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The Main Rock Platform of the Firth of Lorn, Western Scotland

J. M. Gray
Transactions of the Institute of British Geographers
No. 61 (Mar., 1974), pp. 81-99
DOI: 10.2307/621601
Stable URL: http://www.jstor.org/stable/621601
Page Count: 19
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The Main Rock Platform of the Firth of Lorn, Western Scotland
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Abstract

At a low level along the coasts of the Firth of Lorn and neighbouring areas, evidence of raised marine erosion is almost continuous. The landforms include fine examples of rock platforms, cliffs, undercuts, caves, natural arches, geos and stacks. Accurate levelling of all rock platform fragments in the area indicates that one major shoreline--termed the Main Rock Platform--is present. It is believed to have originated in a late interglacial though subsequent marine action has removed most of the drift cover and probably retrimmed the cliffs in places. Linear regression and trend-surface analysis indicate a general slope westwards for the shoreline at a gradient of 0.16 m per km. However, this general trend is complicated by a number of bends and one possible fault. The tilting of the shoreline is probably largely due to tectonic movements. The influence of lithology and exposure on shoreline height and landform development are also examined.

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