Utah's Geologic History

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Across
  1. 2. a fracture in the earth's surface, most commonly associated with earthquakes
  2. 4. the digging site of an archaeological exploration
  3. 8. 85% of Earth's history, life appears and exists only in the sea. Rock from this era can be seen on Antelope Island
  4. 11. A densely packed salt pan in Tooele County in northwestern Utah. The area is a remnant of the Pleistocene Lake Bonneville
  5. 12. a major division of geological time composed of a number of periods
  6. 15. to make more compact by pressing. The process that created Utah's sandstone geologic features.
  7. 17. The largest to be found in Utah was 1164 pounds and found in the Drum Mountains near Delta.
  8. 18. the part of geologic time that took place 240-65 million years ago; appearance and extinction of dinosaurs; shallow seas give way to sandy deserts; sedimentary rock is formed; Rocky Mountains begin forming
  9. 19. Utah's largest fault line
  10. 20. This is Utah's oldest animal fossil
  11. 21. the wearing away of the earth's surface by water, glaciers, and wind
  12. 23. Utah state fossil
  13. 27. the part of geologic time that took place 570-240 million years ago ; shallow seas cover Utah; trilobites, amphibians, reptiles live in seas; limestone, oil, gas, salt, potash, shale are in rock. Fossil fuels form
Down
  1. 1. The skeleton of this ice age mammal was unearthed during the construction of Huntington Reservoir
  2. 3. activity that brought Utah's mineral resources to the surface
  3. 5. a scientist who studies the history of the earth as recorded in rock
  4. 6. paleontologist from the Carnegie Museum of Pittsburgh. He unearthed a Diplodocus and the most complete Apatosaurus ever discovered. His quarry would eventually become Dinosaur National Monument
  5. 7. Much of Utah's electricity is produced by burning this to make steam
  6. 9. a broken surface or crack. Associated with the origins of Utah's mineral resources
  7. 10. The Great Salt Lake, Utah Lake, and Sevier Lake are all remnants of this ice age lake
  8. 11. mineral or organic matter deposited by water, air or ice hardened into stone by heat and pressure.
  9. 13. fuel such as petroleum, coal, or natural gas that has formed from living matter of a previous geologic time
  10. 14. remaining, leftover, a trace. Utah's largest lakes are left overs of an ice age lake
  11. 16. The site of Utah's first gold discovery
  12. 22. pertaining to the remains of living animals or plants.
  13. 24. pressure from the Pacific Ocean caused the formation of these mountains
  14. 25. an excavation, usually open to the air, from which building stones or fossils are obtained
  15. 26. geologic era that began about 65 million years ago, known as the "Age of Mammals"; minerals occur in rock; canyonlands are carved; ice age occurs glaciers cover northern Utah mountains; Lake Bonneville forms and declines; Great Salt Lake forms; humans appear