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Earth Evolution
Earth Materials
Earth Evolution
Geological History
Solar System
Archean Proterozoic Early
Late Paleozoic Mesozoic Cenozoic

Archean Beginnings 3800-2500 Ma
Indirect Fossil Evidence for Earliest Life

Indirect evidence for early life comes from rocks found in the Isua Region in Western Greenland, dated at 3800 million years. These rocks contain graphite with carbon isotopic (12C/13C ) ratios similar to those of living matter, although this ratio might be purely of physical origin meaning that the presence of life on earth 3800 million years ago remains speculative.

3800 million of years old Graphite-bearing Slate,
Isua, Western Greenland

Size: 13cm

The Earliest Life on Earth