Unit Name: Zebra Cliffs Formation
Unit Type: Lithostratigraphic
Rank: Formation
Status: Formal
Usage: Currently in use
Age Interval: Late Ordovician (460.9 - 443.7 ma)
Age Justification: Members A and B contain a prolific Late Ordovician shelly fauna including Troedssonites consoiratus (Troeddson), Sibiriolites sibiricus Sokolov, Palaeofavosites sp., Cateni-pora sp., Calapoecia sp., Rostricellula sp., Rhynchotrema sp.; Member C contains graptolites including Climacograptus latus Elles and Wood.
Province/Territory: Nunavut

Originator: Trettin, 1969c.

Type Locality:
Zebra Cliffs, west coast of M'Clintock Inlet, northern Ellesmere Island.

Distribution:
About 870 m thick at the type section; exposed in vicinity of M'Clintock Inlet and Disraeli Fiord.

Locality Data:
Thickness(m): Typical 870.

Lithology:
Member A (22 m), cliff-forming limestone and dolostone; middle, Member B (550 m 1), argillaceous, silty, and sandy limestone and variable proportions of sandstone and siltstone (commonly red); Member C (480 m 1), dark grey argillaceous and dolomitic limestone and calcareous and dolomitic mudstone.

Relationship:
Overlies Taconite River Formation and underlies Imina Formation, both contacts conformable; Member C could be considered as a tongue of Hazen Formation.

References:
Trettin, H.P., 1969c. Geology of Ordovician to Pennsylvanian rocks, M'Clintock Inlet, north coast of Ellesmere Island, Canadian Arctic Archipelago: Geological Survey of Canada, Bulletin 183, 142p.

Source: CSPG Lexicon of Canadian Stratigraphy, Volume 1, Arctic Archigelage (District of Franklin); R.L. Christie, A.F. Embry, G.A. Van Dyck (editor)
Contributor: H.P. Trettin
Entry Reviewed: Yes
Name Set: Lithostratigraphic Lexicon
LastChange: 28 Jan 2009