Archean and Precambrian

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Difference between Archean and Precambrian

Archean vs. Precambrian

The Archean Eon (also spelled Archaean or Archæan) is one of the four geologic eons of Earth history, occurring (4 to 2.5 billion years ago). The Precambrian (or Pre-Cambrian, sometimes abbreviated pЄ, or Cryptozoic) is the earliest part of Earth's history, set before the current Phanerozoic Eon.

Bacteria

Bacteria (common noun bacteria, singular bacterium) is a type of biological cell.

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Banded iron formation

Banded iron formations (also known as banded ironstone formations or BIFs) are distinctive units of sedimentary rock that are almost always of Precambrian age.

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Craton

A craton (or; from κράτος kratos "strength") is an old and stable part of the continental lithosphere, where the lithosphere consists of the Earth's two topmost layers, the crust and the uppermost mantle.

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Geologic time scale

The geologic time scale (GTS) is a system of chronological dating that relates geological strata (stratigraphy) to time.

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Greenland

Greenland (Kalaallit Nunaat,; Grønland) is an autonomous constituent country within the Kingdom of Denmark between the Arctic and Atlantic Oceans, east of the Canadian Arctic Archipelago.

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Hadean

The Hadean is a geologic eon of the Earth predating the Archean.

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History of Earth

The history of Earth concerns the development of planet Earth from its formation to the present day.

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International Commission on Stratigraphy

The International Commission on Stratigraphy (ICS), sometimes referred to by the unofficial name "International Stratigraphic Commission" is a daughter or major subcommittee grade scientific daughter organization that concerns itself with stratigraphy, geological, and geochronological matters on a global scale.

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Oxygen

Oxygen is a chemical element with symbol O and atomic number 8.

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Stromatolite

Stromatolites or stromatoliths (from Greek στρῶμα strōma "layer, stratum" (GEN στρώματος strōmatos), and λίθος lithos "rock") are layered mounds, columns, and sheet-like sedimentary rocks that were originally formed by the growth of layer upon layer of cyanobacteria, a single-celled photosynthesizing microbe.

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Supercontinent

In geology, a supercontinent is the assembly of most or all of Earth's continental blocks or cratons to form a single large landmass.

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Timeline of natural history

This timeline of natural history summarizes significant geological and biological events from the formation of the Earth to the arrival of modern humans.

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Vaalbara

Vaalbara was an Archean supercontinent consisting of the Kaapvaal Craton (now located in eastern South Africa) and the Pilbara Craton (now found in north-western Western Australia).

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Western Australia

Western Australia (abbreviated as WA) is a state occupying the entire western third of Australia.

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Zircon

Zircon is a mineral belonging to the group of nesosilicates.

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