 According to Ian West of Southampton University, "Hengistbury Head is the best part of the Bournemouth coast for geology and geomorphology .... [and] is geologically important for the unusual nodules of sideritic ironstone [found] in Middle Eocene strata." The exposed and relatively untouched cliff face at the Head perfectly lends itself to students of stratigraphy. Warren Hill itself is composed of Tertiary Bracklesham Beds, a mixture of clays and marls with overlying sandy and lignitic beds.
