Use the link below to share a full-text version of this article with your friends and colleagues. Learn more. Lake sediments of the last years provide a unique record of environmental changes. Methods of dating this record are reviewed and discussed.
Introduction to dating glacial sediments
AMS Lab Radiocarbon Dating Sediments - C14 Beta Analytic
This information is vital for numerical models, and answers questions about how dynamic ice sheets are, and how responsive they are to changes in atmospheric and oceanic temperatures. Unfortunately, glacial sediments are typically difficult to date. Most methods rely on indirect methods of dating subglacial tills, such as dating organic remains above and below glacial sediments. Many methods are only useful for a limited period of time for radiocarbon, for example, 40, years is the maximum age possible.
Radiocarbon Dating of Sediment or Soil
Pretreatment — Sediments are complex systems containing carbon of multiple forms, sizes ranges and sources. Please contact us to discuss the nature of your research objective to ensure the most appropriate pretreatment of your sediment sample. You are welcome to contact us to discuss the pretreatment or request that we contact you after the pretreatment to discuss options for radiocarbon dating. Wet Samples — There is no need to dry the sample.
Please take this quick survey to tell us about what happens after you publish a paper. We present radiometric data from nine lakes across the Tibetan Plateau, and compare their reliability in relation to recent research. Unsupported Pb profiles show, except for one particular lake, non-exponential decline of Pb activity with sediment depth.