IV.—The “Great Submergence” Again: Clava, etc. Part II
Last month I glanced at some of the difficulties attaching to the theory of a “ great submergence ” during Glacial times, particularly in connection with the deposition of this shelly clay at Clava. In regard to the alternative theory of transport by land-ice, the following facts may be enumerated a...
| Published in: | Geological Magazine |
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| Main Author: | |
| Format: | Article in Journal/Newspaper |
| Language: | English |
| Published: |
Cambridge University Press (CUP)
1897
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| Subjects: | |
| Online Access: | http://dx.doi.org/10.1017/s0016756800175156 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0016756800175156 |
| Summary: | Last month I glanced at some of the difficulties attaching to the theory of a “ great submergence ” during Glacial times, particularly in connection with the deposition of this shelly clay at Clava. In regard to the alternative theory of transport by land-ice, the following facts may be enumerated as so far in its favour:- (a) Evidences of ice-action are conspicuous all over the district. It is a region of intense glaciation, and this special locality is right in the tract of the ancient ice-sheet. (b) The traces of the movement show that, with a very small submergence, the ice-sheet must have passed over part of a former sea-bottom. (c) That in this neighbourhood it rose in its progress, carrying numerous boulders with it in its course, and leaving them at higher elevations than their parent beds of rock. |
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