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Early Earth also known as proto-earth is loosely defined as encompassing Earth in its first one billion years, or gigayear (Ga, 10 9 y), [1] from its initial formation in the young Solar System at about 4.55 Ga to some time in the Archean eon in approximately 3.5 Ga. [2] On the geologic time scale, this comprises all of the Hadean eon, starting ...
The Hadean (/ h eɪ ˈ d iː ə n, ˈ h eɪ d i ə n / hay-DEE-ən, HAY-dee-ən) is the first and oldest of the four known geologic eons of Earth's history, starting with the planet's formation about 4.6 billion years ago [4] [5] (estimated 4567.30 ± 0.16 million years ago [2] set by the age of the oldest solid material in the Solar System — protoplanetary disk dust particles — found as ...
The first eon in Earth's history, the Hadean, begins with the Earth's formation and is followed by the Archean eon at 3.8 Ga. [2]: 145 The oldest rocks found on Earth date to about 4.0 Ga, and the oldest detrital zircon crystals in rocks to about 4.4 Ga, [34] [35] [36] soon after the formation of the Earth's crust and the Earth itself.
Download 2 [a] is a side-scrolling 1991 shoot 'em up video game published by NEC Avenue for the PC Engine CD-ROM². It is the sequel of Download and also inspired an anime OVA . Gameplay
The Earth's atmosphere was also vastly different in composition from today's: the prebiotic atmosphere was a reducing atmosphere rich in methane and lacking free oxygen. The earliest known life , mostly represented by shallow-water microbial mats called stromatolites , started in the Archean and remained simple prokaryotes ( archaea and ...
The Earth of the early Archean may have had a different tectonic style. It is widely believed that the early Earth was dominated by vertical tectonic processes, such as stagnant lid , [ 19 ] [ 20 ] heat-pipe , [ 21 ] or sagduction , [ 22 ] [ 23 ] [ 24 ] which eventually transitioned to plate tectonics during the planet's mid-stage evolution.
Earth 2150, also known as Earth 2150: Escape from the Blue Planet, is a real-time strategy game, originally published in 2000 by SSI and Polish developer Reality Pump and a sequel to Earth 2140. 2150 was one of the first commercial full-3D games of its kind. A sequel to Earth 2150, Earth 2160, was published in August 2005.
Greenberg's first graphic novel, The Encyclopedia of Early Earth (2013), is a series of interlinking stories set in Early Earth, where her prize-winning short story was also set. Rachel Cooke , reviewing her book in The Guardian , said "her wonderful book already feels like a classic" and compared her to Tove Jansson . [ 9 ]