Angkor dating radiocarbon

This paper presents two particular aspects of the Greater Angkor Project where radiocarbon dating by AMS specifically added to our knowledge of the history of this ancient capital city.

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Measuring carbon in the Pacific and Indian Ocean to understand better the processes of ocean circulation.

Ocean sediment C-14 data The Lamont-Doherty Earth Observatory of Columbia University has compiled 974 C-14 dates from 309 ocean sediments cores, covering the period from 40,000 years BP to the present worldwide. The USGS Bear Lake Project aims to create records of past climate change for the Bear Lake region,including changes in precipitation patterns during the last 10,000 years and how the size of Bear Lake has varied in the past, to assess the possibility of future flooding and drought.

Nuclear techniques can also be used to determine the origins of an item and even the production process used.

Human skeletal and other remains can be analysed in order to answer questions about the life and diet of ancient people.

Accelerator mass spectrometry (AMS) radiocarbon dating carried out on 15 wood samples collected from the above 8 monuments revealed that most of the wood samples are original, except for the head frame of a doorway in Baksei Chamkrong, the ceiling boards in the northwest tower, and a crossbeam with pivot hole in the southwest tower of the Inner Gallery of Angkor Wat.Potassium argon dating is another technique used to date very old archaeological materials and has been used to date rocks as old as four billion years.For well over five centuries, the Khmer kingdom ruled over a vast territory, including most of what is now known as Cambodia, Thailand, Vietnam and Laos.When dating a sample, scientists use this ratio to calculate the age of the sample.At ANSTO radiocarbon dating utilises the ANTARES accelerator, which requires very small samples compared to standard radiocarbon dating, and can date samples much more precisely.

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