2224196
Beschreibung
Mindmap von rebeccachelsea, aktualisiert more than 1 year ago
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Erstellt von rebeccachelsea
vor mehr als 9 Jahre
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Types of Rock
- Metamorphic
- The new rocks are
harder and more
compact (e.g.
Limestone → Marble,
Clay → Slate).
- Magma heats the rock in the crust.
- Tectonic plates collide and
the build up of heat and
pressure causes rock to
change.
- Pressure from weight of
material above changes rocks
deep in the Earth.
- The new rocks are
harder and more
compact (e.g.
Limestone → Marble,
Clay → Slate).
- Sedimentary
- Layers of sediment compacted
together (called lithification)
- Clays/ Shales
- Formed from eroded mud and clay.
- Older rocks are deposited
in layers and compacted.
- Formed from eroded mud and clay.
- Carboniferous
Limestone/ Chalk
- Formed from Calcium Carbonate.
- Shells and dead sea
creature skeletons
deposited on sea bed and
compacted over time.
- Formed from Calcium Carbonate.
- Soft so may break apart or crumble easily
- Usually the only type to contain fossils
- Usually the only type to contain fossils
- Layers of sediment compacted
together (called lithification)
- Igneous
- Intrusive
- e.g. Granite
- Below Earth's surface.
- Large domes of cooled
magma from large domes
of igneous rock called
bathothiths.
- Cools slowly.
- Large crystals and
coarse texture.
- Large crystals and
coarse texture.
- Magma flows into gaps
in surrounding rock and
forms dykes (vertical
gaps) and sills (horizontal
gaps).
- e.g. Granite
- Extrusive
- e.g. Basalt
- After erupted from volcano onto
Earth's surface.
- Cools quickly.
- Small crystals and
fine texture.
- Small crystals and
fine texture.
- e.g. Basalt
- Magma cools and hardens.
- Intrusive
- Geological Time Scale
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