Search for "Archean" in article titles:

1. Archean: The Archean (or Archaean) eon is an interval of geologic time of about 1.4 billion years, beginning with the formation of Earth's crust and the oldest Earth rocks 3,960-3,800 million years ago (mya) and continuing ... [100%] 2023-02-04
2. Archean: The Archean (or Archaean) eon is an interval of geologic time of about 1.4 billion years, beginning with the formation of Earth's crust and the oldest Earth rocks 3,960-3,800 million years ago (mya) and continuing ... [100%] 2023-02-04
3. Archean: The Archean (Template:PronEng, also spelled Archaean, formerly called the Archaeozoic (Template:IPA), also spelled Archeozoic or Archæozoic) is a geologic eon before the Proterozoic and Paleoproterozoic, ending 2.5 Ga (billion years ago). Instead of being based on stratigraphy ... [100%] 2023-03-28 [Geologic time scale] [Archaean]...
4. Archean: The Archean Eon (IPA: /ɑːrˈkiːən/ ar-KEE-ən, also spelled Archaean or Archæan), in older sources sometimes called the Archaeozoic, is the second of the four geologic eons of Earth's history, preceded by the Hadean Eon and followed by ... (Earth) [100%] 2024-05-03 [Archean] [Precambrian geochronology]...
5. Archean: The Archean Eon (IPA: /ɑːrˈkiːən/ ar-KEE-ən, also spelled Archaean or Archæan), in older sources sometimes called the Archaeozoic, is the second of the four geologic eons of Earth's history, preceded by the Hadean Eon and followed by ... (Geologic eon, 4031–2500 million years ago) [100%] 2024-09-16 [Archean] [Precambrian geochronology]...
6. Archean System: Archean System (from ἀρχή, beginning), in geology. Below the lowest distinctly fossiliferous strata, that is, below those Cambrian rocks which bear the Olenellus fauna, there lies a great mass of stratified, metamorphic and igneous rock, to which the non-committal epithet ... [70%] 2022-09-02
7. Archean life in the Barberton Greenstone Belt: The Barberton Greenstone Belt of eastern South Africa contains some of the most widely accepted fossil evidence for Archean life. These cell-sized prokaryote fossils are seen in the Barberton fossil record in rocks as old as 3.5 billion ... (Biology) [37%] 2025-02-05 [Origin of life]