Lichen Growth Curves for the Southern Flank of the Mont Blanc Massif, Western Italian Alps
- 1 May 1983
- journal article
- research article
- Published by Taylor & Francis in Arctic and Alpine Research
- Vol. 15 (2) , 193-200
- https://doi.org/10.2307/1550921
Abstract
Growth curves spanning the last 250 yr were constructed for Rhizocarpon geographicum s.l. and Aspicilia cinerea, 2 ubiquitous lichen species that grow on granitic substrates on the south side of the Mont Blanc massif. Ages derived from arithmetic and semilogarithmic plots of control data are nearly accordant over the past 275 yr, but beyond that point derived ages are increasingly discordant. The curves are suitable for dating granitic substrates of unknown age within upper Val d''Aosta between altitudes of .apprx. 1100 and 2000 m. Outside these geographic and altitudinal ranges the growth curves may not be applicable, as suggested by published growth curves for other parts of the Italian Alps.This publication has 1 reference indexed in Scilit:
- A Lichenometric Dating Curve and Its Application to Holocene Glacier Studies in the Central Brooks Range, AlaskaArctic and Alpine Research, 1980