Nebraska during the Silurian Period
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Llandovery EpochAn EROSIONAL GAP occurs at the start of the Silurian. This unconformity in the rock record is followed by deposition of another dolostone unit.
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Ludlow EpochAnother EROSIONAL GAP occurs at the boundary between the Silurian and Devonian periods. |
The images above are Paleozoic paleogeographic maps of the central United States (from Dr. Ron Blakey- http://jan.ucc.nau.edu/~rcb7/ ) that are based on observations in the geologic record. Nebraska is outlined in yellow. Click HERE to visit Dr. Blakey's website to learn more about paleogeography and how the continents have changed position throughout geologic time.
| In general, Silurian rocks are not widely present across the USA due to later erosion. |
**Image modified after Carlson, M.P., Geology, Geologic Time and Nebraska, Educational Circular No. 10, 1993, University of Nebraska-Conservation and Survey Division, 60p.
| Return to the Paleozoic Time Scale |