Abstract

Four formations, namely the Johansen Land Formation (new), the Warming Land Formation (new) including the Røhling Land Member (new), the Steensby Gletscher Formation (new) and the Cape Webster Formation, are assigned to the lower part of the Ordovician platform carbonate sequence in the Warming Land/Nares Land region. These are formally described, and a correlation with the sequences in Washington Land and Peary Land is proposed.

Highlights

  • The Lower and Middle Ordovician platform carbonates, Le., the 'recessive dolomite unit', the 'diff-forming limestone and dolomite unit' and the Cape Webster Formation of Peel (1980), were logged in detail at 10 localities from Freuchen Land in the east to Washington Land in the west during the 1984 field season

  • Three new formations and one new member are formally established within the 'recessive dolomite unit' and the 'diff-forming limestone and dolomite unit' of Peel (1980), namely the Johansen Land Formation, the Warming Land Formation, induding the Røhling Land Member, and the Steensby Gletscher Formation

  • It is possibie to map these formations in Nares Land, Wulff Land and Warming Land, while the overlying Cape Webster Formation can be traced from Washington Land to Nares Land

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Summary

Introduction

The Lower and Middle Ordovician platform carbonates, Le., the 'recessive dolomite unit', the 'diff-forming limestone and dolomite unit' and the Cape Webster Formation of Peel (1980), were logged in detail at 10 localities from Freuchen Land in the east to Washington Land in the west (fig. 1) during the 1984 field season. The Lower and Middle Ordovician platform carbonates, Le., the 'recessive dolomite unit', the 'diff-forming limestone and dolomite unit' and the Cape Webster Formation of Peel (1980), were logged in detail at 10 localities from Freuchen Land in the east to Washington Land in the west The lower half of the formation is dominated by 5-15 m thick beds of dark brown, strongly mottled sucrosic dolomites with abundant black and white chert nodules.

Results
Conclusion
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