ISSUE: #01 DECEMBER 2020
- Interstellar dead end | Space Travel
- Hiding From Us
- A Scaly Ancestor
- The Lost Vostok | The amazing journey
- A Vegetable Garden without Soil
- The Petri Dish and It’s Story
- Parkinson’s Disease: A 200-year struggle
- Geological Periods
- Fractals
- Soap and Other Surfactants
- Underwater Web
- History of containers
- How to Be a Friend to Someone with Special Needs
- 100 Seconds To The End Of The World | Doomsday Clock
Topic Last Updated on 05-07-2024
STONE CHRONICLE
Post on topic: Geological Periods.
How can we even begin to understand what was happening on our planet millions of years ago? Our main source of information is rock formations that developed during those distant eras. By studying them, geologists can try to reconstruct the conditions that existed at the time of their formation. For example, if a layer of solidified lava or volcanic ash is found, it is evident that a volcano was erupting nearby. A layer of clay suggests that there was a sea, and quite a deep one. In addition, fossilized remains of ancient animals and plants are often preserved in sedimentary rocks, which can be used to restore their appearance.
If we find a place where several different layers are visible one above the other (this is called a geological outcrop), then it is logical to assume that the higher up the layer, the later it was formed.
