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  Fig. 3.1f : Exposure of an angular unconformity on the eastern coast of Scotland near Sicar Point, a site made famous by James Hutton, one of the founders of Geology. Siccar Point provides good exposures of Upper Old Red Sandstone (Devonian) strata resting unconformably on greywackes (Silurian). Intersections of the underlying inclined strata with the unconformity form discrete lineations as in Figure 3.1c. Photograph by D.D. Pollard..  
         
 
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