The BGS Lexicon of Named Rock Units — Result Details
Burn Of Mar Sandstone Formation
| Computer Code: | BMSA | Preferred Map Code: | notEntered |
|---|---|---|---|
| Status Code: | Full | ||
| Age range: | Abereiddian Stage (O2) — Caradoc Series (O4) | ||
| Lithological Description: | A medium to coarse-grained and weakly cleaved, lithic sandstone arenite, which contains chloritised grains, possibly after serpentine, and chromite grains. | ||
| Definition of Lower Boundary: | Not seen, as either faulted against younger or older rocks, or juxtaposed against sheared and silicified serpentinite. | ||
| Definition of Upper Boundary: | Not seen, as either faulted or unconformably overlain by Upper Devonian, Upper Old Red Sandstone Facies strata. | ||
| Thickness: | At least 200 m thick. | ||
| Geographical Limits: | Isolated slivers within the Highland Boundary Fault system between Loch Lomond (Balmaha) and Gualann. 1:50k sheets 38W (Ben Lomond) and 38E (Aberfoyle). | ||
| Parent Unit: | Highland Border Complex (HBX) | ||
| Previous Name(s): | Highland Border Sandstones [Obsolete Name and Code: Use BMSA]
(-2002)
Highland Border Grits [Obsolete Name And Code: Use BMSA] (HBGR) Loch Lomond Clastics [Obsolete Name and Code: Use BMSA] (-4479) |
||
| Alternative Name(s): | none recorded or not applicable | ||
| Stratotypes: | |||
| Type Section | Short stream section in the Burn of Mar, 800 m northeast from Conic Hill. | ||
| Type Area | Lakeside exposures around Arrochymore Point, on the eastern side of Loch Lomond. Bluck, 1992. | ||
| Reference(s): | |||
| Henderson, W G and Robertson, A H F, 1982. The Highland Border rocks and their relation to marginal basin development in the Scottish Caledonides. Quarterly Journal of the Geological Society of London, Vol.139, p.433-450. | |||
| Bluck, B J. 1992. Balmaha. 110-129 in Geological excursions around Glasgow and Girvan. Lawson, J D, and Weedon, D S (editors). Geological Society of Glasgow. | |||
| Anderson, J G C. 1946. The Geology of the Highland Border: Stonehaven to Arran. Transactions of the Royal Society of Edinburgh, Vol.61, 479-515. | |||
| Tremlett, WE. 1973. Excursion 9: Balmaha. 75-81 in Bluck, BJ. (editor) Excursion guide to the geology of the Glasgow district. Geological Society of Glasgow. | |||
| Curry, G B, Bluck, B J, Burton, C J, Ingham, J K, Siveter, D J, and Williams, A. 1984. Age, evolution and tectonic history of the Highland Border Complex, Scotland. Transactions of the Royal Society of Edinburgh: Earth Sciences, Vol. 75, 113-133. | |||
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: | |||
| S038 S038 S038 | |||