The BGS Lexicon of Named Rock Units — Result Details

New Orleans Conglomerate Formation

Computer Code: NWO Preferred Map Code: NWO
Status Code: Full
Age range: Lochkovian Age (DO) — Lochkovian Age (DO)
Lithological Description: Conglomerates and breccias composed of mainly lava boulders, with beds of red sandstone and siltstone, and localised tuff.
Definition of Lower Boundary: The top of the Glenramskill Formation where volcanic conglomerate overlies sandstones and mainly quartzitic conglomerate.
Definition of Upper Boundary: The base of the Bastard Sandstone Formation, where quartz-rich sandstone overlies predominantly volcanic conglomerate.
Thickness: About 890 m thick.
Geographical Limits: South of Campbeltown on the Kintyre Peninsula on Sheet 12, excluding Sanda and neighbouring islands.
Parent Unit: Arbuthnott-Garvock Group (ATGK)
Previous Name(s): none recorded or not applicable
Alternative Name(s): Creag Mhor Conglomerate
Stratotypes:
Type Section  Coast section on east coast of South Kintyre, from near Davaar House to approx 500m south of Achinhoan Head. 
Reference(s):
Friend, P F and MacDonald, R, 1968. Volcanic sediments, stratigraphy and tectonic background of the Old Red Sandstone of Kintyre, west Scotland. Scottish Journal of Geology, Vol.4, p.265-282. 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
S012