Archean and proterozoic are two geologic eons. Archean eon lasted 3900-2500 million years ago. This epoch produced the oldest rocks. The earth's atmosphere once included methane, carbon monoxide, ammonia, etc.
Proterozoic eon was 2500-540 million years ago. Eukaryotes appeared towards the end of the Proterozoic.
Archean and Proterozoic have commonalities and differences. Both ages have cyanobacterial stromatolites. This parallels both times.
Archean weather was hot and damp, while proterozoic weather was different. Proterozoic ice ages occurred twice.
This is further explained below.
Generally, The Archean eon and proterozoic eon are two of the four main divisions in the geologic time scale.
The Archean eon spans the period between 3900 and 2500 million years ago. The earliest rocks that are known to exist were deposited during this time. Methane, carbon monoxide, ammonia, and other gases made up the earth's atmosphere at that period.
The Proterozoic eon spans the period between 2500 and 540 million years ago. The emergence of eukaryotes occurred towards the end of the Proterozoic period.
The Archean and Proterozoic eons share certain characteristics and vary in others. Stromatolites produced by cyanobacterial colonies existed in both periods. One resemblance between the two periods is this.
In conclusion, The proterozoic period's temperature and weather were distinct from those of the Archean age, which had hot and humid weather. There were two ice eras throughout the proterozoic period.
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