Foraminiferal biostratigraphy of the Chalk Group in the York District

摘要

Foraminifera from the Chalk group in Yorkshire are only poorly known. The samples examinedudfor this report add considerably to our understanding of their distribution and their relationshipudwith associations in southern England. Foraminifera prove the age of samples from the Ferriby toudBurnham Chalk formations and tie the “Upper Pink Band” and “Lower Pink Band” into theudbiostratigraphical scheme. Assemblages indicative of foraminiferal zones BGS4 to BGS16 wereudpresent. Recrystalisation of several faunas from the Burnham Chalk Formation preventedudaccurate age determinations.