Editing Geology of the North Tyne and Saughtree - an excursion

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Continue to Saughtree and turn right at the T-junction [NY 561 967] on to the B6357. Cross a small stone bridge and notice further examples of landslipping on the drift slopes to the left. Cross a cattle grid and park in a lay-by, immediately after a stone bridge which crosses the stream to the left.
 
Continue to Saughtree and turn right at the T-junction [NY 561 967] on to the B6357. Cross a small stone bridge and notice further examples of landslipping on the drift slopes to the left. Cross a cattle grid and park in a lay-by, immediately after a stone bridge which crosses the stream to the left.
  
==== Locality 13, Dawston Burn [NY 568 981] ====
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==== Locality 13, Dawston Burn [NY 568 981] ====
  
This is the site of a BCR viaduct, demolished when the line was closed. Looking downstream from the bridge, outcrops dipping downstream at low angles are of Lower Border Group sandstones, possibly the equivalent of the Whita Sandstone of the Langholm area. These beds underlie the drift in the slopes to the right, but above the line of the old railway, scattered stream exposures are mainly in the O.R.S. The hills that form the northwest skyline (Saughtree Fell) are underlain by Silurian greywackes. The oldest rocks thus occupy the highest ground. The field relations in this area are obscure due to the lack of exposure but some outcrops of the O.R.S. have vertical bedding, suggesting faulting or '''monoclinal folding''', or both.
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This is the site of a BCR viaduct, demolished when the line was closed. Looking downstream from the bridge, outcrops dipping downstream at low angles are of Lower Border Group sandstones, possibly the equivalent of the Whita Sandstone of the Langholm area. These beds underlie the drift in the slopes to the right, but above the line of the old railway, scattered stream exposures are mainly in the O.R.S. The hills that form the northwest skyline (Saughtree Fell) are underlain by Silurian greywackes. The oldest rocks thus occupy the highest ground. The field relations in this area are obscure due to the lack of exposure but some outcrops of the O.R.S. have vertical bedding, suggesting faulting or monoclinal folding, or both.
  
The same succession is discontinuously exposed in the Dawston Burn for 1 km upstream of the bridge, but is difficult to see if the water is high. Unless the transport can follow, it may be best to examine the lower part of the section, return to the lay-by and then drive to Locality 14.
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The same succession is discontinuously exposed in the Dawston Burn for 1 km upstream of the bridge, but is difficult to see if the water is high. Unless the transport can follow, it may be best to examine the lower part of the section, return to the lay-by and then drive to Locality 14.
  
As in the Caddroun Burn, the beds dip downstream and older strata are encountered upstream. The Lower Border Group is represented mainly by sandstone, although there are a few exposures of shales. A dyke which may be the extension of the Hudshouse Dyke cuts the section. The Birrenswark Lavas crop out approximately 400 m upstream of the bridge and may be traced up the slope southeast of the road. Sandstones of the Upper O.R.S. underlie the lavas but differ little in lithology from some of the Carboniferous sandstones.
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As in the Caddroun Burn, the beds dip downstream and older strata are encountered upstream. The Lower Border Group is represented mainly by sandstone, although there are a few exposures of shales. A dyke which may be the extension of the Hudshouse Dyke cuts the section. The Birrenswark Lavas crop out approximately 400 m upstream of the bridge and may be traced up the slope southeast of the road. Sandstones of the Upper O.R.S. underlie the lavas but differ little in lithology from some of the Carboniferous sandstones.
  
From the lay-by continue 1 km up the road to the end of the safety fence. Here the stream swings away from the road and it is possible to park on a grassy track to the left.
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From the lay-by continue 1 km up the road to the end of the safety fence. Here the stream swings away from the road and it is possible to park on a grassy track to the left.
  
 
==== Locality 14 [NY 574 989] ====
 
==== Locality 14 [NY 574 989] ====

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