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356 million years ago
What's going on here?
- In the Devonian we saw colliding plates build the northern Appalachian Mountains. During the Carboniferous Period (in North America we break this Period into the Mississipian and Pennsylvanian Periods) the collision between supercontinent Gondwana Euramerica intensifies. Mountain building lifts the southern Appalachians. Huge sheets of rocky crust are thrust westward, deep into the interior of the Euramerican continent, building the Ouachita Mountains of Oklahoma
Reconstructing ancient Earth
These remarkable figures are produced by C.R. Scotese and
the PALEOMAP project. Geologists
call these illustrations paleogeographic reconstructions,
because they illustrate the reconstructed geography of our Earth
at some time in the past.
Making a paleogeographic reconstruction begins by examining
several lines of evidence including: paleomagnetism, magnetic anomalies, paleobiogeography, paleoclimatology,
and geologic history. By combining all available evidence,
geologists are able to construct paleogeographic maps, such
as these, that interpret
how the geography might have appeared at a specific location
and time in the past. Paleogeographic maps are continually
being refined as more
evidence is collected.
To find out more about how paleogeographic reconstructions
are made visit the PALEOMAP project site.
Move forward or back in time.
| 650 |
Time in millions of years. Jump back to visit any time!
Scotese, C. R., 1997. Paleogeographic Atlas, PALEOMAP Progress Report 90-0497, Department of Geology, University of Texas at Arlington, Arlington, Texas, 37 pp.
| Into Earth | | Putting
the pieces toge ther | | Action
at the edges |
| National Parks by Tectonic Regions
| Earth through time | | Detailed
version: This Dynamic Earth |