The BGS Lexicon of Named Rock Units — Result Details
Ben Aigan Quartzite Member
Computer Code: | BAQU | Preferred Map Code: | SYMB |
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Status Code: | Full | ||
Age range: | Neoproterozoic Era (AZ) — Neoproterozoic Era (AZ) | ||
Lithological Description: | Quartzite and quartzose psammite, buff to grey, well-bedded with abundant micaceous interbeds. Locally recrystallised, hard and massive. | ||
Definition of Lower Boundary: | Base of quartzites (not seen, cut-out by fault system along valley of River Spey). | ||
Definition of Upper Boundary: | Top of quartzites, overlain by flaggy and schistose semipelites of the Findlater Flag Formation. | ||
Thickness: | c. 1250 m seen. | ||
Geographical Limits: | Between Rothes Fault and River Spey NE of Craigellachie and Old Red Sandstone unconformity at Cairnty, Mulben (Sheet 85E). | ||
Parent Unit: | Cullen Quartzite Formation (CUQU) | ||
Previous Name(s): | Ben Aigan Quartzite [Obsolete Name And Code: Use BAQU]
(DAAI)
Ben Aian Quartzite [Obsolete Name and Code: Use BAQU] (-3816) |
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Alternative Name(s): | none recorded or not applicable | ||
Stratotypes: | |||
Type Section | Allt Daley from source 1km NE of summit of Ben Aigan to edge of alluvium in Spey Valley. | ||
Reference(s): | |||
none recorded or not applicable | |||
1:50K maps on which the lithostratigraphical unit is found, and map code used: | |||
S085 |