Documents Grand Canyon Rocks Investigation 3 Earth History Grade 6.

Slide 1Grand Canyon Rocks Investigation 3 Earth History Grade 6 Slide 2 Samples Geologists take rock samples (small, representative pieces) to gather information about the…

Documents Geologic Time. Figure 7.1 How Old is the Earth? Historical Records, written word –5000 years...

Slide 1 Geologic Time Slide 2 Figure 7.1 Slide 3 How Old is the Earth? Historical Records, written word –5000 years Bishop Usher (1664) 9:00 AM, Oct. 23, 4004 BC Earth…

Documents Controls on fluvial sedimentary architecture and sediment-fill state in salt-walled mini-basins:...