the dynamic rock cycle © the earth science education unit copyright is waived for use of this...
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The Dynamic Rock Cycle
© The Earth Science Education UnitCopyright is waived for use of this presentation within the laboratory or classroom
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The Dynamic Rock Cycle
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The Dynamic Rock Cycle
Weathering – breaking up, or breaking down material at the Earth’s surface
Gypsum, weathered by solution in rain water
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The Dynamic Rock Cycle
Clints and grykes – carbonation-solution
Weathering – breaking up, or breaking down material at the Earth’s surface
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The Dynamic Rock Cycle
Chemical action causes “spalling”
Weathering – breaking up, or breaking down material at the Earth’s surface
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The Dynamic Rock Cycle
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The Dynamic Rock Cycle
Erosion
A sandstone bump creates a blind summit
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The Dynamic Rock Cycle
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The Dynamic Rock Cycle
The bed of a shallow stream. Which way is the current flowing?
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The Dynamic Rock Cycle
Deposition – investigating
the movement of sand in water
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Fossil Ripple Marks11
The Dynamic Rock Cycle
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Principle of Superposition 13
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Principle of Original Horizontality 14
The Dynamic Rock Cycle
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The Dynamic Rock Cycle
Cross-bedded sandstones in the Orkneys
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The Dynamic Rock Cycle
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The Dynamic Rock Cycle
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Metamorphism - detecting the distortion
A trilobite - as it lived (and died)
A trilobite as found in the metamorphic slates of North Wales (photograph and drawing)
• By how much has the trilobite been distorted? - 1/2, 1/3, 1/4, 1/5?• By how much have the surrounding rocks been distorted?• By how much has North Wales been distorted?• What might be big enough to cause this scale of distortion?
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The Dynamic Rock Cycle
Deformation –
Break thrust, Lizard
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The Dynamic Rock Cycle
Deformation –
Normal fault,Orgreave opencast site
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The Dynamic Rock Cycle
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The Dynamic Rock Cycle
Crystallisation (and melting)
- Salol
Salol cooled slowly on a warm slide
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The Dynamic Rock Cycle
Crystallisation (and melting)
- Salol
Salol cooled slowly on a cold slide
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‘Lava’ in the laboratory: the treacle investigation
• Which volcano was formed by runny lava?• Which volcano was formed by slow-flowing lava?• Which sort of eruption would you like to watch?
From: ESTA, Science of the Earth 11 - 14, Magma - introducing igneous processes. Sheffield: Geo Supplies
The Dynamic Rock Cycle
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The Dynamic Rock Cycle
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The Dynamic Rock Cycle
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