Cross-Bedding and Grain Size in the Lower Cretaceous Sands of East Anglia

Abstract

The cross-bedding of the Lower Cretaceous sands between Leighton Buzzard and Hunstanton has been studied. This paper describes new evidence which throws further light on the depositional environment and palaeogeography of these sediments.Both cross-bedding and grain size distribution were investigated in detail in the Woburn Sands (Aptian). These beds lie between Cambridge and Leighton Buzzard (Cameron, in Kirkaldy, 1939, p. 407), and are the youngest “;Lower Greensand” of East Anglia. Rather less attention has been paid to the pre-Barremian Sandringham Sands (Downham to Hunstanton). Unfortunately, the Carstone of Hunstanton shows no cross-bedding.