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https://flowingdata.com/2012/10/09/history-of-earth-in-24-hour-clock/#:~:text=Because%20it%20uses%2024%20hours%20to%20get%20from,again.%20Jeffrey%E2%80%94%20October%2010%2C%202012%20at%208%3A58%20am
https://www.nps.gov/subjects/geology/geotime.htm
Each hour has 60 minutes, so one minute represents 8,752 “geologic years” (4.6 billion / [365 × 24 × 60]). Finally, each minute has 60 seconds, so each “geologic second” represents 146 years (4.6 billion / [365 × 24 × 60 × 60]). Scaled to our geologic calendar, here are some geologic “holidays”:
https://www.nps.gov/subjects/geology/time-scale.htm
Geologic time scale showing the geologic eons, eras, periods, epochs, and associated dates in millions of years ago (MYA). The time scale also shows the onset of major evolutionary and tectonic events affecting the North American continent and the Northern Cordillera (SCAK, south-central Alaska; SEAK, southeast Alaska; NAK, northern Alaska; CAK central Alaska).
https://flowingdata.com/2012/10/09/history-of-earth-in-24-hour-clock/
Because it uses 24 hours to get from the origin of the Earth to now. Midnight to noon is 12 hours, and noon to midnight is another twelve. Look closer – the labels go from 0 …
https://jan.ucc.nau.edu/lrm22/lessons/timeline/24_hours.html
The Earth forms at 12:00 am, and cools down from a molten state over the next several hours. The oceans form and the asteroid bombardment diminishes. Very primitive single celled life appears very quickly, before 4:00 am, and photosynthetic organisms appear before 6:00 am.
https://geology.com/time.htm
Detailed geologic time scale: The United States Geological Survey has published "Divisions of Geologic Time: Major Chronostratigraphic and Geochronologic Units." It is a much more detailed time scale than the simplified scale shown above. View a copy here.
https://www.dnr.sc.gov/geology/pdfs/education/Geologic%20Time.pdf
Principles Behind Geologic Time Nicholas Steno, a Danish physician (1638-1687), described how the position of a rock layer could be used to show the relative age of the layer. He devised the three main principles that underlie the interpretation of geologic time:
https://www.fossils-facts-and-finds.com/clock_of_eras.html
The Clock of Eras is a graphic aid to help us visualize geologic time. It is nearly impossible for the human mind to comprehend the amount of time that it has taken for the Earth to develop to its present state, yet we try to imagine each stage of its unfolding and the time …
https://www.geosociety.org/documents/gsa/timescale/timescl.pdf
*The Pleistocene is divided into four ages, but only two are shown here. What is shown as Calabrian is actually three ages—Calabrian from 1.80 to 0.781 Ma, Middle from 0.781 to 0.126 Ma, and Late from 0.126 to 0.0117 Ma. The Cenozoic, Mesozoic, and Paleozoic are the Eras of the Phanerozoic Eon.
https://en.wikipedia.org/wiki/Geologic_time_scale
The geologic time scale (GTS) is a system of chronological dating that classifies geological strata (stratigraphy) in time.It is used by geologists, paleontologists, and other Earth scientists to describe the timing and relationships of events in geologic history. The time scale was developed through the study and observation of layers of rock and relationships as well as the times when ...
https://www.ck12.org/earth-science/Life-and-the-Geologic-Time-Scale/rwa/The-History-of-Life-in-24-Hours/
Amazing But True! It’s really hard to understand how old Earth is. There’s just no way to make it seem real. One way scientists try is to compress earth history into something understandable, like a 24-hour day. Our planet formed 4.5 billion years ago; let’s call that midnight. Make the current time is …
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