Successfully dating rock art in Southern Africa using improved sampling methods and new characterization and pretreatment protocols
| Autor: | Peter Mitchell, Adelphine Bonneau, Fiona Brock, Thomas Higham, Richard A. Staff, David G. Pearce |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
Sample selection
010506 paleontology Archeology 060102 archaeology Geochemistry Sampling (statistics) Weathering Rock art dating 06 humanities and the arts 01 natural sciences law.invention Characterization (materials science) Paint characterization Mining engineering law C AMS dating General Earth and Planetary Sciences 0601 history and archaeology Rock art Radiocarbon dating Geology Pretreatment 0105 earth and related environmental sciences Chronology |
| Zdroj: | IndraStra Global. |
| ISSN: | 2381-3652 0033-8222 |
| Popis: | ©2016 University of Arizona. This is the Author Accepted Manuscript. Please refer to any applicable publisher terms of use. Worldwide, dating rock art is difficult to achieve because of the frequent lack of datable material and the difficulty of removing contamination from samples. Our research aimed to select the paints that would be the most likely to be successfully radiocarbon dated and to estimate the quantity of paint needed depending on the nature of the paint and the weathering and alteration products associated with it. To achieve this aim, a two-step sampling strategy, coupled with a multi-instrument characterization (including SEM-EDS, Raman spectroscopy, and FTIR spectroscopy analysis) and a modified acid-base-acid (ABA) pretreatment, was created. In total, 41 samples were dated from 14 sites in three separate regions of southern Africa. These novel protocols ensure that the 14C chronology produced was robust and could also be subsequently applied to different regions with possible variations in paint preparation, geology, weathering conditions, and contaminants. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|