Page 11 - Curriculum Visions Dynamic Book

 This is a quarry in Portland. Limestone is one of the world’s most famous building stones.
coral reef: a region of the seabed where corals grow in massive banks.
ore: a rock containing enough of a useful substance to make mining it worthwhile.
porous: containing many small holes or cracks. Quite often the pores are connected together, and liquids, such as water or oil, can move through them.
 Bands of limestone weather differently when exposed to the air, sometimes creating spectacular landscapes called karst scenery.
 A piece of fossil-rich limestone. The body of the limestone is made up of tiny limestone balls (it is oolitic limestone). The reddish colouring is due to iron staining.
 This limestone is made up of corals that became engulfed in a grey, lime-containing mud.
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