GEOGRAPHY OF BRITISH ISLES IN DEVONIAN TIME 



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Figure 1. — Geography of the British Isles in Devonian Time 



The loci of deposition of the Old Red Sandstone of the Lower and Middle divisions 

 are shown and are interpreted as river basins, not as lakes, though subordinate lacus- 

 trine phases would attend fluviatile deposition. The outcrops of Devonian formations 

 are shown in black. 



