"Combined thickness at the type-site of 24.19m. Bed A 8.33m, Bed B 8.69m and Bed C 7.17m."@en . . . "BHCK"@en . . "Chalk with subsidiary flint and limestone. Stratified bedrock. Occurs onshore. Deposited during the Campanian Age (Cretaceous Period) (83.7-72.2 Ma BP)."@en . "The upper boundary is taken at the well-developed erosional surface at the base of the Larry Bane Chalk Formation. See Fletcher (1977)."@en . . "Boheeshane Chalk Formation"@en . . . "72.2"^^ . "Boheeshane Chalk Member [Obsolete: use BHCK]"@en . "83.7"^^ . "stable"@en . "Limestone (chalk), with common bands of very large flints and tabular flints. Some green-coated chalk pebble beds near the base and as a prominent bed associated with sponges in the middle of the sequence. Hard pellet chalk in softer matrix is common at some levels Divided into three main \"Beds\" (A, B and C) each further divided into numbered \"units\". Each \"Bed\" separated by marked bedding planes that are locally emphasized by weathering. There are a number of notable fossil acmes throughout the formation. Considered to be much finer-grained than older gritty members and termed \"White Chalk\" by Wolfe (1968). A distinctive massive flint band, which marks the upper limit of Gonioteuthis, is termed the Whitehead Flint Band (of Bed status) whose type reference section is the old quarry at Whitehead [J 474 913]."@en . "The base is defined by reference to the uppermost pebble bed of the underlying Creggan Chalk Formation (q.v.) and the stromatolitic \"mulatto\" surface in marginal areas."@en . . . "Boheeshane Chalk Formation"@en . .