• When the Permian rocks of Arran were laid down. Arran was at a latitude of 13^oN and aeolian and river conditions prevailed, resulting in sandstones deposited in river systems and wind blown systems. The Permian rocks of Arran have been subdivided into two major units the Brodick and Lamlash Beds. The Brodick beds have been further subdivided into another two units The Brodick Breccia and The Corrie Sandstone. Going from oldest to youngest the Permian sub units can be listed as follows:

1. Corrie Sandstone (sub unit of the Brodick Beds), aeolian sandstones (Image 1).

2. Brodick Breccia (sub unit of the Brodick Beds), fluvial conglomerates.

3. Brodick Beds, aeolian and fluvial sandstones and conglmerates (Image 2).

4. Lamlash beds, aeolian and fluvial sandstones and conglmerates.

Image 1.  A junction between the Carboniferous river sands (on the left) and Permian wind blown sediments (on the right), on Corrie Shore.

Image 2.  Permian sandstones and conglomerates (Brodick Beds), exposed on Brodick shore.

The lower fine grained sandstone beds are displaying cross-bedding.

Image 3.  Permian sandstones (Lamlash Beds), exposed on Clauchlands shore. The Holy Isle is in the background.