"Archaean" Example Sentences
1. The archaean rocks of Greenland date back more than 3 billion years.
2. Scientists have discovered evidence of archaean life forms in ancient fossils.
3. The archaean landscapes of Australia have been untouched for millions of years.
4. The archaean era was a time of great geological activity on Earth.
5. Archaean lava flows can be seen in the rocks of Hawaii.
6. The archaean eon was a pivotal time in the formation of the Earth.
7. Microscopic organisms thrived in the archaean oceans.
8. Archaean crystals can reveal important information about the early Earth.
9. Archaean fossils provide clues about the origins of life on our planet.
10. Archaean stromatolites are some of the oldest known living structures.
11. The archaean shield of Western Canada is a vast, ancient landmass.
12. Archaean rocks can hold valuable mineral deposits.
13. The archaean eon is divided into several different periods.
14. Archaean bacteria were some of the earliest life forms on Earth.
15. Archaean metamorphic rocks can be found in many different regions.
16. The archaean atmosphere was very different from what we know today.
17. Many archaean mountains have been eroded away over time.
18. Archaean geology is a complex and fascinating field of study.
19. Archaean sediments can provide important information about the ancient environment.
20. The archaean eon was characterized by frequent volcanic activity.
21. Archaean life forms were well adapted to the harsh conditions of the early Earth.
22. The archaean shield of Western Australia is home to many rare mineral deposits.
23. Archaean microfossils give us insight into the earliest life on Earth.
24. Archaean rocks can be used to study the magnetic field of the early Earth.
25. The archaean eon was a time of great change and evolution on Earth.
26. Archaean bacteria played an important role in shaping the early Earth's atmosphere.
27. Archaean rocks can be used to reconstruct ancient climates.
28. The archaean time period is essential for understanding the history of our planet.
29. Archaean zircons contain valuable information about the early Earth.
30. The archaean rocks of the Pilbara region in Western Australia are some of the oldest on Earth.
Common Phases
1. The
Archaean eon began about 4 billion years ago;
2. During the
Archaean period, Earth's crust was largely made up of igneous rocks;
3. The atmosphere during the
Archaean was mostly composed of methane, carbon dioxide, and water vapor;
4. Life on Earth during the
Archaean was exclusively single-celled organisms;
5. The
Archaean eon ended about 2.5 billion years ago.