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LXIX. On the Geology of East Norfolk ; with Bcmarks upon 

 the Hypothesis of Mr. Robberds, respecting the former Level 

 of the Ge)-man Ocean. By R. C. Taylor, Esq. F.G.S. 



[Continued from page 290.] 



TN a preceding paragraph of this paper a proof of the violent 

 -*• disruption of the strata is exhibited in the enormous de- 

 tached masses ot chalk, lodged in the diluvial cliffs and occu- 

 pying a position above the crag, v.'hich is seen distinctly stra- 

 tified, reposing upon the plane of the original or main body of 

 chalk. . 



An examination into the materials of this range of cliffs 

 will introduce to our notice more ancient formations, whose 

 traces are not here so readily accounted for. The shore to 

 the west of Cromer exhibits a singular accumulation of tra- 

 velled fragments of primitive rocks, whence it would not be 

 difficult to collect a tolerably illustrative series. They consist 

 chiefl}"^ of rounded blocks ot" several varieties of granite, ba- 

 salt, porphyry, trap, and micaceous schist; sandstones of va- 

 rious kinds, chert, breccia ; besides limestone, claystone, &c. 

 I am not sufficiently acquainted with the nomenclature of 

 rocks to hazard a more detailed enumeration here. The dilu- 

 vial fragments of the later series are from the chalk, the plas- 

 tic clay, London clay, green sand, Kelloway's rock, the oolites, 

 lias clay, and marlestone ; — in fact, almost every formation 

 above the coal measures. These are of all intermediate mag- 

 nitudes, up to four tons weight. Large bouldered masses may 

 be seen in the sea at low water, lying mixed with flints, upon 

 the chalk. One block of granite was observed near six feet 

 in diameter. Another mass standing six or eight feet high, 

 has for years been known to the fishermen under the name of 

 Black Meg. This collection extends about two miles, chiefly 

 opposite to Beeston Hills. At Happisburgh Cliff' the blue 

 diluvial mud or clay appears to contain rolled fragments of 

 various primeval and secondary rocks. Among them have 

 been observed granite, basalt, sandstones, black siliceous peb- 

 bles, septaria, and micaceous schist containing small garnets. 



Whence has this singular assemblage been derived ? Cer- 

 tainly not from ballast ; the size of many of these stones pre- 

 vent that supposition, as does the locality of their position. 

 Had they drifted from our northern continental shores, as has 

 been suggested, one would expect to find them dispersed ge- 

 nerally along this coast. But the question appears decided by 

 the fact that they are chiefly, if not entirely, supplied by the 



diluvial 



