archean

• Adjetivo obsoleto que se refiere al eón geológico más antiguo (el eón Arcaico) o a algo perteneciente a esa era remota; hoy se usa principalmente como nombre propio en geología.

An obsolete adjective referring to the earliest geological eon (the Archean Eon), or something belonging to that ancient time; now primarily used as a proper noun in geology.

1. Geological eonC2formalscientific

   Relating to the Archean Eon, the second major division of Precambrian time, spanning from about 4 billion to 2.5 billion years ago, characterized by the formation of the Earth's earliest known rocks and the emergence of primitive life.

   Arcaico (eón geológico)

   • The Archean rocks in this region contain some of the oldest minerals on Earth.
   • Geologists study Archean formations to understand the early development of the planet's crust.
   • Fossil evidence from the Archean eon is extremely rare and difficult to find.

   Sinónimosarchaeanarchaeozoicarcheozoic

• Nombre propio relativo a una era geológica concreta, el eón Arcaico, que abarca aproximadamente desde hace 4.000 a 2.500 millones de años, representando el tiempo en que se formó la corteza terrestre y aparecieron las primeras formas de vida.

A proper noun referring to a specific geological eon, the Archean Eon, which spans from about 4.0 to 2.5 billion years ago, representing the time when the Earth's crust formed and early life appeared.

incontable · nombre propio

1. Geological eonC2formalscientific

   The earlier of the two divisions of the Precambrian supereon, spanning from about 4 billion to 2.5 billion years ago, characterized by the formation of the Earth's crust and the appearance of the first life forms.

   Eón Arcaico

   • The Archean eon saw the formation of the first stable continents.
   • Fossils from the Archean are extremely rare due to metamorphism.
   • The atmosphere during the Archean was largely devoid of free oxygen.

   Sinónimosarchaeanarchaeozoicarcheozoic