The BGS Lexicon of Named Rock Units — Result Details
North Esk Formation [Not Same As NES]
| Computer Code: | NOE | Preferred Map Code: | litho |
|---|---|---|---|
| Status Code: | Full | ||
| Age range: | Tremadoc Series (O1) — Abereiddian Stage (O2) | ||
| Lithological Description: | Three lithologies with oceanic affinities are juxtaposed: (i) metabasalt, commonly spilitised, locally retaining pillows, metamorphosed to chlorite-schist over much of the outcrop; (ii) chert, brownish, pyritic in places, with cavities filled with yellow limonite; (iii) black slaty pelite rich in iron oxides, weathering reddish away from stream sections. | ||
| Definition of Lower Boundary: | No lower stratigraphical boundary identifiable. | ||
| Definition of Upper Boundary: | Unconformably overlain by Margie Formation. | ||
| Thickness: | Outcrop belt 600m wide: thickness unknown. | ||
| Geographical Limits: | Occurs in several fault-bounded pods just north of the Highland Boundary Fault between Glen Sannox (Arran) and Garron Point (Stonehaven). | ||
| Parent Unit: | Highland Border Complex (HBX) | ||
| Previous Name(s): | Volcanic Rocks And Black Shales (Highland Border Complex) [Obsolete Name And Code: Use NOE]
(DCHV)
Jasper and Green-Rock Series [Obsolete Name and Code: Use NOE] (-2340) |
||
| Alternative Name(s): | none recorded or not applicable | ||
| Stratotypes: | |||
| Type Section | Section in R. North Esk from Rocks of Solitude to the "Green Conglomerate", c. 1.25km south of Auchmull. | ||
| Reference(s): | |||
| Gould, D, 2001. Geology of the Aboyne district. Memoir of the British Geological Survey, Sheet 66W (Scotland). | |||
| Barrow, G. 1901. On the occurrence of Silurian (?) rocks in Forfarshire and Kincardineshire along the eastern border of the Highlands. Quarterly Journal of the Geological Society of London, Vol. 57, 328-345. | |||
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: | |||
| S030 S038 S066 S067 S066 | |||