The BGS Lexicon of Named Rock Units — Result Details

Round How Breccia Member

Computer Code: RND Preferred Map Code: Rnd
Status Code: Full
Age range: Caradoc Series (O4) — Caradoc Series (O4)
Lithological Description: Poorly to well bedded volcaniclastic sandstone and breccia, some accretionary lapilli-tuff and tuff.
Definition of Lower Boundary: Rests sharply on andesite or breccia of the Haystacks Andesite Member. Locally overlies Birker Fell Andesite Formation (undivided andesite lavas and volcaniclastic rocks).
Definition of Upper Boundary: Overlain by undivided lavas (andesites) and volcaniclastic rocks of the Birker Fell Andesite Formation (undivided).
Thickness: About 250m
Geographical Limits: North Lake District, near Buttermere.
Parent Unit: Birker Fell Andesite Formation (BFA)
Previous Name(s): Round How Breccias (-4301)
Round How Member (-2397)
Alternative Name(s): none recorded or not applicable
Reference Section  Crags on Little Round How. 
McConnell, B J and Kneller, B C, 1993. The Lower Borrowdale Volcanic Group of Ennerdale and upper Borrowdale. British Geological Survey Technical Report WA/93/38. 
1:50K maps on which the lithostratigraphical unit is found, and map code used: