Kap Stewart Group

Kap Stewart Group Stratigraphic range: Rhaetian to Sinemurian
Type	Group
Sub-units	Innakajik Formation, Primulaelv Formation & Rhætelv Formation
Underlies	Neill Klinter Group
Overlies	Scoresby Land Group[1]
Area	>12,000 sq km
Thickness	155-600 m
Location
Region	Greenland
Type section
Named for	Kap Stewart

The Kap Stewart Group is a geological group in eastern Greenland of Late Triassic (Rhaetian) to Early Jurassic (Sinemurian) age. It consists of a 155-600 m thick sequence of interbedded mudstones and fluvio-deltiac sandstones deposited in a "large wave and storm-dominated lake".^[2][3] Originally known as the Kap Stewart Formation, it was later raised to Group status.^[3] It comprises three formations, the organic-rich lacustrine mudstones with interbedded sheet sandstones of the Rhætelv Formation (developed in the basin centre) the alluvial plain sandstone and conglomerate of the Innakajik Formation overlain by delta plain sandstones to mudstones of the Primulaelv Formation (both restricted to the basin margin).^[3]

References

1. Kent, D.V.; Clemmensen L.B. (1996). "Paleomagnetism and cycle stratigraphy of the Triassic Fleming Fjord and Gipsdalen Formations of East Greenland" (PDF). Bulletin of the Geological Society of Denmark 42: 121–136. Retrieved 6 December 2012.
2. Surlyk, F.; Noe-Nygaard N.; Dam G. (1993). "High and low resolution sequence stratigraphy in lithological prediction–examples from the Mesozoic around the northern North Atlantic". In Parker J.R. & Bartholomew I.D. Petroleum geology of Northwest Europe: proceedings of the 4th conference. London: Geological Society. pp. 199–214. ISBN 9780903317856. Retrieved 1 December 2012.
3. Surlyk, F. (2003). "The Jurassic of East Greenland: a sedimentary record of thermal subsidence, onset and culmination of rifting" (PDF). Geological Survey of Denmark and Greenland Bulletin (GEUS) 1: 659–722. Retrieved 6 December 2012.