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Viewing website implies consent to set cookies on your computer. Full details Swaledale and Arkengarthdale Archaeology Group
Registered Charitable Incorporated Organisation Number 1155775
SWAAG Honorary President:
Tim Laurie FSA

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 *****SWAAG_ID***** 839
 Date Entered 07/12/2014
 Updated on 07/12/2014
 Recorded by Tim Laurie
 Category Geological Record
 Record Type Geological HER
 Site Access Army Range
 Record Date 01/12/2014
 Location Feldom Army Range Area F2. Gayles Moor.
 Civil Parish Gayles
 Brit. National Grid NZ 111 069
 Altitude 270
 Geology Glacial drift over strata below the Middle Limestone.
 Record Name Two small glacial erratic boulders on Gayles Moor
 Record Description Two small glacial erratic boulders, one of Shap Granite the other of the remarkable Vale of Eden angular breccia rock known as the Brockram. These two erratics were recognised at elevation of 270m, in an erosion patch at a gateway. These two boulders are slightly below the altitudinal limit at 1000ft AOD (324m AOD) for the southern edge of the Stainmore Ice stream transporting Shap erratics from the source of this distinctive granite at Shap on the Western Fringe of the Lake District. Reference: (Raistrick, 1929). For further details and the Geological context of these very interesting and distinctive rocks, see the Descriptive Report from John Russell and the photo images below. Reference: Raistrick, A. 1929. 'The glaciation of Wensleydale, Swaledale and adjoining parts of the North Pennines'.Proceedings Yorkshire Geological Society, Vol 20 and Plate 20.
 Dimensions See photographs.
 Additional Notes Whereas Arthur Raistrick's Map defines the the southern edge of the ice stream carrying Shap Granite erratics across Stainmore as at 324m AOD on Feldom, further west this limit is at just 200m reflecting the absence of finds of these boulders from Barningham Moor and south of Dalton.A number of Shap Granites have subsequently been recognised on Barningham Low Moor and, notably, a solitary Shap Granite has been recorded below peat on the very edge of Barningham High Moor, at 430m elevation. See SWAAG Database Recird No 770, Image Nos 23 and 24 for photos of the Shap Granite boulder at Eel Hill on Barningham High Moor. This fact moves the recorded limit of the southern edge of the Stainmore Ice some three miles further south and its minimum elevation more than 200m higher. Further details of the archaeological sites visited by SWAAG Members during their visit to Gayles Moor on a misty December will be uploaded as the next SWAAG record.
 Image 1 ID 5888         Click image to enlarge
 Image 1 Description John Russell's descriptive summary of the geological contexts of Shap Granite and of the Brockram Breccia.
 Image 2 ID 5889         Click image to enlarge
 Image 2 Description The recorded limit of Shap Erratics on the southern edge of Teesdale at Feldom, at 1000ft (324m AOD).Extract from Raistrick 1929: Proceedings Yorkshire Geological Society, Vol 20 Plate 20.
 Image 3 ID 5890         Click image to enlarge
 Image 3 Description The Shap Granite boulder.
 Image 4 ID 5891         Click image to enlarge
 Image 4 Description The Brockram boulder.
 Image 5 ID 5892         Click image to enlarge
 Image 5 Description Find site of the two erratics with SWAAG Members on the visit to Gayles Moor on 1st December 2014
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