Abstract
Conodonts of late Early Ordovician age (late Canadian, early-middle Arenigian) are identified from the Danmarks Fjord Member of the Wandel Valley Formation at its type locality near the head of Danmark Fjord, eastern North Greenland. The identifications confirm recent suggestions of an Early Ordovician age for the member made on lithostratigraphic grounds, and refute earlier opinions that the dolomite was probably of Early Cambrian age.
Highlights
Conodonts of late Early Ordovician age are identified from the Danmarks Fjord Member of the Wandel Valley Formation at its type locality near the head of Danmark Fjord, eastern North Greenland
The name Danmarks Fjord Dolomite was introduced by Frankl (1955) for thin sequences of carbonates occurring at Kap Holbæk, near the head of Danmark Fjord, and at Sæfaxi Elv in Kronprins Christian Land
Frankl's description was apparently based on his own field work in Kronprins Christian Land and on observations made by Adams & Cowie (1953) at Kap Holbæk
Summary
Conodonts of late Early Ordovician age (late Canadian, earlymiddle Arenigian) are identified from the Danmarks Fjord Member of the Wandel Valley Formation at its type locality near the head of Danmark Fjord, eastern North Greenland. The Danmarks Fjord Dolomite was originally thought to be of Ordovician age (Adams & Cowie, 1953; Frankl, 1955), subsequent publications by Cowie (1961, 1971), Dawes (1976), Christie & Peel (1977), Poulsen (1978) and O'Connor (1979) have presumed an Early Cambrian age. Field work in 1979 and 1980 organised by the Geological Survey of Greenland, as part of the 'North Greenland Project 1978-1980', suggested that the Danmark~ Fjord Dolomite merely represented the lowest beds of the Wandel Valley Formation of Early-Middle Ordovician age (Peel, 1980; Peel et al, 1981).
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