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Examine the influence of volcanic activity on the development of the Irish landscape with reference to each of the following: - Intrusive features - Extrusive features. - Leaving Cert Geography - Question 1 - 2017
Question 1
Examine the influence of volcanic activity on the development of the Irish landscape with reference to each of the following: - Intrusive features - Extrusive featu... show full transcript
Worked Solution & Example Answer:Examine the influence of volcanic activity on the development of the Irish landscape with reference to each of the following: - Intrusive features - Extrusive features. - Leaving Cert Geography - Question 1 - 2017
Step 1
Intrusive features
Answer
Intrusive features refer to the volcanic formations that occur beneath the Earth's surface. A notable example in Ireland is the Mourne Mountains, which are largely composed of granite formed by the slow cooling of magma beneath the surface.
These features influence the Irish landscape significantly. The cooling and solidification of magma create a variety of landforms, affecting local geology and topography. Additionally, the uplift associated with intrusive features can lead to changes in drainage patterns in the region, contributing to unique ecosystems and habitats.
Step 2
Extrusive features
Answer
Extrusive features are those that form when magma erupts onto the Earth's surface, solidifying into volcanic rock. An example of this in Ireland is the basalt columns at Giant's Causeway, which were formed by the cooling of lava after a volcanic eruption.
These formations impact the Irish landscape by creating dramatic scenery and contributing to soil fertility. The volcanic ash and minerals released during eruptions can enrich the surrounding soil, supporting diverse vegetation. Furthermore, lakes and craters can also develop from the explosive activity, shaping the hydrology of the landscape.