File:GA Image 0440.jpg
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Summary
Figure 6 Diagrams to illustrate the history of the Blackheath subsidences. Fig. 1 Original Denehole, with narrow well-preserved Shaft, passing through Eocene Clays and Sands, and ending in a cavity in the Chalk. Fig. 2 Denehole Shaft, stopped up, erosion of hollow at base of Pebble Beds. Fig. 3 Denehole, after the subsidence (drawn to scale).
| From: A record of excursions made between 1860 and 1890. Edited by Thomas Vincent Holmes , F.G.S. and C. Davies Sherborn, F.G.S. London: Edward Stanford [For the Geologists’ Association], 1891. Source: Cornell University copy on the Internet Archive (Public domain work) |
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 10:52, 3 February 2022 | Error creating thumbnail: File missing | 2,029 × 1,290 (637 KB) | Scotfot (talk | contribs) | Figure 6 Diagrams to illustrate the history of the Blackheath subsidences. Fig. 1 Original Denehole, with narrow well-preserved Shaft, passing through Eocene Clays and Sands, and ending in a cavity in the Chalk. Fig. 2 Denehole Shaft, stopped up, erosion of hollow at base of Pebble Beds. Fig. 3 Denehole, after the subsidence (drawn to scale). {{Template:GA excursions1860-1890}} |
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