Drought uncovers Clare’s geological past

Drought uncovers Clare’s geological past

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Recent low water levels, due to the prolonged drought, have revealed previously unseen rocks on the shore of Lickeen Lake.

The discovery indicates the North Clare lake may have been formed along a zone of folded and faulted rock that resulted from continental collision almost 300 million years ago.

The rocks were discovered by Burren & Cliffs of Moher UNESCO Geopark and Clare County Council geologist Dr. Eamon Doyle and his son Alan while fishing on the lake, which is located between Kilfenora and Ennistymon.

Dr. Doyle explained that while folded and faulted rocks are well known from the Loop Head area of West Clare, particularly around the Bridges of Ross, they have not been recorded in the North Clare area before.

Dr. Doyle said “Once Alan had pointed out the outcrop I immediately saw that the rocks were tilted to a vertical position which is completely different to the almost horizontal layers of rock that we typically find in this area.”

He continued, “What is particularly interesting is that the rocks are oriented across the deepest part of the lake. These layers of folded and faulted rock would have weathered easier than the surrounding rock and when the ice sheets covered Clare 20,000 years ago they would have eroded deeper there and left a 20m deep depression which became what we now know as Lickeen Lake after the ice melted.

“If it hadn’t been for that, the lake would have been shallower and it is unlikely that the water levels in Lickeen would be sufficient to supply most of North Clare. This is a great example of how the 300 million years of geological history has a direct impact on our lives today,” he concluded.

 

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Chief Reporter Pat Flynn has worked as a journalist for almost 30 years. His career began during the late 1980s when, like many aspiring radio presenters of the time, he worked for local pirate radio stations in Clare and Limerick. Pat joined Clare FM in 1990 where he worked as researcher initially and later presented several different programmes including the station's flagship current affairs programme. He was also the station's News Editor and Deputy Controller of Programmes. Despite leaving in 2003 to pursue a career as a freelance journalist, he continues to work with the station to this day. As well as being the Clare Herald’s Chief Reporter Pat is also freelance journalist and broadcaster, contributing to Ireland’s national newspapers and is a regular contributor to national broadcasters.

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