The erosion factor in sea floor investigations of prehistoric occupation deposits

05th January 2014

Charlie E. Dortch

Introduction*

Assessing erosion of submerged occupation sites by high energy water flow is of paramount importance in underwater prehistoric investigations. Surge, waves, currents and tidal action in marine waters generally have far more destructive power than water flow and waves in estuaries and rivers. Fresh-water lakes provide still gentler conditions favouring the preservation of underwater sites, e.g. the series of former open air sites preserved on the floor of Lake Jasper (34″25’S, 115″40’E) in the far southwest of Western Australia (Dortch 1997a). Yet even there investigators had to take into account the possibility of stone artefacts being redeposited by wind-generated waves (Dortch and Godfrey 1990:30–31).

*Note that an abstract was not included with this paper, and so the introductory paragraph has been included here instead of the abstract.

Dortch, C.E.
The erosion factor in sea floor investigations of prehistoric occupation deposits
December 1998
47
30–32
Article
You must be a member to download the attachment ( Login / Sign up )