Knowra Paleogeography Paleogeography Paleogeography reconstructs the arrangement of continents, oceans, and other geographic features at past geological times using geological and biological evidence.
Plate tectonics : The theory that Earth’s lithosphere is divided into moving plates whose interactions shape the surface. Its motions explain how continents and ocean basins change position through geological time.
Apparent polar wander path : A path traced by the apparent movement of a magnetic pole relative to a continent through time. Comparing paths from different continents reveals their changing relative positions.
Pangaea : A supercontinent that assembled during the late Paleozoic and began breaking apart in the Mesozoic. Its assembly and breakup are among the clearest large-scale changes reconstructed in deep time.
Basin analysis : The study of sedimentary basins, including their formation, structure, and fill. Reconstructed basin settings guide interpretations of sediment accumulation and resource history.
Rodinia : A proposed Neoproterozoic supercontinent whose assembly and breakup preceded Pangaea. Its precise configuration and timing remain uncertain despite evidence for widespread ancient connections.
Paleomagnetism : The record of ancient magnetic fields preserved in rocks and sediments. Magnetic directions in dated rocks help estimate past continental positions and latitudes.
Paleogeographic map : A map showing the reconstructed distribution of land, water, and geographic features at a past time. It is the principal visual product of a paleogeographic reconstruction.
Gondwana : An ancient southern supercontinent comprising the landmasses that became South America, Africa, Antarctica, Australia, and India. Its changing extent and position shaped southern-hemisphere geography across hundreds of millions of years.
Petroleum geology : The study of how petroleum forms, migrates, and accumulates in geological settings. Past seas, shorelines, and sediment pathways help identify potential petroleum systems.
True polar wander : The reorientation of the solid Earth relative to its spin axis, rather than motion of plates alone. It complicates the distinction between continental drift and whole-Earth reorientation in paleomagnetic records.
Show all 29