00976nas a2200109   4500008004100000245007100041210006500112490000700177520060800184100001800792856005600810       1983                        eng d00aThe stratigraphy and structure of the Crag of mid-Suffolk, England0 astratigraphy and structure of the Crag of midSuffolk England0 v943 aGlauconite-coated flints at the base of a recently recognized spread of Crag deposits are thought to have been derived from a formerly more extensive basal Bullhead Bed of the Thanet Beds. No lithological basis has been found for subdividing the Crag into Norwich and Red Crag, although the faunal criteria for separation these two Crags is of chronological significance. A number of sub-drift northeasterly trending faults and fault-guided Crag basins have been identified. The age of these structures is thought to be early Pleistocene and there was probably syndepositional movement along the faults.1 aBristow, C.R.  uhttps://neogenebryozoans.myspecies.info/bristow1983