/ http://www.slideshare.net/images/logo.gif / 際際滷Share feed for 際際滷shows by User: ArunaDba https://cdn.slidesharecdn.com/profile-photo-ArunaDba-48x48.jpg?cb=1523112916 Arkeozoikum period (from 4.5 to 2.5 billion years ago) Arkeozpoikum meaning of Life The Ancient, The Arkeozoikum (Archean) is the early days of rock forming the earth's crust which later developed into protokontinen. Rocks of this period are found i ybbbba