At the next stop on my walk this week the geology walkers took a closer look at the stones that made up the track under our feet. Geraint Owen showed us further examples of stones that revealed evidence of plant life.
Evidence of plant life
Geraint also performed a simple test to prove whether some of the stones were limestone or not – the test was positive as can be seen by the fizzing acid on the surface. From this we were able to deduce that at least some of the stones making up the track had been brought in from elsewhere.
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Geology walkers
Geraint Owen
Evidence of plant life
limestone test
Proof of limestone