Mesoarchean

From Infogalactic: the planetary knowledge core
Jump to: navigation, search
Mesoarchean Eon
3200–2800 million years ago
view • discuss • edit
-4500 —
-4000 —
-3500 —
-3000 —
-2500 —
-2000 —
-1500 —
-1000 —
-500 —
0 —
Scale:
Millions of years

The Mesoarchean (/ˌmz.ɑːrˈk.ən/, also spelled Mesoarchaean) is a geologic era within the Archean, spanning 3,200 to 2,800 million years ago. The period is defined chronometrically and is not referenced to a specific level in a rock section on Earth. Fossils from Australia show that stromatolites have lived on Earth since the Mesoarchean. The Pongola glaciation occurred at 2,900 million years ago.[1] The first supercontinent Vaalbara broke up during this time around 2,800 million years ago.

References

  1. Lua error in Module:Citation/CS1/Identifiers at line 47: attempt to index field 'wikibase' (a nil value).

External links