The BGS Lexicon of Named Rock Units — Result Details

Newtownbutler Limestone Member

Computer Code: NEWT Preferred Map Code: NEWT
Status Code: Full
Age range: Arundian Substage (CJ) — Arundian Substage (CJ)
Lithological Description: Grainstones, pale to medium grey, fine- to coarse-grained, oolitic, peloidal, bioclastic, quartz-clastic, bedded.
Definition of Lower Boundary: Not exposed - transition (probable) from dark grey crinoidal limestones (packstones) of parent Ballyshannon Limestone Formation.
Definition of Upper Boundary: Abrupt (probably disconformable) change from limestones to sandstone bed representive base of Mullynagowan Sandstone Member (basal member of Bundoran Shale Formation).
Thickness: About 10m
Geographical Limits: Newtownbutler area of south Co. Fermanagh, Northern Ireland.
Parent Unit: Ballyshannon Limestone Formation (BAL)
Previous Name(s): none recorded or not applicable
Alternative Name(s): none recorded or not applicable
Type Section  Stream section, upstream for 30m and downstream for 20m of lane bridge between Mockbeggar and Mullynagowan Townlands. 
Mitchell, W I, 1995. Geological description of the area around Lisnaskea and Newtownbutler, Co. Fermanagh, part of 1:50k geological sheet 57 (Lisnaskea). Technical report GSN/95/8. 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
none recorded or not applicable