Keywords: Lichenometry, Nigardsbreen, on proximal, crest and distal (side of the moraine furthest from the glacier) slopes on terminal moraines on a glacial foreland.This is to determine if the size of the lichen varies across the moraine and to identify any influencing factors which may be contributing to a size variation.This study develops that started by Haines-Young (1983) who observed larger lichens on the proximal slope of moraines when compared to the crest, which he termed the 'Green Zone'.

It is generally believed that the larger the lichen, the longer it has colonised the surface, and therefore that larger lichen means an older surface.

However, researchers have found a 'Green Zone' and the hypothesis suggests that lichens are larger at the proximal (side of the moraine closest to the glacier) base of terminal moraines (ridge of sediment that is deposited when a glacier retreats) than at other locations (Haines-Young, 1983).

This hypothesis is tested by data which was collected from six dated moraines on the glacial foreland of Nigardsbreen in the Jostedal, Norway.

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cn+" "+name:name)}function remove Class(element,name){var cn=element.class Name,i=cn.index Of(name);i-1&&(element.class Name=cn.split(name).join(""))}function Cookie(){}function add Event Listener(el,type,func){return Event Listener?

el.detach Event("on"+type,func):void 0}function mix(r,s){var prop;for(prop in s)Own Property(prop)&&(r[prop]=s[prop]);return r}function extend(r,s,px,sx){var sp=s.prototype,rp=Object.create(sp);r.prototype=rp,rp.constructor=r,r.superclass=sp,s!, Department of Geography and Development Studies, University of Chester Lichens are a symbiosis of two organisms, algae and fungi, which colonise exposed surfaces and can be measured to date the approximate age of the surface.Five transects were taken across each moraine, each consisting of 3 metre x 3 metre quadrats where the five largest lichens were measured (Innes, 1984: 343).In addition to measuring the lichen thalli diameters, 3 other factors were also measured: aspect, gradient and vegetation cover.These factors are important to determine why the largest lichens are found in a particular location, whether it supports the hypothesis or not.If the data collected from Nigardsbreen supports the 'Green Zone' hypothesis, there are implications for using lichens to date surfaces of unknown age.