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Words related to tectonics

tec·ton·ics
T t

  • plate tectonics

    a theory of global tectonics in which the lithosphere is divided into a number of crustal plates, each of which moves on the plastic asthenosphere more or less independently to collide with, slide under, or move past adjacent plates.

  • continental drift

    Continental drift is the slow movement of the Earth's continents towards and away from each other.

  • convergent boundary

    a major geologic discontinuity or suture marking the juncture of lithospheric plates that have been joined by plate tectonics.

  • mid-atlantic ridge

    a north-south suboceanic ridge in the Atlantic Ocean from Iceland to Antarctica on whose crest are several groups of islands; shown by plate tectonics to be the axis along which North America has split away from Eurasia, and along which South America has split away from Africa.

  • structural geology

    the branch of geology dealing with the structure and distribution of the rocks that make up the crust of the earth. Also called tectonics. Compare structure (def 7a).
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