THE 



QUARTERLY JOURNAL 



or 



THE GEOLOGICAL SOCIETY OF LONDON, 



Vol. LXXVIII 



roR 1922. 



1. On the JuNCTiois' of G-ArLT and Lowee GtREEIs^sand near 

 Leightois^Buzzaed (Bedfoedshiee). By GrEOEGE William 

 Lamplugh, F.R.S., F.a.S. (Read May 25th, 1921.) 



Contents. 



Page 



I. Introduction 1 



II. Description of the Sections 4 



III. Palaeontological Notes 44 



IV. Classification, Structure, and Conditions of Deposition 53 



V. Discussion of the ' Overturn ' Hypothesis 68 



VI. Summary 80 



Note.— Throughout this paper, where the names of fossils are printed in 

 ordinary (Roman) type between single quotation-marks, this implies that the 

 name is only an approximate or ' field ' determination, and should not be 

 regarded by the palaeontologist as final. Where names are printed in the 

 usual italics, the determination is expert or authoritative, and ought therefore 

 to be of palaeontological moment. 



I. Inteodiictio:n^. 



Eighteen years ago the late J. F. Walker and myself described 

 to the Society 1- a remarkable fossiliferous limestone occurring* 

 immediately beneath the Grault at Shenley Hill near Leighton 



^ ' On a Fossiliferous Band at the Top of the Lower Greensand near Leighton 

 Buzzard ' Q. J. G. S. vol. lix (1903) pp. 234-65 & pis. xvi-xviii. 



Q.J.G.S. No. 309. B 



