Evolution Quote by Joel Achenbach
““Geologists think the mountains were formed by several distinct tectonic events over the course of 500 million years, a span of time that represents a thick slice of the planet's geological record. The Appalachians once soared as high as the Rockies or even higher. They were most recently thrust upward about 290 million years ago, which makes these mountains older than the bones of the first dinosaurs. They predate the appearance of deciduous trees. They are older than flowers. There were mountains here before the Earth had ever seen anything as fantastic as grass. Some of the rocks were formed in the Precambrian Era, in that gray epoch when life was pondering a wholesale leap from one cell to many.””
About This Quote
Source Article: Smithsonian Magazine, “The Ancient Appalachians”, 2016
The Appalachians are a very old mountain range, formed long before dinosaurs, trees, flowers, or grass existed, illustrating deep geological time.
In simple terms: Very old mountains predate many life forms.
Key Takeaway
Recognize Earth's vast history.
Themes
geology
deep time
mountain formation
evolutionary history
Mood
awe
curiosity
humble
Type
informative
educational
When to use this quote
- education
- museum exhibits
- environmental policy
- climate change discussions
- travel guides
Key Concepts
tectonics
stratigraphy
precambrian life
geological record
Questions to Reflect On
- How does understanding deep time affect our view of humanity’s place?
- What lessons can we draw from ancient landscapes for modern sustainability?
A Different Perspective
Geological timelines can be abstract and hard to visualize for laypeople.
![“Mountains have been formed by one [or other] of the causes of the formation of stone, most probably from agglutinative clay which slowly dried and petrified during ages of which we have no record. It seems likely that this habitable world was in former days uninhabitable and, indeed, submerged…” quote by Avicenna](https://sms4smile.com/quotes/img-quotes/4ce/avicenna-19211_age_mountains-have-been-formed-by-one-or-oth_1402208.jpg)
![“Perhaps no order of mammals presents us with so extraordinary a series of gradations as this [step by step, from humans to apes to monkeys to lemurs] - leading us insensibly from the crown and summit of the animal creation down to creatures, from which there is but a step, as it seems, to the…” quote by Thomas Huxley](https://sms4smile.com/quotes/img-quotes/f0b/thomas-huxley-1183_animal_perhaps-no-order-of-mammals-presents-us_3051.jpg)
