archaeozoic

• صفة قديمة تشير إلى أقدم عصر جيولوجي في دهر ما قبل الكمبري، وقد استُبدلت اليوم بمصطلح «الدهر السحيق».

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

1. Geological eraC2formalscientific

   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.

   الدهر الأركي

   • 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.

   المرادفاتarchaeanarchean

• اسم يشير إلى أقدم حقبة جيولوجية في تاريخ الأرض، تمتد من نشأة الأرض قبل نحو 4.6 مليار سنة إلى نحو 2.5 مليار سنة مضت، وتتميز بتكوّن الصخور الأولى وظهور أشكال الحياة البدائية.

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.

غير معدود

1. Geological eonC2formalscientific

   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.

   الدهر السحيق

   • 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.

   المرادفاتarchaeanarchean