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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***** 972
 Date Entered 12/01/2017
 Updated on 21/01/2017
 Recorded by Tim Laurie
 Category Geological Record
 Record Type Geological HER
 Site Access Public Access Land
 Record Date 06/01/2013
 Location Hunder Beck upstream from the pastures below Blackton YHA l to the confluence with Mawmon Sike
 Civil Parish Cotherstone
 Brit. National Grid NY 930 175
 Altitude 310m
 Geology Steep-sided stream cut ravine with fine exposures of Namurian strata of the Millstone Grit Series above the Upper Stonesdale Limestone including marine shales, a thin coal seam, the Mirk Fell Ironstone and the Upper Fell Top Limestone- the equivalent of the Knucton Shell Beds. Outcropping sandstone strata form several fine waterfalls. An impressive number of glacial erratic boulders, mostly of Shap Granite but also of volcanic ash and breccias. Several erratic slabs of the Brockram rock are to be seen in the bed of Hunder Beck. These erratics will be the subject of specific detailed recording at a later date.
 Record Name Hunder Beck upstream of Blackton Reservoir, Part One from the pastures below Blackton Reservoir upstream to Mawmon Sike- Namurian strata and glacial erratics of local and distant origine.
 Record Description See the Geology Section above. This Record (the first of three Parts) will provide an introductory photographic record of the very interesting geological strata, and waterfalls and a selection of the many glacial erratic boulders within the steep sided and dangerous ravines of Hunder Beck and its tributary streams, Mawmon Sike and Crawlaw Beck. These streams are located on pathless moorland south of the Blackton Reservoir and a short distance west of the Pennine Way. Access to Hunder Beck is via a short walk across moorland from the Parking Place at the end of the public road close to the Blackton YHA. The geological strata, glacial erratics, the fossil evidence and relict juniper, aspen and rowan woodland within the Hunder Beck, Mawmon Sike and Crawlaw Beck ravines will be the subject of specific detailed separate records to be uploaded following future revisits to confirm the necessary detail at a later date.
 Dimensions See photos
 Additional Notes These ravines are steep sided, pathless and very dangerous. Access to the bed of the streams and to the waterfalls is difficult and not advised.
 Image 1 ID 7132         Click image to enlarge
 Image 1 Description Hunder Beck. The Lower Falls. View upstream from the enclosed pastures east of the Blackton YHA on the line of the Pennine Way. One of the few areas in Teesdale of relict juniper scrub with additional planted junipers.
 Image 2 ID 7133         Click image to enlarge
 Image 2 Description Hunder Beck view higher upstream.
 Image 3 ID 7134         Click image to enlarge
 Image 3 Description Hunder Beck view higher upstream with Shap Granite boulder.
 Image 4 ID 7135         Click image to enlarge
 Image 4 Description Hunder Beck, view towards the Falls on Mawmon Sike with boulder of Shap Granite.
 Image 5 ID 7136         Click image to enlarge
 Image 5 Description Detail of one of the many Shap Granites in the bed of Hunder Beck.
 Image 6 ID 7137         Click image to enlarge
 Image 6 Description Water polished surface of small slab of volcanic breccia.
 Image 7 ID 7139         Click image to enlarge
 Image 7 Description Detail of the previous slab to show clasts.
 Image 8 ID 7140         Click image to enlarge
 Image 8 Description Small slab of Brockram in the bed of Hunder Beck with cobble of volcanic ash.
 Image 9 ID 7141         Click image to enlarge
 Image 9 Description Detail of last.
 Image 10 ID 7142         Click image to enlarge
 Image 10 Description Small boulder of Namurian Limestone with fine exposure of the colonial coral provisionally identified as Lithostrotian juncium.
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