archaeozoic

An obsolete adjective referring to the earliest geological era of the Precambrian period, now replaced by the term 'Archean'.

• 🇪🇸Adjetivo obsoleto que se refiere a la era geológica más antigua del periodo Precámbrico, hoy sustituido por el término «Arcaico» o «Eón Arcaico». También puede denotar algo antiquísimo o primigenio.

1. Geological era C2 formal scientific

   Relating to or denoting the earlier of the two divisions of the Precambrian era, characterized by the earliest known rocks and the first signs of life.

   • The Archaeozoic era spans from about 4 billion to 2.5 billion years ago.
   • Geologists study Archaeozoic rock formations to understand early Earth.
   • Fossil evidence from the Archaeozoic is extremely rare.

   🇪🇸Arcaico (era geológica)

   Sinónimos: archaeanarchean

incontable

A noun referring to the earliest geological eon, spanning from the formation of the Earth about 4.6 billion years ago to 2.5 billion years ago, characterized by the formation of the first rocks and the emergence of primitive life forms.

• 🇪🇸Sustantivo que designa la era geológica más antigua, que abarca desde la formación de la Tierra hace unos 4600 millones de años hasta hace 2500 millones de años, caracterizada por la formación de las primeras rocas y la aparición de formas de vida primitivas.

1. Geological eon C2 formal scientific

   The earliest eon of Earth's history, spanning from about 4 billion to 2.5 billion years ago, characterized by the formation of the Earth's crust and the emergence of the first simple life forms.

   • The Archaeozoic eon is also known as the Archean eon.
   • Rocks from the Archaeozoic era are found in some of the oldest continental shields.
   • During the Archaeozoic, the Earth's atmosphere was very different from today.

   🇪🇸Eón Arcaico

   Sinónimos: archaeanarchean