A new paper comparing the preservation of tephras in peats and lake sediments:

Watson, E.J., Swindles, G.T., Lawson, I.T. & Savov, I.P. 2016. Do peatlands or lakes provide the most comprehensive distal tephra records? Quaternary Science Reviews, 139, 110-128

Liz Watson is a PhD student at the University of Leeds, co-supervised by Ian Lawson.