Fan-delta sedimentation: An example from the Late Jurassic - Early Cretaceous of Milne land, Central East Greenland

Abstract

The Hartz Fjeld Formation (Middle Volgian - Ryazanian) is interpreted as a synorogenic fan-delta complex. The lower part of the formation is characterised by coarsening upwards fan-delta sequences with marine delta destructive units. A thick lagoonal unit separates these sequences from the upper part of the formation in which fan-delta deposition resumed in a lateral position and fan plain sands are intercalated within bay muds. A distinction is made between fan-delta deposition, dominated by sheetflood and streamflood processes, and short-headed stream delta deposition in which flow is confined in stable channels.