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It is the time line, as well as we know it, for Earth's evolution. Each period is defined by a major geological or biological event. The first geologic time scale was proposed by British geologist Arthur Holmes (1890-1965) in 1913
Precambrian time (4567 to 542 mya)
· Hadean Eon (4567 to 3800 mya)
· Archaeon Eon (3800 to 2500 mya)
· Proterozoic Eon (2500 to 542 mya)
Phanerozoic Eon (542 mya to present)
· Paleozoic Era (542 mya to 251 mya)
o Cambrian Period (542 to 488.3 mya)
o Tommotion Stage (534 to 530 mya)
o Ordovician Period (488.3 to 443.7 mya)
o Silurian Period (443.7 to 416 mya)
o Devonian Period (416 to 359.2 mya)
o Carboniferous Period (359.2 to 299 mya)
o Mississippian Epoch (359.2 to 318.1 mya)
o Pennsylvanian Epoch (318.1 to 299 mya)
o Permian Period (299 to 251 mya)
· Mesozoic Era (251 to 65.5 mya)
o Triassic Period (251 to 199.6 mya)
o Jurassic Period (199.6 to 145.5 mya)
o Cretaceous Period (145.5 to 65.5 mya)
· Cenozoic Era (65.5 mya to today)
o Paleogene Period (65.5 to 23. 03 mya)
o Tertiary Period (65.5 to 2.58 mya)
o Paleocene Epoch (65.5 to 54.8 mya)
o Eocene Epoch (54.8 to 33.7 mya)
o Oligocene Epoch (33.7 to 23.03 mya)
· Neogene Period (23.03 mya to today)
o Miocene Epoch (23.03 to 5.3 mya)
o Pliocene Epoch (5.3 to 2.58 mya)
o Quaternary Period (2.58 mya to today)
o Pleistocent Epoch (2.58 mya to 11,400 yrs ago)
o Holocene Epoch (11,400 yrs ago to today)
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What is geological scale?
The geological time scale organizes a long period of time.
How does the geological time influence the theory of evolution?
Geological " deep " time gives ample time for evolutionary processes to occur.
What does the geological timescale encompass?
IT encompasses all of the geological time period that have happened since the begin of time
Which geological process occurs in the shortest amount of time?
Earthquake is one of the geological process that occurs the shortest amount of time.
How can a geological time scale BEST be reconstructed?
A geological time scale can best be reconstructed using a wide variety of reference books and materials that lay out the chronological order of the geological scale.
Where is the nearest geological fault line to Spring Texas?
The Woodlands has one!
Is 100 years long in geological time?
For most geological processes, 100 years is a very short time, so to answer your question, no.
What has the author James Croll written?
James Croll has written: 'Climate and time in their geological relations' -- subject(s): Geological time, Glacial epoch, Climatology, Ocean currents 'Stellar evolution and its relations to geological time' -- subject(s): Cosmogony
What is time in geology?
Geological time starts at the Big bang. For example, if a scientist says that a 1000years is not a long time in "geological time" they simply mean on a timescale a thousand years in nothing
In geological time eras divide into?
periods
What is the largest divisions of geological time?
The Precambrian.
Which unit of geological time is the least?
It is an epoch.
