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In the geologic record the Eoarchean (also spelled Eoarchaean) Era or erathem is the earliest time following the solidification of Earth's crust. [1]

22 relations: Abiogenesis, Acasta Gneiss, Apatite, Archean, Bar (unit), Canadian Shield, Carbon-12, Chronostratigraphy, Crust (geology), Era (geology), Erathem, Geologic record, Geologic time scale, Greek language, Hadean, International Commission on Stratigraphy, Isua Greenstone Belt, Late Heavy Bombardment, Nuvvuagittuq Greenstone Belt, Paleoarchean, Quebec, Vaalbara.


Abiogenesis (Brit.: U.S.), or biopoiesis, is the natural process of life arising from non-living matter, such as simple organic compounds.

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Acasta Gneiss

The Acasta Gneiss is a tonalite gneiss in the Slave craton in Northwest Territories, Canada.

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Apatite is a group of phosphate minerals, usually referring to hydroxylapatite, fluorapatite and chlorapatite, with high concentrations of OH−, F− and Cl− ions, respectively, in the crystal.

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The Archean Eon (also spelled Archaean; formerly Archaeozoic, also spelled Archeozoic or Archæozoic) is a geologic eon before the Proterozoic Eon, before 2.5 Ga (billion years), or.

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Bar (unit)

The bar is a metric (but not SI) unit of pressure exactly equal to Pa.

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Canadian Shield

The Canadian Shield, also called the Laurentian Plateau, or Bouclier Canadien (French), is a large area of exposed Precambrian igneous and high-grade metamorphic rocks (geological shield) that forms the ancient geological core of the North American continent (North American or Laurentia craton), covered by a thin layer of soil.

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Carbon-12 is the more abundant carbon of the two stable isotopes, amounting to 98.93% of the element carbon; its abundance is due to the triple-alpha process by which it is created in stars.

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Chronostratigraphy is the branch of stratigraphy that studies the age of rock strata in relation to time.

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Crust (geology)

In geology, the crust is the outermost solid shell of a rocky planet or natural satellite, which is chemically distinct from the underlying mantle.

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Era (geology)

A geologic era is a subdivision of geologic time that divides an eon into smaller units of time.

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In stratigraphy, paleontology, geology, and geobiology an erathem is the total stratigraphic unit deposited during a certain corresponding span of time during an era in the geologic timescale.

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Geologic record

The geologic record in stratigraphy, paleontology and other natural sciences refers to the entirety of the layers of rock strata — deposits laid down by volcanism or by deposition of sediment derived from weathering detritus (clays, sands etc.) including all its fossil content and the information it yields about the history of the Earth: its past climate, geography, geology and the evolution of life on its surface.

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Geologic time scale

The geological time scale (GTS) is a system of chronological measurement that relates stratigraphy to time, and is used by geologists, paleontologists, and other Earth scientists to describe the timing and relationships between events that have occurred throughout Earth’s history.

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Greek language

Greek or Hellenic (Modern Greek: ελληνικά, elliniká, "Greek", ελληνική γλώσσα, ellinikí glóssa, "Greek language") is an independent branch of the Indo-European family of languages, native to the southern Balkans, the Aegean Islands, western Asia Minor, parts of northern and Eastern Anatolia and the South Caucasus, southern Italy, Albania and Cyprus.

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The Hadean is the first geologic eon of Earth and lies before the Archean.

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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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Isua Greenstone Belt

The Isua Greenstone Belt is an Archean greenstone belt in southwestern Greenland.

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Late Heavy Bombardment

The Late Heavy Bombardment (abbreviated LHB and also known as the lunar cataclysm) is a hypothetical event thought to have occurred approximately 4.1 to 3.8 billion years (Ga) ago, corresponding to the Neohadean and Eoarchean eras on Earth.

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Nuvvuagittuq Greenstone Belt

The Nuvvuagittuq Greenstone Belt (NOO-voo-AG-it-tuck) (NGB) is a sequence of metamorphosed mafic to ultramafic volcanic and associated sedimentary rocks (a greenstone belt) located on the eastern shore of Hudson Bay, 40 km southeast of Inukjuak, Quebec.

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The Paleoarchean (also spelled Palaeoarchaean (Formerly known as early Archean)) is a geologic era within the Archaean.

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Quebec (or; Québec)According to the Canadian government, Québec (with the acute accent) is the official name in French and Quebec (without the accent) is the province's official name in English; the name is.

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Vaalbara is Earth's theorized first supercontinent.

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Redirects here:

Early Archean, Eoarchaean, Eoarchean Era.


[1] https://en.wikipedia.org/wiki/Eoarchean

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