Dating back to it are stromatolites from metamorphic rocks of the Fortescue and Warrawoona groups in Western Australia.
Dating back to it are stromatolites from metamorphic rocks of the Fortescue and Warrawoona groups in Western Australia. Since the term "Hadean" was introduced to designate geological time from the origin of the earth, this era appears to pick up where the "Hadean" terminates--with the oldest terrestrial rocks 3.8 billion years ago. FTP, name this geologic era, itself divided into the Archeozoic and Proterozoic eras, in which the earliest forms of life appear.
Dating back to it are stromatolites from metamorphic rocks of the Fortescue and Warrawoona groups in Western Australia.
Precambrian