Rock Groups


2. (i) Examine the photograph of this limestone area in Co. Clare and answer the questions that follow.


(a) Circle the rock group below that limestone belongs to.


Igneous Sedimentary Metamorphic


(b) Read the statements below and circle the correct answer as True or False. • Limestone is a permeable and soluble rock. True / False • Limestone is used to create agricultural lime used in farming. True / False • Limestone is formed when lava cools quickly on the Earth’s surface. True / False


(c) What metamorphic rock is formed when limestone is placed under great heat and pressure?


(d) Describe one impact of human activity on a limestone region that you have studied. Remember!


Consider: What are humans doing to the landscape that could impact on a soft limestone landscape? Think of the link with weathering.


(ii) Take a look at the geological map of Ireland opposite. Answer the questions that follow.


(a) What is the most common rock found in Ireland?


igneous group granite


basalt


sedimentary group limestone


sandstone shale


metamorphic group quartzite


marble


(b) Select one igneous or metamorphic rock from the geological map above and describe how it was formed. Include a diagram to support your answer.


46 SKILLS FOR EXAM SUCCESS GEOGRAPHY


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