Continents versus tectonic plates
A continent describes a large landmass; a tectonic plate includes crust and rigid upper mantle. Their edges usually differ. The coastline marks the waterline, not the edge of continental crust.
BOUNDARIES
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Plate colours identify regions, not risk.
Plates beneath land and oceans
Many plates carry both continental and oceanic crust. Continental shelves extend underwater, so an offshore part of a plate cannot be classified as oceanic crust from the coastline alone.
Compare South America with its plate
Follow the South American Plate east from Brazil across the Atlantic to the Mid-Atlantic Ridge. Its western edge lies near the Andes, where the Nazca Plate descends beneath South America.
Questions about this map
Is every continent on its own plate?
No. A continent can cross plate boundaries, and a plate can extend beneath a continent and its neighbouring ocean.
Does this map show crust type?
Land and plate outlines alone do not identify crust type. A geological crust dataset is needed to locate the continental-oceanic transition.
WATCH THE MAP EXPLAINED
Continental plate map in five minutes
See why plate outlines differ from continents and how their boundaries move.
Watch on YouTube ↗Sources and map method
Plate outlines use Peter Bird's PB2002 model, distributed by Nordpil under the Open Data Commons Attribution licence. Coastlines and country outlines are Natural Earth public-domain data. Boundary detail is limited by the source model.
- USGS: Our Changing Continent
- USGS: South America and the Nazca Plate region
- Map dataset sources and licences
- PB2002 geometry and licence
- Natural Earth terms
Country lookup compares simplified land outlines with the plate model. Boundaries and historical coastlines are modelled features. This atlas explains geography; it does not predict earthquakes or provide site-specific hazard estimates.