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Biology 8 Online
OpenStudy (anonymous):

How was the Canyonlands wilderness formed?

OpenStudy (anonymous):

do u have answers we can choose from?

OpenStudy (anonymous):

nope :( and i cant find it online

OpenStudy (anonymous):

oh : (

OpenStudy (anonymous):

A warm shallow sea again flooded the region near the end of the Pennsylvanian. Fossil-rich limestones, sandstones, and shales of the gray-colored Honaker Trail Formation resulted. A period of erosion then ensued, creating a break in the geologic record called an unconformity. Early in the Permian an advancing sea laid down the Halgaito Shale. Coastal lowlands later returned to the area, forming the Elephant Canyon Formation. Large alluvial fans filled the basin where it met the Uncompahgre Mountains, creating the Cutler red beds of iron-rich arkose sandstone. Underwater sand bars and sand dunes on the coast inter-fingered with the red beds and later became the white-colored cliff-forming Cedar Mesa Sandstone. Brightly colored oxidized muds were then deposited, forming the Organ Rock Shale. Coastal sand dunes and marine sand bars once again became dominant, creating the White Rim Sandstone.

OpenStudy (anonymous):

i think thats the answer

OpenStudy (anonymous):

if it ddnt help look here

OpenStudy (anonymous):

thanks!

OpenStudy (anonymous):

ur welcome!

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