Early Devonian |
Tapeats
sandstone represents shoreline of rising sea |
Bright
angel shale records lagoons of rising sea |
Muav
limestone records shallow marine platform of rising western sea |
Late
Cambrian limestone records shallow sea |
Ordovician
limestone records shallow marine conditions |
Early
Devonian limestone marks shallow marine conditions |
Silurian
limestone records continuation of shallow seas |
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