EEPS 10 2 2025 Colorado Plateau Rocks are almost entirely flat lying Back to the uplifted platform below the deformed craton 1 Deposition Stratigraphic layers revealing geologic history o Foreland Basins o Continental platform o Ancient passive margin 2 Uplift and erosion Deep canyons cut downward as plateau uplifts Hoodoos arches national bridges Nation park lands on the Colorado plateau Parks with Paleozoic passive margin strata Parks with Mesozoic continental terrestrial strata Sedimentary layers are depicted as Stratigraphic columns as a wat to record the different layers of strata at a single place When done at many places they can Be compared to know what the strata were like over a whole region Foreland basin convergence Paleozoic OLD Mesozoic MIDDLE Angular unconformities Vishnu Schist metamorphic black rocks 1 7 BYO Zoroaster Granite Igneous red rocks 1 4 BYO Grand canyon Set 1 Ancient Basement rocks 1 7 1 4 BYO Set 2 Grand canyon supergroup rocks slanted 1 BYO Set 3 Layered Paleozoic rocks 500 250 MYO Tapeats Sandstone 530 MYO Sandstone Mudstone Limestone Transgressive Facies Sequence SEA LEVEL RISES