| 41. | The underlying geology is of Old Red Sandstone overlying marl, and processes of tie beams and buttresses.
|
| 42. | The site overlies Old Red Sandstone.
|
| 43. | On the eastern side of the county the Dalradian schists are covered unconformably by the Old Red Sandstone.
|
| 44. | The rocks of the Stratheden Group have also previously been referred to as the Upper Old Red Sandstone.
|
| 45. | The Afon Dringarth flows across ground formed from the Old Red Sandstone laid down during the Devonian period.
|
| 46. | The Old Red Sandstone and the contemporary volcanics and marine sediments found in Devon originated from these processes.
|
| 47. | Indeed, Brown Clee is considered to be one of the best exposures of Old Red Sandstone that exists.
|
| 48. | It is of Old Red Sandstone.
|
| 49. | The bedrock of the island consists of flat layers of weathered Middle Old Red Sandstone, known as Rousay flags.
|
| 50. | In 1831, Fleming found some fossils which he recognized as fish in the Old Red Sandstone units at Fife.
|
