We currently live in the Holocene Epoch of the Quaternary Period of the Cenozoic Era of the Phanerozoic Eon.
The eon after the Hadean Eon is the Archean Eon. During this eon, significant geological and biological events took place, leading to the development of early life forms on Earth.
The Phanerozoic Eon is the longest division of geological time, spanning approximately the last 541 million years and continuing to the present day. It is further divided into three eras: the Paleozoic, Mesozoic, and Cenozoic eras.
It is the Phanerozoic Eon.
I don't know the plural of eon but the answer is more than 1 eon
The Precambrian.
The smallest unit of geologic time is an age, followed by epoch, period, era, eon, and super eon.
The Archean Eon, which is part of the Precambrian period along with the Proterozoic Eon.
The Archaean eon was a geological eon spanning from around 3800 to 2500 million years ago, comprising the Eoarchean, Paleoarchean, Mesoarchean and Neoarchean eras - a period in which the first continents and oceans sprang up.
An eon is a made up of two or more eras. They are defined in terms of what was happening on the planet in biological and geological terms rather than in number of years. We are now 541 million yeras (Myr) into the current eon - the Phanerozoic eon. Before that was the Proterozoic eon which lasted 1959 Myr, the Archean eon (1500 Myr) and the oldest, the Hadean eon (500 Myr).
The Hadean eon is the earliest geological eon in Earth's history, spanning from the formation of the Earth about 4.6 billion years ago until approximately 4 billion years ago. It is characterized by the planet's initial formation, the development of its early crust, and intense volcanic activity. The name "Hadean" reflects the hellish conditions present during this time, including extreme temperatures and frequent meteorite impacts. This eon precedes the Archean eon, marking the transition to a more stable planetary environment.
It is difficult to give a good time constraint, but it is believed that liquid water was first present in the Hadean Eon between 4.4 billion and 4 billion years ago.
The Eon from 2.5 to 0.542 billion years ago is known as the Proterozoic Eon. It was a crucial period in Earth's history marked by the formation of complex life forms and significant geological changes.