In this laboratory experiment, you will write a narrative history of a rock section found in the grand canyon. you will describe and explain the events starting with the vishnu schist forming and ending with the unconformity above the redwall limestone in the mississippian. your description should include environmental changes.
• sea level lowered, and the esplanade sandstone was deposited in a beach
environment.
• erosion, and the sea level rose.
• hermit shale deposited in a deeper sea.
• sea level drops, returning the area to a beach environment where the
coconino sandstone was deposited.