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Destruction and Damage for Analysis and Export Permit Application OSL Samples From Umhlatuzana rockshelter

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CaseHeader

Status: 

HeritageAuthority(s): 

Case Type: 

ProposalDescription: 

We apply for a permit to export 8 OSL samples and 4 sediment samples to support dose rate determination. The analysis of these samples will allow age estimations of the sequence from the final MSA, Robberg and terminal Pleistcene periods. These dates illuminate the chronology of the site occupation, as well as providing taphonomic information on the sediments.

Expanded_Motivation: 

The chronology of much of the Pleistocene occupations of Umhlatuzana is poorly understood. OSL dates are only available for the lowest part of the sequence (Lombard et al. 2010). In most levels, charcoal is so poorly preserved as to be virtually absent. Moreover, much of the sequence is close to or beyond the limit of radiocarbon dating. This means that Luminescence dating is the best method to obtain ages for the sequence. Single grain OSL dating has been widely applied to South African Middle Stone Age sites over the past decades. Hence this method will provide ages that allow chronological comparison of the Umhlatuzana sites with the most important sites in southern Africa. Moreover, at previous excavations, sediment slumping and/or post-depositional mixing of sediments has been suggested (Kaplan 1990). Using single grain dating we also obtain information on the importance of mixing within the sampled units. Finally, by obtaining multiple samples from the same depth, we examine if part of the sediment represents a slumped deposit. Summary OSL dating will provide crucial insights in the chronology and taphonomy of the deposits of Umhlatuzana rockshelter and provide essential context to the interpretation of archaeological materials from the site.

ApplicationDate: 

Monday, August 27, 2018 - 16:15

CaseID: 

12846

OtherReferences: 

Heritage Reports: 

Umhlatuzana 2018

ReferenceList: 

CitationReferenceType
Kaplan, J. (1990). The Umhlatuzana Rock Shelter sequence: 100 000 years of Stone Age history. Natal Museum Journal of Humanities 2, 1-94.
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AdditionalDocuments
  1. PDF icon Table with details of the samples to be exported
  2. File list_of_required_details_for_export_sampling_permit-OSL.docx
 
 

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