Reports and Proceedings — Geological Society of London. 275 



Chalk, and White Chalk in West Norfolk. So far as Norfolk is 

 concerned this Memoir completes the description of that county 

 by the Geological Survey, and it contains a Bibliography supple- 

 mentary to that published in " The Geology of the Country around 

 Norwich" (ISSl). In the work before us we have the benefit of 

 some recent observations on the Lower Greensand, made by 

 Mr. G. W. Lamplngh, who has added much to the knowledge 

 gained bj'^ his colleagues and by geologists who preceded them. 

 He divides the formations into — 



Approximate Correlations. 



Carstone r= Folkestone, Sandgate, and Hythe Beds. 



Snettisham Beds = Tealby Limestone. 

 Sandriugham Sands =i Tealby Clay. 



It is interesting to note that Mr. Lamplugh believes that the 

 ■Sandriugham Sands, as a whole, are newer than the Spilsby 

 Sandstone. 



Much of the information with regard to the Gault and Eed Chalk, 

 and also of the Lower and Middle Chalk, has been previously 

 published by Messrs. Jukes-Browne and William Hill. It is, 

 however, useful to have the information brought together in. 

 a handy form, especially in connection with the classic regions 

 of Hunstanton. The detailed information on the Glacial Drifts 

 and superficial deposits contains much new matter, and there are 

 appended the records of numerous well-sections in Norfolk and 

 Lincolnshire. 



le-iBiFoi^TS jk.35rnD I='I^ooE]:H!I:lII^^(3-s. 



Geological Societt of London. 



I.— March 22, 1899.— W. Whitaker, B.A., F.R.S., President, in the 

 Chair. The following communications were read : — 



1. " Relations of the Chalk and Drift in Moen and Riigen." 

 By Professor T. G. Bonney, D.Sc, LL.D., P.R.S., F.G.S., and the 

 Rev. Edwin Hill, M.A., F.G.S. 



These two islands are separated in a north-westerly to south- 

 easterly direction by about 35 miles of sea. They both exhibit at 

 many spots the Chalk and Drift, in relations which are peculiar and 

 abnormal. Some geologists maintain that the glacial beds have been 

 included in the Chalk by a series of acute folds ; others, that they 

 have been dropped down by a series of faults ; others, again, explain 

 the relationship as the result of ice-action. Simple faulting appears 

 to be insufficient, while it is a circumstance not easily explained by 

 •earth-movement or ice-action that the axes of the folds in the Chalk 

 strike roughly east-north-east to west-south-west in Moen and north 

 and south in Riigen. 



The authors then describe a series of sections in Moen which lead 

 them to the following conclusions : — 



