East Greenland Caledonides: stratigraphy, structure and geochronology: The Neoproterozoic Rivieradal Group of Kronprins Christian Land, eastern North Greenland

Abstract

The Rivieradal Group, formally defined here, is confined to the Vandredalen thrust sheet of the Caledonian orogen in Kronprins Christian Land, eastern North Greenland. It comprises a successionof Neoproterozoic siliciclastic sediments that represent the fill of a half-graben basin. The syn-rift Rivieradal Group is overlain by post-rift sediments of the Hagen Fjord Group. The latter succession is present in both the thrust sheet and the Caledonian foreland to the west. In the foreland, where the Rivieradal Group is not represented, the Hagen Fjord Group disconformably overlies Palaeoproterozoic–Mesoproterozoic sandstones of the IndependenceFjord Group.

Keywords

• Caledonian
• North Greenland
• Precambrian
• Proterozoic
• stratigraphy