Purbeck beds

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Pur´beck beds`

1.(Geol.) The strata of the Purbeck stone, or Purbeck limestone, belonging to the Oölitic group. See the Chart of Geology.
Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.
References in periodicals archive ?
The extreme ammonite faunal provincialism during the latest Jurassic and the earliest Cretaceous encouraged the definition and use of several stages which more or less overlap in time (for instance: Portlandian, Purbeckian, Volgian, Tithonian, Bolonian, etc.).
(2004): The cyclic hierarchy of the "Purbeckian" Sierra del Pozo Section, Lower Cretaceous (Berriasian), southern Spain.