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en.wikipedia.org/wiki/Geologic_time_scale

The geologic time scale (GTS) is a system of chronological dating that relates geological strata ... The geology or deep time of Earth's past has been organized into various units according to events which took place. Different spans of time on  ...

www.ucmp.berkeley.edu/help/timeform.php

Online exhibits. Geologic time scale. Take a journey back through the history of the Earth — jump to a specific time period using the time scale below and ...

www.rocksinmyheadtoo.com/TimeLine.htm

Earth Earth's Geologic Geological Time Scale Line Eon Era Period Epoch Life Forms Eons Eras Periods Epochs MYA Paleozoic Mesozoic Cenozoic Modern ...

geology.com/time.htm

Printable Geologic Time Scale - Geologcial Time Line from Geology.com. ... Geologists have divided Earth's history into a series of time intervals. These time  ...

www.infoplease.com/science-health/physical-science/table-geological-periods

It is generally assumed that planets are formed by the accretion of gas and dust in a cosmic cloud, but there is no way of estimating the length of this process.

www.aoml.noaa.gov/outreach/floridaseagrant/pdf_files/TropicalConnections_GeologicalTimeWithMajorEvolutionaryEventsInFossilRecord_KruczynskiFletcher.pdf

The geological time scale is a method of relating the timing and relationship ... The Earth is more than 4.5 billion years old, and an appreciation of the expanse.

www.newworldencyclopedia.org/entry/Geologic_time_scale

Apr 21, 2015 ... Based on radiometric dating techniques, the Earth is estimated to be about 4,570 million years (4570 "Ma") old. The geological time scale is a ...

www.seafriends.org.nz/books/geotime.htm

Geologic Time or the evolution of the planet, in a printable table. ... This extensive time table follows the development of Earth from the moment of the Big Bang ...

hyperphysics.phy-astr.gsu.edu/hbase/Geophys/geotime.html

The vast expanse of geological time has been separated into eras, periods, ... the varieties of fossils found, taken as indicators of a time period in Earth's history.