File:GA Image 0172.jpg: Revision history

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15 September 2020

8 September 2020

  • curprev 13:4313:43, 8 September 2020Scotfot talk contribs 887 bytes +887 Long excursion to the Berwyns. July 31st to August 7th, 1908 - Geologists' Association excursion (Geologists' Association Circular No. 97. Session 1907–1908 p.5.) Copyright: Geologists' Association. Figure 2.—Section from Gloppa to Old Oswestry.—A. C. Nicholson. Horizontal scale : 2 inches =1 mile. Vertical scale : 1 inch = 880 feet. The numbers above the section indicate heights above Ordnance datum. 1. Upper Carboniferous Limestone Beds. 2. Millstone Grit. 3. Lower Coal Measures. (Reproduc...