volcanic activity in an irish landscape

0.0(0)
studied byStudied by 3 people
0.0(0)
full-widthCall Kai
learnLearn
examPractice Test
spaced repetitionSpaced Repetition
heart puzzleMatch
flashcardsFlashcards
GameKnowt Play
Card Sorting

1/8

encourage image

There's no tags or description

Looks like no tags are added yet.

Study Analytics
Name
Mastery
Learn
Test
Matching
Spaced
Call with Kai

No study sessions yet.

9 Terms

1
New cards

irish landscape and volcanic activity

  • shaped by volcanic activity - intrusive and extrusive over 100 million years

  • contributed to formation of landforms across the island

2
New cards

intrusive features

  • develop when magma rises and cools beneath the earth’s surface, forming plutonic rock

  • e.g Leinster Batholith

3
New cards

Leinster Batholith

  • formed 400 MYA during Caledonian orogoney

  • the batholith is a dome shaped pluton extending 120 km from dublin to kilkenny

4
New cards

process of batholith

  • magma cooled and hardened beneath the surface and solidified into granite.

  • remained buried for millions of years - denudation wore away overlying rock over time, exposing granite

  • metamorphic rock like schist still cap on the batholith - impact of tectonic activity on ireland’s landscape

5
New cards

extrusive features

  • formed when magma reaches earth;s surface, cooling quickly to create volcanic rock

  • e.g Antrim-Derry Plateau and the Giant’s Causeway, Irelands most famous extrusive feature

6
New cards

process of Antrim derry PLateau

  • formed 65 MYA as American and Eurasian plates separated and fissures formed in Earths crust - magma erupt onto the surface creative basalt lava flow across Antrim

  • Lava cools quick forming basalt, a rock with small crystals - overtime cooling causes the rock to contract creating hexagonal columns - Giant’s Causeway with 60,000 colums

  • One of irelands reminders of ancient volcanic activity

7
New cards

tectonic activity and landscape formation

  • the movement of Ireland from Supercontinents (laurentia and avalonia) to its location right now involved the closure of the lapetus ocean, caldedonian orogoney and mountain building periods.

8
New cards

other extrusive features

  • Lapteus suture running from Clogerhead in Louth to the Shannon Estuary - marks the formed boundary between the plates

9
New cards

conclusion

  • volcanic activity has a lasting influence on irelands landscape

  • creating intrusive features such as Leinster Batholith and extrusive features such as Antrim Derry Plateau and the almost hidden Lapetus suture