Non isotopic dating
The course will briefly outline the fundamental principles and applications of a range of non-radiometric dating techniques used in archaeology, including: amino acid racemization, archaeomagnetism, dendrochronology, electron spin resonance (ESR), and luminescence.
On completion of the course students should have acquired a knowledge and understanding of: - the fundamental principles of each technique and the instrumentation employed to make the measurements; - archaeological applicability and limitations of the various techniques; - the essential differences between non-radiometric and radiometric dating techniques.
Carbon-14 decays at a constant rate, typically over thousands of years.
By measuring its concentrations in a sample, it is possible to determine the age of sample.
Radiocarbon dating is possible in diverse materials, such as charcoal, bones, textiles, foramifera, pollen grains and rock art, to name just a few.
In some instances, ANSTO is capable of radiocarbon dating samples containing just five micrograms of carbon.
To discuss your dating requirements, contact Dr David Fink.
Such information is useful for studies ranging from dating an archaeological artefact or forensic evidence to climate studies using ancient air trapped in glaciers and even for establishing the viability of a potential source of groundwater.[SE] In order to use the K-Ar dating technique, we need to have an igneous or metamorphic rock that includes a potassium-bearing mineral.One good example is granite, which normally has some potassium feldspar (Figure 8.15).Ocean water circulation ANSTO researchers used radiocarbon dating of coral samples collected in 1836 from the Cocos (Keeling) Islands to gain valuable insights into the upward movement of deep ocean waters in the north-western Indian Ocean.Continental glacial cycles Researchers have tested for beryllium-10 and aluminium-26 in exposed rocks to date the ebb and flow of alpine glacier systems in the southern hemisphere over the past 100,000 years.
ANSTO's dating services have also been applied to Pacific island lake sediments, Aboriginal rock art and archaeological artefacts, to mention just a few of the many applications of these powerful techniques.