Stewartry Group
| Stewartry Group | |
|---|---|
| Stratigraphic range: Cisuralian | |
Doweel Breccia over Locharbriggs Sandstone | |
| Type | Group |
| Sub-units | Locharbriggs Sandstone Formation, Doweel Breccia Formation (Dumfries Basin), Corncockle Sandstone Formation (Lochmaben Basin), Thornhill Sandstone Formation, Durisdeer Breccia Formation, Carron Basalt Formation (Thornhill Basin), Loch Ryan Formation, (Stranraer Basin) |
| Underlies | Top everywhere erosional |
| Overlies | Unconformity over Lower Paleozoic, or Carboniferous |
| Thickness | up to 610 m (2,000 ft), possibly up to 2,000 m (6,600 ft) |
| Lithology | |
| Primary | Sandstone, breccia |
| Other | Conglomerate, siltstone, basalt |
| Location | |
| Region | Southern Uplands |
| Country | Scotland |
| Type section | |
| Named for | Stewartry |
The Stewartry Group is a geological group, a stratigraphic unit of mainly breccias and sandstones of Permian age that are found in Southern Scotland. The sequence sits unconformably either on rocks of lower Paleozoic age or Carboniferous strata. The upper boundary of this unit is everywhere erosional. Rocks of the Stewartry Group form the fill of a series of extensional basins trending NW-SE to N-S across the Southern Uplands.