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- Title
Geological constraints and.
- Authors
Muzikar, Paul
- Abstract
The Al-Be burial dating method has been applied to a range of problems in geochronology. This technique allows us to determine the burial age of quartz-containing sediments, by measuring the concentration of cosmogenic Be and Al in the quartz. In its most basic form, the method assumes a simple history (single exposure episode followed by burial) for the quartz clasts. Balco and Rovey have recently developed an innovative isochron version of this method, which can take into account a more complicated exposure history for the quartz, and used it to date a series of glacial tills. There can be constraints on the slope and intercept of the isochron, depending on how we model the geology of the Balco-Rovey approach. We show how to take these constraints into account when fitting the slope and intercept; we apply a Bayesian approach, in which there is a straightforward way to implement constraints. We discuss the important issues that arise; a variety of choices must be made in choosing the prior, both in what geological insights to include and in how to include them. Copyright © 2011 John Wiley & Sons, Ltd.
- Subjects
COSMOGENIC nuclides; ARCHAEOLOGICAL dating; SEDIMENTS; GEOLOGICAL time scales; BAYESIAN analysis
- Publication
Earth Surface Processes & Landforms, 2011, Vol 36, Issue 7, p946
- ISSN
0197-9337
- Publication type
Article
- DOI
10.1002/esp.2124