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Plate Tectonic Reconstructions: Silurian Period

Early Silurian

These maps of major tectonic elements (plates, oceans, ridges, subduction zones, mountain belts) are used with permission from Dr. Ron Blakey at Northern Arizona University. The positions of mid-ocean ridges before 200 Ma are speculative. Click here for an explanation of map symbols.

Additional maps and Paleogeographic globes are available at Dr. Blakey's Global Earth History site.

Ordovician Maps

Silurian Period

Devonian Maps

© 1999 HSU NMH | Last modified 13 July 2004