topic: geological history of ny state esrt pages 8...
TRANSCRIPT
Topic: Geological History of NY State
ESRT pages 8 & 9
Geological History of New York State
Division of Geological Time
Largest
Unit
Smallest
Unit
Eon: an indefinitely long
period of time.
Precambrian
4600 Ma to 570 Ma
Phanerozoic 570 Ma to present
Ma means million of years ago
ERAS are broken down to Time Periods.
5th/8th Friday
Time Periods are broken down to Epoch.
How the Chart Works
Life on Earth Rocks in NYS Time Distribution
of Fossils
Important
Geological Events
in NYS
Positions of
Landmasses Millions of
Years Ago
Precambrian Events listed on ESRT
Oldest Events
Mesozoic 245 Ma to 65 Ma
Cenozoic 65 Ma to present
Paleozoic 570 Ma to 245 Ma
Why do we know more about the Phanerozoic than the Precambrian, if the Precambrian was a larger span of time?
Paleozoic Era = Ancient Life
Cambrian Period
Mesozoic Era = Middle Life
Cenozoic Period = Recent Life
Age of the Mammals
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Now it’s…
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Geological History of New York State
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