CALDERA WILDSCAPES
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VOLCANIC HISTORY-  Tweed Region

Going way back to the forces that shaped our landscapes:​


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Graphics courtesy of Australian Geographic
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​The lava flowed far and wide, not only from the main vent (Mt Warning), but also from smaller vents such as
​Mt Doughboy and Egg Rock


Image below from Tweed Volcanic Region by Bruce Graham
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Artists' impression of the original Tweed shield volcano (20 million years ago) and the present erosion caldera

Artists Andy Reimanis and Mark Comport​ - original painting is in the Caldera  Wildscapes Gallery
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Simplified cross section of the layers of rock types deposited during successive lava flows
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Links to more comprehensive geological insights:

Volcanics of Australia's Green Cauldron pdf
Shaping a caldera - forces of wind and rain pdf
​Geological Map of the Tweed Region pdf
Soils of the Border Ranges Region pdf
Tweed Shield Volcano Facts & Figures pdf
  • Home
    • About
    • Contact
  • ART GALLERY
    • Wildscapes Gallery >
      • Artists >
        • Andy Reimanis
        • Leesa Livermore
        • Brenda Bryant
        • Jan Bracher
        • Katherine Castle
        • Ros Oakes
    • Green Cauldron Panorama >
      • Insights
  • Explore
    • Self-drive Photo-trails >
      • Wollumbin / Mt Warning >
        • Insights
      • Mt Nullum Circuit >
        • Insights
      • River Flats Circuit >
        • Insights
      • Oxley-Rous Circuit
      • Doon Doon
      • Lamington NP (Binna Burra)
      • More PhotoTrails
    • Volcanics
    • Biodiversity >
      • Rainforests
      • Flora
      • Fauna
    • Social History
    • Photo Journals >
      • Peter's Tweed Travels
      • Doon Doon AfterNoon
      • Mark's Journeys
      • Living near the Pinnacle
      • The Frog Prince
    • Walking, Canoeing & Cycling
  • E-News
    • Feb. '22
    • Dec. '21
    • Dec. '18
    • April '18
    • Nov. '17
    • Aug. '17
    • May '17
    • Feb. '17
    • Dec. '16
    • Nov. '16
    • Oct.. '16
    • Sept. '16