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May 28, 2024 · Geologic time, the extensive interval of time occupied by the geologic history of Earth. Formal geologic time begins with the Archean Eon (4.0 billion to 2.5 billion years ago) and continues to the present day. Modern geologic time scales also include the Hadean Eon (4.6 billion to 4.0 billion years ago).
- Epochs
epoch, unit of geological time during which a rock series is...
- Fossil Record
fossil record, history of life as documented by fossils, the...
- Periods
period, in geology, the basic unit of the geologic time...
- International Commission on Stratigraphy
Other articles where International Commission on...
- EONS
eon, Long span of geologic time. In formal usage, eons are...
- ERAS
era, a very long span of geologic time; in formal usage, the...
- Lipalian Interval
Lipalian interval, in geology, time span suggested in an...
- Day
day, time required for a celestial body to turn once on its...
- Epochs
The geological history of the Earth follows the major geological events in Earth's past based on the geological time scale, a system of chronological measurement based on the study of the planet's rock layers (stratigraphy).
This article assembles some of the key events. From evolution to extinction, these are events that have unfolded as part of the Earth timeline. Though opinions vary, we’ve leaped through 4.5 billion years of Earth’s history and provided a general guideline.
The geologic time scale is a way of representing deep time based on events that have occurred throughout Earth's history, a time span of about 4.54 ± 0.05 Ga (4.54 billion years). It chronologically organises strata, and subsequently time, by observing fundamental changes in stratigraphy that correspond to major geological or paleontological ...
The history of Earth concerns the development of planet Earth from its formation to the present day. Nearly all branches of natural science have contributed to understanding of the main events of Earth's past, characterized by constant geological change and biological evolution.
Geoscientists use the geological time scale to assign relative age names to events and rocks, separating major events in Earth’s history based on significant changes as recorded in rocks and fossils. This section summarizes the most notable events of each major time interval.
Feb 28, 2020 · The geologic time scale is a system used by scientists to describe Earth's history in terms of major geological or paleontological events (such as the formation of a new rock layer or the appearance or demise of certain lifeforms).
