Turbidites and associated resedimented deposits from a tilted glacio - deltaic sequence, Denmark

Sedimentological facies analysis reveals that a so-called hatshaped hill in NW Zealand consists of several coarsening- upward steep slope deltaic associations, alternating with monotonous deltaic-lacustrine associations. About 58% of the beds probably were deposited from turbidity currents as underflows, inflows and overflows, and about 15-20% from buoyancy dominated debris flows and density modified grain flows.

Deposition is suggested to have taken place in a stagnant ice-marginal lake environment. Penetration of the icesheet by thermo-karst, and the actual morphology of the stagnant icemasses probably influenzed the development of large holes, which were the sites of deposition. Fluctuation in position of the active ice margin is thought to be reflected in the vertical record as repeated changes in sub-environment from steep slope deltaic to deltaic-lacustrine. The tilting was caused by ice push and gravitational overturning.