sedimentary rock is the type of rock that is present at grand canyon national park.
sedimentary rock is the type of rock that is present at grand canyon national park.
what type of rock is present at grand canyon national park?
sedimentary rock
grand staircase









































the grand staircase refers to an immense sequence of sedimentary rock layers that stretch south from bryce canyon national park and grand staircase-escalante national monument, through zion national park, and into the grand canyon national park. 









































in the 1870s, geologist clarence dutton first conceptualized this region as a huge stairway ascending out of the bottom of the grand canyon northward with the cliff edge of each layer forming giant steps. dutton divided this layer cake of earth history into five steps from the youngest (uppermost) rocks:









































bullet::::- pink cliffs,









































bullet::::- grey cliffs,









































bullet::::- white cliffs,
grand staircase
despite roosevelt's enthusiasm and strong interest in preserving land for public use, the grand canyon was not immediately designated as a national park. the first bill to establish grand canyon national park was introduced in 1882 by then-senator benjamin harrison, which would have established grand canyon as the third national park in the united states, after yellowstone and mackinac. harrison unsuccessfully reintroduced his bill in 1883 and 1886; after his election to the presidency, he established the grand canyon forest reserve in 1893. theodore roosevelt created the grand canyon game preserve by proclamation on 28 november 1906, and the grand canyon national monument in 1908. further senate bills to establish the site as a national park were introduced and defeated in 1910 and 1911, before the grand canyon national park act was finally signed by president woodrow wilson in 1919. the national park service, established in 1916, assumed administration of the park.
grand canyon national park