Abstract
This paper revises the stratigraphy of a conspicuous sequence of generally cliff-forming limestones which spans the Ordovician - Silurian boundary in Washington Land, western North Greenland (fig. 4). The strata are referred to the Morris Bugt Group, formally proposed here. Four constituent formations are recognised (fig. 5), three ofwhich have been previously described. However, the relevant sections were originally examined by Lauge Koch under arduous conditions and the passage of more than half a century has inevitably left its mark. It is not proposed to offer a full description of all the rock units at this time. The uppermost formation, the Aleqatsiaq Fjord Formation, is described by Hurst (in press), the three older formations will be discussed fully at a later date.
Highlights
This paper revises the stratigraphy of a conspicuous sequence of generally cliff-forming limestones which spans the Ordovician - Silurian boundary in Washington Land, western North Greenland
The relevant sections were originally examined by Lauge Koch under arduous conditions and the passage of more than half a century has inevitably left its mark
The Morris Bugt Group is subdivided into four formations; Gonioceras Bay Formation (70-80 m), Troedsson Cliff Formation (240-250 m), Cape Calhoun Formation (65-70 m) and Aleqatsiaq Fjord Formation (250-360 m), in ascending order
Summary
The Aleqatsiaq Fjord Formation provides a link between previously described Ordovician and Silurian nomenclature (summarised by Koch, 19293, and Hurst, in press). A correlation with previous stratigraphic schcmes is presented in fig. A correlation with previous stratigraphic schcmes is presented in fig. 5
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