris, Chris (24 January 2019). "A large explosive silicic eruption in the British Palaeogene Igneous Province". Scientific Reports. 9 (1): 494. doi: 10.1038/s41598-018-35855-w. ISSN 2045-2322. PMC 6345756. PMID 30679443.
External links
Media related to
An Sgùrr, Eigg at Wikimedia Commons
- Geology of Eigg
- Computer-generated virtual panoramas North South Index