Editing Millstone Grit of Almscliff Crag and Harlow Car, near Harrogate - an excursion

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[[File:YGS_YORKROCK_FIG_07_03.jpg|thumbnail|Figure 7.3 Map of Harlow Car, showing access to Localities 8–10.]]
 
[[File:YGS_YORKROCK_FIG_07_03.jpg|thumbnail|Figure 7.3 Map of Harlow Car, showing access to Localities 8–10.]]
  
'''By Ian Chisholm''' formerly British Geological Survey
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== 7 The Millstone Grit of Almscliff Crag and Harlow Car, near Harrogate ==
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By Ian Chisholm formerly British Geological Survey, Keyworth, Nottingham: now 4 Park Street, Loughborough, Leics. LEII 2EG
  
 
== Purpose ==
 
== Purpose ==
  
At Almscliff Crag a typical Millstone Grit (Carboniferous, Namurian) is well exposed, and shows the effect of a gravitational slump that developed during deposition. At Harlow Car, finer-grained sediments can be examined in sequence below the Almscliff Grit. The two localities lie on opposite sides of the Harrogate '''Anticline'''.
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At Almscliff Crag a typical Millstone Grit (Carboniferous, Namurian) is well exposed, and shows the effect of a gravitational slump that developed during deposition. At Harlow Car, finer-grained sediments can be examined in sequence below the Almscliff Grit. The two localities lie on opposite sides of the Harrogate Anticline.
  
 
== Logistics ==
 
== Logistics ==
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This one-day excursion can be split into two half days if required. Almscliff Crag (Localities 1–7) involves scrambling over rocks, and walking boots are needed. The geological meaning of the scenery is best appreciated in low winter sunlight.
 
This one-day excursion can be split into two half days if required. Almscliff Crag (Localities 1–7) involves scrambling over rocks, and walking boots are needed. The geological meaning of the scenery is best appreciated in low winter sunlight.
  
Harlow Car (Localities 8–10) includes a stream section and needs wellington boots. This section is best on a bright day in February or March; the summer months are unsuitable because the trees cut out the light, and in autumn the stream may be too full. Access to both is by car, but parking space is limited and neither is suitable for large parties. The walking distance in each case is about 2 km.
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Harlow Car (Localities 8–10) includes a stream section and needs wellington boots. This section is best on a bright day in February or March; the summer months are unsuitable because the trees cut out the light, and in autumn the stream may be too full. Access to both is by car, but parking space is limited and neither is suitable for large parties. The walking distance in each case is about 2 km.
  
''Note: ''The Almscliff Grit has been renamed the Warley Wise Grit on the most recent B.G.S. map [Sheet 70).
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''Note: ''The Almscliff Grit has been renamed the Warley Wise Grit on the most recent B.G.S map [Sheet 70).
  
 
== Maps ==
 
== Maps ==
  
O.S. 1:50 000 Sheet 104, Leeds, Bradford & Harrogate; B.G.S. 1:50 000 Sheet 62 Harrogate, Solid or Drift edition; 1:50 000 Sheet 70 Leeds, Solid or Drift edition.
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O.S. 1:50 000 Sheet 104, Leeds, Bradford & Harrogate; B.G.S. 1:50 000 Sheet 62 Harrogate, Solid or Drift edition; 1:50 000 Sheet 70 Leeds, Solid or Drift edition.
  
 
B.G.S. Memoir, Harrogate (Cooper & Burgess, 1993).
 
B.G.S. Memoir, Harrogate (Cooper & Burgess, 1993).

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