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STRUCRURAL LAND SCAPE GEOGRAPY

Learn about the distinct characteristics of mesa landscapes, including buttes and pointed buttes, as they erode over time forming captivating structures like conical hills and tors. Discover how geological formations like laccoliths, lopoliths, and igneous rocks shape the landscape. Witness how weathering and erosion create diverse landforms and river patterns in this mesmerizing geological setting.

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STRUCRURAL LAND SCAPE GEOGRAPY

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  1. STRUCRURAL LAND SCAPE GEOGRAPY

  2. STRUCTURAL LANDSCAPES

  3. MESA

  4. Features associated with horizontal strata • The underlying sill is exposed to surface erosion • Mesa – the horizontal is longer than the vertical • E.g. Karoo landscape

  5. BUTTE

  6. POINTED BUTTE

  7. CLOSE -UP

  8. Butte and pointed butte • The mesa continues to erode backwards – (scarp retreat) and forms a butte then a pointed butte • The vertical is longer than the horizontal • The cap rock is still present • E.g. Karoo landscape

  9. CONICAL HILL • CAP IS REMOVED • Also named inselberg

  10. INCLINED FEATURES • Underlying rock :laccolith; lopolith; syncline; anticline • Exposed to weathering and erosion - the features are seen • There is a very prominent scarp and dip slope • Trellis river pattern prominent – because of alternating hard and soft rock

  11. MASSIVE IGNEOUS ROCK • If the BATHOLITH OR. . . • On a smaller scale lopolith and lacolith are exposed to erosion a dome is formed • Usually granite rock • Radial river pattern prominent

  12. TORS • If the underlying massive igneous rock has many joints and fissures it is vulnerable to weathering and erosion • The core stones are left that balance on top of each other

  13. Time. . .

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