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EARLY PALEOZOIC EVENTS

Explore the tectonic events, cratonic sequences, and climate changes during the Ordovician period. Learn about subduction initiation, Queenston Clastic Wedge, Millburg Volcanic Ashes in Pennsylvania, and more. Discover how the Paleozoic climate shifted from warm and moist to glaciation, leading to mass extinctions.

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EARLY PALEOZOIC EVENTS

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  1. EARLY PALEOZOIC EVENTS ORDOVICIAN PALEOGEOGRAPHY Cratonic Sequences of North American

  2. EARLY PALEOZOIC EVENTS ORDOVICIAN PALEOGEOGRAPHY

  3. EARLY PALEOZOIC EVENTS ORDOVICIAN PALEOGEOGRAPHY

  4. EARLY PALEOZOIC EVENTS ORDOVICIAN PALEOGEOGRAPHY Queenston Clastic Wedge

  5. EARLY PALEOZOIC EVENTS ORDOVICIAN PALEOGEOGRAPHY

  6. EARLY PALEOZOIC EVENTS ORDOVICIAN PALEOGEOGRAPHY Millburg Volcanic Ashes - Pennsylvania

  7. EARLY PALEOZOIC EVENTS ORDOVICIAN PALEOGEOGRAPHY

  8. EARLY PALEOZOIC EVENTS ORDOVICIAN PALEOGEOGRAPHY Subduction initiated on west coast NA Greywackes and volcanics accumulate

  9. EARLY PALEOZOIC EVENTS ORDOVICIAN PALEOGEOGRAPHY Other Tectonic Events Ouachita Trough

  10. EARLY PALEOZOIC EVENTS ORDOVICIAN PALEOGEOGRAPHY Other Tectonic Events Williston Basin

  11. EARLY PALEOZOIC EVENTS ORDOVICIAN PALEOGEOGRAPHY Other Tectonic Events Williston Basin

  12. EARLY PALEOZOIC EVENTS ORDOVICIAN PALEOGEOGRAPHY Other Tectonic Events Williston Basin

  13. EARLY PALEOZOIC EVENTS ORDOVICIAN PALEOGEOGRAPHY Other Tectonic Events Williston Basin

  14. EARLY PALEOZOIC EVENTS ORDOVICIAN PALEOGEOGRAPHY Other Tectonic Events Williston Basin Evaporites Red River Formation

  15. EARLY PALEOZOIC EVENTS ORDOVICIAN PALEOGEOGRAPHY

  16. EARLY PALEOZOIC EVENTS ORDOVICIAN PALEOCLIMATE

  17. EARLY PALEOZOIC EVENTS ORDOVICIAN PALEOCLIMATE

  18. EARLY PALEOZOIC EVENTS ORDOVICIAN PALEOCLIMATE

  19. EARLY PALEOZOIC EVENTS ORDOVICIAN PALEOCLIMATE From the Early to Middle Ordovician, the earth experienced a milder climate in which the weather was warm and the atmosphere contained a lot of moisture. However, when Gondwana finally settled on the South Pole during the Late Ordovician, massive glaciers formed causing shallow seas to drain and sea levels to drop. This likely caused the mass extinctions that characterize the end of the Ordovician, in which 60% of all marine invertebrate genera and 25% of all families went extinct.

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