Journal article

Sedimentology of a sandur formed by multiple jokulhlaups, Kverkfjoll, Iceland

Philip M Marren, Andrew J Russell, E Lucy Rushmer

SEDIMENTARY GEOLOGY | ELSEVIER | Published : 2009

Abstract

The Kverkfjöll sandur in north Iceland is the furthest upstream of a suite of fluvial landforms extending for 200 km along the Jökulsá á Fjöllum river. Incision of the sandur exposes over 3 km of sedimentary sections, up to 15 m in height. A sandur wide, well-bedded succession of matrix-rich cobble-gravel and pebble/granule gravel, with individual beds 0.2 to 0.5 m thick indicates that the sandur is primarily the product of sandur-wide sheet-floods, with sediment-rich hyperconcentrated flows and also some debris flows and channelised turbulent flows. This interpretation is evidenced by bedded hyperconcentrated flow deposits occurring as laterally extensive tabular depositional units that dom..

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University of Melbourne Researchers

Grants

Funding Acknowledgements

Grants from Earthwatch International and the Royal Society to AJR funded this research. The Team III volunteers from 2000 and 2003, and Wouter van Wijk and Denise MaIjers are thanked for their assistance with data collection. DrJonathan Carrivick, Dr Fiona Tweed, DrJames Rice and Dr Matthew Roberts provided additional comments and assistance during fieldwork. The constructive advice of the reviewers and editors is gratefully acknowledged,