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Fill in the start and end times from the geologic time scale in your text. The pie charts will be automatically generate Geologic Eras Start Time End...
Geologic Time Scale
How did the geologic time scale come about? Why is the geologic time scale important? Events need to be ordered in time if we are to understand their significance; it isn't very helpful to know the temperature of the sea in which a fossil animal grew if you have no idea when it lived. By putting together thousands and thousands of studies and rock outcroppings, earth scientist gradually wove together the geologic time scale, placing important events from the Earth's history in a time sequence. Initially, the time scale only had the sequence of events, with no actual dates, so the scale is very uniform. However, after absolute ages had been applied, we can see that the divisions don't accurately illustrate the amount of time. We will be using the geologic time scale extensively in this course so it is an important item to memorize.
Web Links
- What are Mnemonics?Links to an external site.
- Understanding Geologic Time (Links to an external site.)Links to an external site.
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