Knowra Tethys Ocean Tethys Ocean The Tethys Ocean was a vast ancient ocean between northern and southern landmasses during parts of the Paleozoic and Mesozoic eras. Its closure helped form mountain belts from the Alps to the Himalaya.
Tethyan Seaway : A marine passage connecting ocean basins across the region once occupied by the Tethys Ocean. Its changing connections shaped how Tethys exchanged water with neighboring oceans.
Pangaea : A supercontinent that assembled most of Earth's land during the late Paleozoic and early Mesozoic. Tethys occupied the eastern region of Pangaea before the supercontinent fragmented.
Alps : A European mountain system built by convergence and collision between Africa and Eurasia. Tethyan sediments and remnants occur within the Alps, documenting ocean closure.
Plate tectonics : The theory that Earth's lithosphere is divided into moving plates whose interactions shape the planet's surface. Plate motions account for Tethys's opening, migration, and eventual disappearance.
Seafloor spreading : The formation of new oceanic crust as magma rises at a spreading ridge and moves apart. Spreading created oceanic crust within Tethys as surrounding plates separated.
Gondwana : A southern supercontinent that included Africa, South America, Antarctica, Australia, and India. Gondwana formed Tethys's southern margin through much of its history.
Zagros Mountains : A mountain belt in Iran and neighboring regions formed by Arabia–Eurasia collision. The Zagros records the closure of oceanic basins linked to Tethys.
Mediterranean Sea : A sea between Europe, Africa, and Asia, connected to the Atlantic Ocean through the Strait of Gibraltar. It is a surviving western remnant of the broader Tethyan marine realm.
Subduction : The descent of one tectonic plate beneath another into Earth's mantle. Subduction consumed Tethyan ocean floor as adjacent continents converged.
Laurasia : A northern supercontinent comprising much of present-day North America, Europe, and Asia. Laurasia lay north of Tethys after Pangaea began to break apart.
Show all 24