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Early Earth

Index Early Earth

The early Earth (sometimes referred to as Gaia) is loosely defined as Earth in its first one billion years, or gigayear. [1]

50 relations: Abiogenesis, Accretion (astrophysics), Aerobic organism, Age of the Earth, Anaerobic organism, Archean, Associated Press, Atmosphere of Earth, Billion years, Biogenic substance, Circumstellar habitable zone, Conglomerate (geology), Earliest known life forms, Earth, Earth and Planetary Science Letters, Eoarchean, Evolution, Excite, Formation and evolution of the Solar System, Geologic time scale, Geological history of Earth, Geophysics, Giant-impact hypothesis, Graphite, Greenland, Hadean, History of Earth, Isua Greenstone Belt, Jack Hills, Late Heavy Bombardment, Magma ocean, Metamorphism, Metasedimentary rock, Meteorite, Mindspark Interactive Network, Narryer Gneiss Terrane, Nature Geoscience, Nature Publishing Group, Oldest dated rocks, Paleoarchean, Photosynthesis, Planetary differentiation, Radiometric dating, Sandstone, Supracrustal rock, TalkOrigins Archive, Timeline of the evolutionary history of life, Western Australia, Year, Zircon.

Abiogenesis

Abiogenesis, or informally the origin of life,Compare: Also occasionally called biopoiesis.

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Accretion (astrophysics)

In astrophysics, accretion is the accumulation of particles into a massive object by gravitationally attracting more matter, typically gaseous matter, in an accretion disk.

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Aerobic organism

An aerobic organism or aerobe is an organism that can survive and grow in an oxygenated environment.

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Age of the Earth

The age of the Earth is 4.54 ± 0.05 billion years This age may represent the age of the Earth’s accretion, of core formation, or of the material from which the Earth formed.

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Anaerobic organism

An anaerobic organism or anaerobe is any organism that does not require oxygen for growth.

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Archean

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).

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Associated Press

The Associated Press (AP) is a U.S.-based not-for-profit news agency headquartered in New York City.

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Atmosphere of Earth

The atmosphere of Earth is the layer of gases, commonly known as air, that surrounds the planet Earth and is retained by Earth's gravity.

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Billion years

A billion years (109 years) is a unit of time on the petasecond scale, more precisely equal to seconds.

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Biogenic substance

A biogenic substance is a substance produced by life processes.

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Circumstellar habitable zone

In astronomy and astrobiology, the circumstellar habitable zone (CHZ), or simply the habitable zone, is the range of orbits around a star within which a planetary surface can support liquid water given sufficient atmospheric pressure.

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Conglomerate (geology)

Conglomerate is a coarse-grained clastic sedimentary rock that is composed of a substantial fraction of rounded to subangular gravel-size clasts, e.g., granules, pebbles, cobbles, and boulders, larger than in diameter.

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Earliest known life forms

The earliest known life forms on Earth are putative fossilized microorganisms found in hydrothermal vent precipitates.

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Earth

Earth is the third planet from the Sun and the only astronomical object known to harbor life.

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Earth and Planetary Science Letters

Earth and Planetary Science Letters is a weekly peer-reviewed scientific journal covering research on physical, chemical and mechanical processes of the Earth and other planets, including extrasolar ones.

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Eoarchean

The Eoarchean (also spelled Eoarchaean) is the first era of the Archean Eon of the geologic record for which the Earth has a solid crust.

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Evolution

Evolution is change in the heritable characteristics of biological populations over successive generations.

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Excite

Excite (stylized as excite) is an internet portal launched in December 1995 that provides a variety of content including news and weather, a metasearch engine, a web-based email, instant messaging, stock quotes, and a customizable user homepage.

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Formation and evolution of the Solar System

The formation and evolution of the Solar System began 4.6 billion years ago with the gravitational collapse of a small part of a giant molecular cloud.

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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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Geological history of Earth

The geological history of Earth follows the major events in Earth's past based on the geologic time scale, a system of chronological measurement based on the study of the planet's rock layers (stratigraphy).

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Geophysics

Geophysics is a subject of natural science concerned with the physical processes and physical properties of the Earth and its surrounding space environment, and the use of quantitative methods for their analysis.

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Giant-impact hypothesis

The giant-impact hypothesis, sometimes called the Big Splash, or the Theia Impact suggests that the Moon formed out of the debris left over from a collision between Earth and an astronomical body the size of Mars, approximately 4.5 billion years ago, in the Hadean eon; about 20 to 100 million years after the solar system coalesced.

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Graphite

Graphite, archaically referred to as plumbago, is a crystalline allotrope of carbon, a semimetal, a native element mineral, and a form of coal.

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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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Isua Greenstone Belt

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

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Jack Hills

The Jack Hills are a range of hills in Mid West Western Australia.

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Late Heavy Bombardment

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

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Magma ocean

Magma oceans exist during periods of Earth's or any planet's accretion when the planet is completely or partly molten.

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Metamorphism

Metamorphism is the change of minerals or geologic texture (distinct arrangement of minerals) in pre-existing rocks (protoliths), without the protolith melting into liquid magma (a solid-state change).

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Metasedimentary rock

In geology, metasedimentary rock is a type of metamorphic rock.

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Meteorite

A meteorite is a solid piece of debris from an object, such as a comet, asteroid, or meteoroid, that originates in outer space and survives its passage through the atmosphere to reach the surface of a planet or moon.

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Mindspark Interactive Network

Mindspark Interactive Network, Inc. was an operating business unit of IAC known for the development and marketing of entertainment and personal computing software, as well as mobile application development.

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Narryer Gneiss Terrane

The Narryer Gneiss Terrane is a geological complex in Western Australia that is composed of a tectonically interleaved and polydeformed mixture of granite, mafic intrusions and metasedimentary rocks in excess of 3.3 billion years old, with the majority of the Narryer Gneiss Terrane in excess of 3.6 billion years old.

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Nature Geoscience

Nature Geoscience is a monthly peer-reviewed scientific journal published by the Nature Publishing Group.

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Nature Publishing Group

Nature Publishing Group is a division of the international scientific publishing company Springer Nature that publishes academic journals, magazines, online databases, and services in science and medicine.

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Oldest dated rocks

The oldest dated rocks on Earth, as an aggregate of minerals that have not been subsequently broken down by erosion or melted, are more than 4 billion years old, formed during the Hadean Eon of Earth's geological history.

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Paleoarchean

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

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Photosynthesis

Photosynthesis is a process used by plants and other organisms to convert light energy into chemical energy that can later be released to fuel the organisms' activities (energy transformation).

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Planetary differentiation

In planetary science, planetary differentiation is the process of separating out different constituents of a planetary body as a consequence of their physical or chemical behaviour, where the body develops into compositionally distinct layers; the denser materials of a planet sink to the center, while less dense materials rise to the surface, generally in a magma ocean.

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Radiometric dating

Radiometric dating or radioactive dating is a technique used to date materials such as rocks or carbon, in which trace radioactive impurities were selectively incorporated when they were formed.

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Sandstone

Sandstone is a clastic sedimentary rock composed mainly of sand-sized (0.0625 to 2 mm) mineral particles or rock fragments.

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Supracrustal rock

Supracrustal rocks (Supra (Latin for "above")) are rocks that were deposited on the existing basement rocks of the crust, hence the name.

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TalkOrigins Archive

The TalkOrigins Archive is a website that presents mainstream science perspectives on the antievolution claims of young-earth, old-earth, and "intelligent design" creationists.

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Timeline of the evolutionary history of life

This timeline of the evolutionary history of life represents the current scientific theory outlining the major events during the development of life on planet Earth.

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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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Year

A year is the orbital period of the Earth moving in its orbit around the Sun.

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Zircon

Zircon is a mineral belonging to the group of nesosilicates.

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Early earth.

References

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

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