Incorrect Question 8 Examine This Diagram Showing The Stratigraphy Of The Grand Canyon Between Which Two Rock Units Wou 1 (85.8 KiB) Viewed 45 times
Incorrect Question 8 Examine this diagram showing the stratigraphy of the Grand Canyon. Between which two rock units would you find an example of a DISCONFORMITY? Grand Canyon's Three Sets of Rocks Layered Paleozoic Rocks 1. Kaibab Formation (Fm) 2. Toroweap Formation 3. Coconino Sandstone 4. Hermit Formation 5. Supai Group 6. Surprise Canyon Fm 7. Redwall Limestone 8. Temple Butte Fm 9. Muav Limestone 10. Bright Angel Shale 11. Tapeats Sandstone The Great Unconformity Grand Canyon Supergroup Rocks 12. Sixtymile Formation 13. Chuar Group 14. Nankoweap Fm 15. Unkar Group Tonto Group 10 Vishnu Basement Rocks Grand Canyon Supergroup Rocks Redwall Limestone and Supal Group Layered Paleozoic Rocks Hermit Formation and the Supal Group 3 Vishnu Basement Rocks and the Grand Canyon Supergroup Rocks Vishnu Basement Rocks and the Tonto Group Vishnu Basement Rocks 16. Schists 17. Granites 18. Elves Chasm Gneiss Layer age in millions Layer thickness in feet of years 270 350 273 275 280 300 320 285-315 1,000 340 250 385 505 515 300 525 <740 0-75 500 0:50 450 350 0-200 200 740-770 5.200 900 370 1,100-1,200 6,800 60-1840 Unknown 070.5 pts Question 5 An isotope of Unobtanium decays to an atom of Adamantium with a half-life of 2.5 million years. If the isotope ratios of parent and daughter that are measured are consistent with two half-lives having passed, what is the age of the rock containing these isotopes? O 25 million years 1.25 million years O 5 million years 0/0.5 pts O 2.5 million years
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