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Vermont Landscape Evolution: Continental Drift and Plate Tectonics

Explore the geological history of Vermont through tectonic plate movements, continental drift, and mountain formations from the Grenville supercontinent to the present day. Witness the evolution of landscapes shaped by subduction, orogeny, and the formation of Pangea. Supported by the National Science Foundation and University of Vermont.

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Vermont Landscape Evolution: Continental Drift and Plate Tectonics

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  1. Jens Hilke Landscape Change Project Perkins Geology Museum jhilke@uvm.edu www.uvm.edu/perkins/Landscape/ Index.html supported by National Science Foundation University of Vermont

  2. Credits • "Plate tectonic maps and Continental drift animations by C. R. Scotese,PALEOMAP Project (www.scotese.com)"

  3. Earth’s rigid crust floats on the soft mantle Mantle Crust

  4. Convection currents drive plate movement

  5. = Shows the location of Vermont

  6. NY VT NH GRENVILLESUPERCONTINENT NY VT NH Grenville supercontinent breaks apart

  7. Opening of the Iapetus Ocean

  8. IAPETUS OCEAN NY VT NH PROTO- AMERICA PROTO-EUROPE

  9. IAPETUS OCEAN NY VT NH PROTO- AMERICA PROTO-EUROPE NY VT NH PROTO- AMERICA PROTO-EUROPE Plates reverse direction Subduction creates a chain of island arcs

  10. Island Arcs slam into Proto-American Plate VT NH NY PROTO- AMERICA PROTO-EUROPE Formation of Taconic Mtns (Taconic Orogeny)

  11. VT NH NY PROTO- AMERICA PROTO-EUROPE Acadian Orogeny Formation of the Green Mtns

  12. VT NH NY PROTO- AMERICA PROTO-EUROPE Proto European Plate collides with Proto America • Formation of the White Mtns. (Alleghanian Orogeny) • Champlain Thrust Fault occurs as a result of • these compressional forces

  13. Formation of Pangea

  14. Pangea begins to split apart Forms partial graben in Champlain Valley

  15. Present 570 mya 4.6 bya Phanerozoic Precambrian Present mya 570 mya 458 mya 255 mya 514 mya 425 mya Phanerozoic "Plate tectonic maps and Continental drift animations by C. R. Scotese,PALEOMAP Project (www.scotese.com)"

  16. VT NH NY PROTO- AMERICA PROTO-EUROPE VT NH NY PROTO- AMERICA PROTO-EUROPE

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