EARTHSC 1105 Lecture Notes - Lecture 13: Grand Canyon National Park, Grand Canyon Supergroup, Shinumo Quartzite
15 Nov 2016
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Unconformity a contact between two groups of uncomfortable strata. Original horizontality rock layers were deposited horizontal to the earth"s. Withdraw of sea level from the land material. Stomatolite macroscopic dome structures formed by intermittent layers of. Fossil dead organisms which have become mineralized: trace fossil imprints, footprints or other evidence for life but, body fossil mineralize remains of the actual body of the organism. Transgression intrusion of sea level onto land without preservation of the actual organism. Is there a problem here: permian, pennsylvanian, mississippian, devonian, ordovician, silurian, cambrian. Kaibab limestone: limestone formed from caco3 producing photosynthetic, redwall limestone karst topography landscape created by the, chert microcrystalline sedimentary rock made primarily of silica, basalt extrusive igneous rock of mafic composition. Erosion removal of weathered material from its source. Weathering wearing away or rock due to wind or water: use for stone tools, imagine sand without individual grains. Problem colorado plateau is higher than surrounding areas, but rivers cant.
