LIMESTONE PAVEMENTweathering enlarges joints to form deep narrow grooves called GRYKES. Blocks between are called CLINTS.
SWALLOW HOLE
when river reaches limestone it starts to disappear down a swallow hole/sink
UNDERGROUND CAVE
water flowing below ground dissolves limestone forming underground caves/caverns. Caves enlarged by roof collapse.
STALAGMITES/STALACTITES/PILLAR
- water seeps through limestone which contains dissolved minerals.
- when water drips into cavern the mineral solidifies and bulds up over time
- stalaCtites (ceiling)
- stalagmites (floor)
- where stalactites and stalagmites join is called a pillar
RESURGENT RIVERS
rivers pop out at the surface when limestone is on top of impermeable rock.
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