i 
Parr] FALSE-BEDDING. ee 
eurrent-bedding (a a), while others, formed of muddy layers and not 
obliquely laminated (0 b), point to intervals when, with the cessation 


Fie. 187.—OrpInARyY LAMINATION AND CURRENT-LAMINATION, UPPER OLD RED 
SANDSTONE, CLowES Bay, WATERFORD (B.). 
a, d, e, beds of sand and silt deposited horizontally and apparently from mechanical 
suspension; b, c, beds of sand which have been pushed along the bottom. 
of the silt-bearing currents, the water became still enough to allow 
the mud suspended in it to settle on the bottom." 
Instances may be noticed where the diagonal lamination is con- 


GS 












a, a, beds formed of broken shells, fish-teeth, pieces of wood, and oolitic grains; b, b, 
layers of clay. 
torted as well as steeply inclined, or where highly contorted beds 
are interposed between others which are undisturbed and horizontal. 
Curved and contorted lamination is of frequent occurrence among 
SS 

Fic. 189.—ConrorTep FAtsr-seppIne, Fic. 190.—Contortep Post-TERTIARY 
CAMBRIAN SANDSTONE, GAIRLOCH. SANDS AND CLAYS, NEAR ForREs. 
palzozoic sandstones. In Fig. 189, an example is given from one of the 
oldest formations in Britain, and in Fig. 190 another from one of the 
1 Geological Observer, p. 536. . 
