SCIENCE|natural and applied sciences|earth sciences|geology
- Eo-aircéach Tagairt "Faofa ag an gCoiste Téarmaíochta, www.tearma.ie Faomhadh an téarma seo mar chuid de Thionscadal Lex"
- ga
- an Ré Eo-aircéach Tagairt "Faofa ag an gCoiste Téarmaíochta, www.tearma.ie Faomhadh an téarma seo mar chuid de Thionscadal Lex"
- ga
- Eoarchean | Eoarchean era | Eoarchaean
- en
- Sainmhíniú "first era of the Archean Eon of the geologic record spanning 431 million years, from the end of the Hadean Eon 4031 Mya to the start of the Paleoarchean Era 3600 Mya" Tagairt "Wikipedia > Eoarchean (22.5.2020)"