Coarse clast ridge sequences as suitable archives for past storm events? Case study on the Houtman Abrolhos, Western Australia
Version of Record online: 31 AUG 2012
Copyright © 2012 John Wiley & Sons, Ltd.
Journal of Quaternary Science
Volume 27, Issue 7, pages 713–724, October 2012
How to Cite
Scheffers, A. M., Scheffers, S. R., Kelletat, D. H., Squire, P., Collins, L., Feng, Y., Zhao, J.-X., Joannes-Boyau, R., May, S. M., Schellmann, G. and Freeman, H. (2012), Coarse clast ridge sequences as suitable archives for past storm events? Case study on the Houtman Abrolhos, Western Australia. J. Quaternary Sci., 27: 713–724. doi: 10.1002/jqs.2558
- Issue online: 8 OCT 2012
- Version of Record online: 31 AUG 2012
- Manuscript Revised: 7 MAY 2012
- Manuscript Accepted: 7 MAY 2012
- Manuscript Received: 28 DEC 2011
- beach ridges;
- coastal evolution;
Prehistoric storm records are relatively scarce in most parts of the world. This article presents storm records derived from coral rubble-based geological archives of the Houtman Abrolhos Archipelago located off the west coast of Australia, where the southernmost coral reefs of the Indian Ocean are found. Winter storm swell from the circum-Antarctic ‘Brave Westerlies’, as well as tropical cyclone waves, have left numerous ridge systems on dozens of islands of the archipelago, all composed of coral rubble from adjacent reefs. At three islands, seven ridge systems were dated by three different methods: U-series (68 dates), radiocarbon (64 dates), electron spin resonance (7 dates); 139 radiometric dates span the last 5500 years of the Holocene. In contrast to the geomorphological interpretation, the age sequences show ‘inversions’, hiatuses and different ages for the same ridge, all pointing to complicated ridge formation processes. Time gaps, some exceeding 1000 years, are interpreted as phases of erosion and not as phases without storm activity. Copyright © 2012 John Wiley & Sons, Ltd.