A revised stratigraphical scheme based on numerous measured sections and extensive mapping is proposed for the Carboniferous and Permian sequences of Spitsbergen and Bj0rn0ya, the important Arctic archipelago, in order to provide an up-to-date framework for future work there. New data on the fusulinid zones is summarized and the age of the sequence discussed. A brief stratigraphical interpretation with four maps showing outcrops, thicknesses, active faults, and main lithological boundaries is given and recent published and unpublished work is reviewed.

Challinor, currently used to define the base of the Puaroan Stage, is a composite taxon some members of which are here re-identified as H. arkelli and H. mangaoraensis. The remainder are re-described as Hibolithes sp A. Its morphology and stratigraphic range are poorly known and the species is unsuitable as a stage boundary marker. Hibolithes arkelli regularly appears near the base of the Puaroan Stage as presently defined and a formal re-definition based on that taxon is proposed. Although this alters the faunal basis of the stage, the position of its base remains unchanged.

Br0ggerhalv0ya is situated on the north-west coast of the island of Vestspitsbergen. It is shown to contain a fold and overthrust complex of Tertiary age. Large northerly movement of PreCambrian rocks, previously metamorphosed in the Caledonian diastrophism, occurred over deformed but unmetamorphosed Permo-Carboniferous and Tertiary rocks on a major curved overthrust. The structure is complicated by rapid plunge variations and subsidiary faulting. The existence of a large klippe is demonstrated and the formation of curved thrust surfaces is discussed.A brief summary of the stratigraphy is given and its important relationship to the structure discussed. A new lithostratigraphical scheme of nomenclature is proposed.

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