Answer Happy

Use the physical principles of relative dating to interpret the
geologic history of the cross section below. List the rock
units (A-M) and geologic events (unconformities R and S and the
tilting of some units) in order from the oldest to the
youngest. Briefly explain at least two principles you used to
determine the relative age and order of events.
Cambrian Precambrian G H 1 A Nankoweap Group B O Muav Limestone Bright Angel Shale Tapeats Sandstone Chuar Shales Sedimentary rocks ** Conglomerate Gravel Shale Clay CAPONS Dox Sandstone Shinumo Quartzite Hakatai Shale Basalt S Gravel Zoroaster Granite Geologic Cross Section 2 KEY TO SYMBOLS Siltstone Dolomite R Sandstone Limestone Bass Dolomite GRAND CANYON INNER GORGE Igneous rocks Granite Zone of Unconformity contact metamorphism Basalt Vishnu Schist Metamorphic rocks Schist Gneiss Contact Other features Fault Youngest Oldest