Editing Excursion to Derbyshire. July 27th to August 4th, 1914 - Geologists' Association excursion

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See laminated volcanic tuff and a limestone quarry above it. The beds are fossiliferous.
 
See laminated volcanic tuff and a limestone quarry above it. The beds are fossiliferous.
  
Return to Litton; descend by Tansley Dale to Cressbrook Dale. See another portion of Litton tuff and a bed of lava. Walk down the Dale. Near Ravensdale Cottages see another bed of contemporaneous volcanic tuff faulted against the limestone to the south of it.
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Return to Litton ; descend by Tansley Dale to Cressbrook Dale. See another portion of Litton tuff and a bed of lava. Walk down the Dale. Near Ravensdale Cottages see another bed of contemporaneous volcanic tuff faulted against the limestone to the south of it.
  
 
Near Cressbrook Mill see lava. Walk to Monsal Dale. If time permit, tea may be had at the Headstones Inn or in Monsal Dale.
 
Near Cressbrook Mill see lava. Walk to Monsal Dale. If time permit, tea may be had at the Headstones Inn or in Monsal Dale.
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The Alton Coal seam (about 300 ft. above the base of the Coal Measures) will be next examined in Bulibridge Brickyard. The floor of the seam is gannister, and its roof a marine band with an abundant fossil fauna: ''Gastrioceras, Orthoceras, Pterinopecten, Posidoniella, Megalichthys, ''etc. This seam is correlated with the Crabtree Coal of North Staffordshire, and the Bullion Coal of Lancashire.
 
The Alton Coal seam (about 300 ft. above the base of the Coal Measures) will be next examined in Bulibridge Brickyard. The floor of the seam is gannister, and its roof a marine band with an abundant fossil fauna: ''Gastrioceras, Orthoceras, Pterinopecten, Posidoniella, Megalichthys, ''etc. This seam is correlated with the Crabtree Coal of North Staffordshire, and the Bullion Coal of Lancashire.
  
Passing the outcrops of four grits and the Limestone Shales in downward succession, fine exposures of the Carboniferous Limestone of the Crich inlier will be examined in Crich quarries; vein-minerals (calcite, fluorite, barytes, galena, blende, etc.) may be collected, as well as corals and brachiopods of various species (D2 of Dr. Vaughan's classification).
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Passing the outcrops of four grits and the Limestone Shales in downward succession, fine exposures of the Carboniferous Limestone of the Crich inlier will be examined in Crich quarries ; vein-minerals (calcite, fluorite, barytes, galena, blende, etc.) may be collected, as well as corals and brachiopods of various species (D2 of Dr. Vaughan's classification).
  
 
In the Old Quarry there is a good section of Glacial Drift containing local and foreign erratics.
 
In the Old Quarry there is a good section of Glacial Drift containing local and foreign erratics.
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Breakfast 7.30 a.m.
 
Breakfast 7.30 a.m.
  
Leave by train at 8.33 a.m., change at Chinley, arrive 9.23; leave Chinley 10 2, arrive Bamford 10.27 a m.; depart by train from Water Works offices 10.45, arrive Derwent Dam 11.15. Walk through Dam and up bed of Derwent Reservoir to Howden Dam, examining the faulting and crumpling of the shales and thin sandstones exposed in the river bank, Evidence of the comparatively recent date of the wrinkles will be examined. They are probably due to a creep similar to that in deep mines, caused by the relaxation of pressure brought about by the removal of rock during the excavation of the stream, while the pressure remained as before in the hills on either side. The line of least strength determined the direction of the flexure. Arrive Howden Dam 1.15 p.m. Refreshments in West Tower. Depart by train, Howden Dam, 2.0 p.m.; arrive Water Works offices 2.30. Wagonettes to Grindleford. Depart Water Works offices 2.35; arrive Maynard Arms Hotel 3.30. Tea at Maynard Arms. Depart Maynard Arms 4.20; arrive Grindleford Station 4.30.
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Leave by train at 8.33 a.m., change at Chinley, arrive 9.23 ; leave Chinley 10 2, arrive Bamford 10.27 a m.; depart by train from Water Works offices 10.45, arrive Derwent Dam 11.15. Walk through Dam and up bed of Derwent Reservoir to Howden Dam, examining the faulting and crumpling of the shales and thin sandstones exposed in the river bank, Evidence of the comparatively recent date of the wrinkles will be examined. They are probably due to a creep similar to that in deep mines, caused by the relaxation of pressure brought about by the removal of rock during the excavation of the stream, while the pressure remained as before in the hills on either side. The line of least strength determined the direction of the flexure. Arrive Howden Dam 1.15 p.m. Refreshments in West Tower. Depart by train, Howden Dam, 2.0 p.m.; arrive Water Works offices 2.30. Wagonettes to Grindleford. Depart Water Works offices 2.35; arrive Maynard Arms Hotel 3.30. Tea at Maynard Arms. Depart Maynard Arms 4.20; arrive Grindleford Station 4.30.
  
 
The 4.38 train, Sheffield to Manchester, will be stopped at Grindleford to pick up the party. The party should be ready on the platform at 4.40. Change at Chinley, arrive 5.16, depart 5.33. Arrive Matlock Bath 6.34. Cost of drive 2s.
 
The 4.38 train, Sheffield to Manchester, will be stopped at Grindleford to pick up the party. The party should be ready on the platform at 4.40. Change at Chinley, arrive 5.16, depart 5.33. Arrive Matlock Bath 6.34. Cost of drive 2s.
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Proceed down to Blackwell Mill and along Chee Dale to Millers Dale by the River Wye.
 
Proceed down to Blackwell Mill and along Chee Dale to Millers Dale by the River Wye.
  
Leave Millers Dale at 4.25; arrive Matlock Bath 4 55; arrive Derby 5.25. Depart Derby 5.35 or 6.3; arrive St. Pancras 8.15 or 9.10.
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Leave Millers Dale at 4.25 ; arrive Matlock Bath 4 55 ; arrive Derby 5.25. Depart Derby 5.35 or 6.3 ; arrive St. Pancras 8.15 or 9.10.
  
 
Arrangements will be made for luggage to be conveyed to the station for those leaving Matlock Bath by the 4.55 train.
 
Arrangements will be made for luggage to be conveyed to the station for those leaving Matlock Bath by the 4.55 train.

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