Download - Introduction to Karitane
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Introduction to KaritaneIntroduction to Karitane
Natural LandscapesNatural Landscapes
Coastal ProcessesCoastal Processes
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Karitane Looking SouthKaritane Looking South
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Karitane Looking NorthKaritane Looking North
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Sketch of Area of StudySketch of Area of Study
• Donated by Jonny (past student).
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Karitane BackgroundKaritane Background
• Karitane is a unique beach, because it has many features.
• It is located 50km north of Dunedin.
• It is around 2―4km long.• These video clips give some
idea of what you will see on the field trip. (Don’t comment on the voice-over, or camera work please)
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Peninsula FeaturesPeninsula Features
• Karitane Peninsula has many features, it is made up of volcanic and sedimentary rocks.
• Pictured right is rock formation found at the base of the Peninsula.
• In this case it has formed stacks.
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Mother-Child StacksMother-Child Stacks
• The above picture is of the Mother-Child Stacks.
• This is formed by caves that became arches which collasped to form these stacks.
• The Mother stack is larger and protects the child.
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ArchesArches
• This arch is the reminents of a blow-hole which has eroded out.
• Eventually this will collapse and form a isolated inlet or bay.
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BlowholesBlowholes
• This feature is where a collapsed cave is.
• This cave is sunken below waterline and as the tide rises it crashes up causing spray to rise through the hole.
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The SpitThe Spit
• This sand spit is formed by longshore drift, and movement.
• At lowtide the esturary behind the spit is empty.
• At high tide it is filled by incoming water.
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Columnar BasaltColumnar Basalt
• This is a volcanic rock.
• How do you think it got there?
• Why has it not eroded in comparison to the rest of the beach?
• Will it still be there in 50-100years?
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Cliff face/Sediment layersCliff face/Sediment layers
• You can see in this photo that there are many sediment layers that make up the face.
• Each layer is a different colour due to the different chemicals and minerals in the sediment as it was deposited.
• This peninsula was then uplifted by tectonic uplift.
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SummarySummary
• Karitane is a unique place with interesting features.
• Each feature is formed by different processes acting on them.
• This presentation is going on the network for your viewing along with a mind map presentation to assist you after the fieldtrip and before the exams.