Geography test revision Flashcards
What are some sedimentary rock characteristics
Crumbly, soft, porous, strata
How are sedimentary rocks formed?
They are formed when layers of dead creatures and sediment are tightly compacted
What are 3 examples of sedimentary rock?
Sandstone, limestone, Siltstone
What are Igneous rock characteristics?
Very hard, contain crystals
How are igneous rocks formed?
Formed when magma cools and crystalizes
What are 3 examples of igneous rock
Granite, Obsidian, Basalt
Where can igneous rocks be found?
Scotland
Where can sedimentary rocks be found?
Southern England (Yorkshire + Jurassic coast(Dorset) )
What are characteristics of metamorphic rocks?
Layered, Hard, Hard to identify, may contain tiny crystals
How are metamorphic rocks formed?
When intense heat and pressure compact older rocks under the earths surface
What are 3 examples of metamorphic rocks?
Quartzite, Marble, Slate
Where are metamorphic rocks found
Northern Island, Scotland (Mountains)
What is a feature of Dartmoor
Tors
How are Tors formed?
Magma cooled to form granite a long time ago, weaker joints were venerable to weathering and repeated freezing, expanding and thawing caused fragments to become detached.
What rock type is found in Dartmoor?
Igneous