Kap Stewart Group

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]

Kap Stewart Group
Stratigraphic range: Rhaetian-Sinemurian
Type	Group
Sub-units	Innakajik, Primulaelv & Rhætelv Formations
Underlies	Neill Klinter Group
Overlies	Scoresby Land Group[1]
Area	>12,000 km2 (4,600 sq mi)
Thickness	155–600 m (509–1,969 ft)
Location
Region	Greenland
Type section
Named for	Kap Stewart

Description

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]