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Reconstructing Early Paleozoic Paleogeography

This article explores the reconstruction of ancient continent arrangements through paleomagnetic, paleoclimatic, geochronologic, tectonic, sedimentologic, biogeographic, and fossil data.

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Reconstructing Early Paleozoic Paleogeography

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  1. EARLY PALEOZOIC EVENTS PALEOGEOGRAPHY Reconstructing the ancient arrangement of the continents requires paleomagnetic paleoclimatic geochronologic tectonic sedimentologic biogeographic fossil data.

  2. EARLY PALEOZOIC EVENTS PALEOGEOGRAPHY Paleomagnetic data

  3. EARLY PALEOZOIC EVENTS PALEOGEOGRAPHY Paleomagnetic data

  4. EARLY PALEOZOIC EVENTS PALEOGEOGRAPHY Paleomagnetic data

  5. EARLY PALEOZOIC EVENTS PALEOGEOGRAPHY Paleomagnetic data

  6. EARLY PALEOZOIC EVENTS PALEOGEOGRAPHY Paleomagnetic data Paleomagnetic evidence provides information on the latitude at which the rocks formed. The orientation of the continent can be determined from the direction to the paleomagnetic pole, as recorded by bits of iron in the rock. Longitudes, however, cannot be determined (which accounts for some of the differences in the paleogeographic reconstructions).

  7. EARLY PALEOZOIC EVENTS PALEOGEOGRAPHY Paleoclimatic data Using rock types paleoclimate can be determined

  8. EARLY PALEOZOIC EVENTS PALEOGEOGRAPHY Paleoclimatic data Paleoclimatic evidence comes from environmentally- sensitive sedimentary rock types: Glacial deposits

  9. EARLY PALEOZOIC EVENTS PALEOGEOGRAPHY Paleoclimatic data Paleoclimatic evidence comes from environmentally- sensitive sedimentary rock types: Coal swamp deposits

  10. EARLY PALEOZOIC EVENTS PALEOGEOGRAPHY Paleoclimatic data Paleoclimatic evidence comes from environmentally- sensitive sedimentary rock types: Reef carbonates

  11. EARLY PALEOZOIC EVENTS PALEOGEOGRAPHY Paleoclimatic data Paleoclimatic evidence comes from environmentally- sensitive sedimentary rock types: Evaporites

  12. EARLY PALEOZOIC EVENTS PALEOGEOGRAPHY Paleoclimatic data Paleoclimatic evidence comes from environmentally- sensitive sedimentary rock types: Evaporites

  13. EARLY PALEOZOIC EVENTS PALEOGEOGRAPHY Ice House vs. Hot House

  14. EARLY PALEOZOIC EVENTS LATE NEOPROTEROZOIC PALEOGEOGRAPHY Gondwanaland Laurentia Baltica Siberia

  15. EARLY PALEOZOIC EVENTS LATE NEOPROTEROZOIC PALEOGEOGRAPHY

  16. EARLY PALEOZOIC EVENTS LATE NEOPROTEROZOIC PALEOGEOGRAPHY Late Proterozoic Glaciation (Ice House)

  17. EARLY PALEOZOIC EVENTS CAMBRIAN PALEOGEOGRAPHY Cambrian named after Cambria, latin for Wales named by Adam Sedgewick (1830’s)

  18. EARLY PALEOZOIC EVENTS CAMBRIAN PALEOGEOGRAPHY Continents have moved off poles Glaciers have melted Sea level rising Epeiric seas begin to develop

  19. EARLY PALEOZOIC EVENTS CAMBRIAN PALEOGEOGRAPHY Global temperatures warm Formation of Iapetus Ocean (proto-Atlantic) Ouachita Trough begins to develop Ouachita Trough

  20. Early Cambrian EARLY PALEOZOIC EVENTS CAMBRIAN PALEOGEOGRAPHY

  21. Early Cambrian EARLY PALEOZOIC EVENTS CAMBRIAN PALEOGEOGRAPHY Shallow seas cover many continents Evaporite rocks deposited near equator

  22. EARLY PALEOZOIC EVENTS CAMBRIAN PALEOGEOGRAPHY Development of a shallow epeiric or epicontinental sea Continent situated on the equator, so waters most likely warm Significant carbonate deposits accumulate Deep water sediments (shales) are accumulating on margins

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