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Description

Fermanagh's Marble Arch Caves demonstrate the power of chemical weathering. Rainwater that percolates through the surface slowly erodes the limestone rock below, hollowing out vast caverns. The limestone rock tells a tale of a warmer climate; it preserves the fossilised skeletons of corals and sea sponges that lived in an ancient tropical sea.
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First broadcast:
31 March 2008

Classroom Ideas

Students could do a card-sort with say 9 -10 cards to show the sequence of events leading to creation of the present-day landscape of Fermanagh. Starting with a tropical sea - sea teeming with life; sea creatures dying and sinking to the ocean floor; layers of sediment covering them; sediments turn into rocks such as limestone; creatures turn into fossils; earth movements push ocean floor up; exposed rocks eroded into mountain peaks rainwater creates underground caves. This could be followed by a task whereby the students label the characteristic features of a limestone cave system on a diagram or photo.

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