1873.] 



JTTDD THE SECOND ART ROCKS OF SCOTLAND. 



125 



of white sandstone at the base, and in another part of clays and 

 argillaceous grits, with much vegetable matter. They lie in part 



Fig. 7. — Section across the Reefs at Port-an-liigli, along line * * 

 of the Plan (see fig. 6). 



S.E. 



FAULT. 



N.W. 



a. Beds of Old Eed Sandstone, dipping N.E. 



b. Shales and limestones of the Middle Oolite, dipping S.E. 



c. Boulder-clay, capping Old Bed Sandstone in the cliffs. 



against the contorted Silurian rocks, and in part against the highly 

 inclined strata of the Old Eed Sandstone, though the actual contact 



-Section across Shore and Reefs at CacW-an-Righ, along 

 the line f f of the Plan (see fig. 6). 



Old Eed 



Sandstone. 



Lower 

 Oolite. 



Middle 

 Oolite. 



e J V 



a. Old Bed Conglomerate. 

 h. Old Bed flaggy sandstones. 

 (Talus.) 



c. White sandstones and light blue clays (estuarine). 



d. Alternations of variegated clays, sandstone, and argillaceous 



limestone (freshwater fossils). 



e. Shelly bands and clays (mixture of freshwater and marine shells 



and numerous plant-remains). 

 /. Thin coal-seam. 



g. Sandstone with many marine fossils (" Boof-bed "). 

 h. Sandy clays with marine fossils. 

 k. Dark blue clays with septaria (marine fossils). 



is concealed by the shingle of the beach. One of the shafts (the 

 northern one) sunk by an unfortunate speculator, who hoped to find 



