Ninety-nine and nine-tenths of the earth’s volume must…
“Ninety-nine and nine-tenths of the earth’s volume must forever remain invisible and untouchable. Because more than 97 per cent of it is too hot to crystallize, its body is extremely weak. The crust, being so thin, must bend, if, over wide areas, it becomes loaded with glacial ice, ocean water or deposits of sand and mud. It must bend in the opposite sense if widely extended loads of such material be removed. This accounts for … the origin of chains of high mountains … and the rise of lava to the earth’s surface.”
About This Quote
This interpretation was drafted with AI assistance. It is one reading of the quote, not the author's own explanation.
The Earth's outer layer is thin, weak, and deforms under massive loads, creating mountains and volcanic activity.
In simple terms: The crust bends under weight, forming mountains and volcanoes.
Key Takeaway
Recognize how pressure shapes geology.
Themes
geology
physics
earth science
Mood
analytical
curious
Type
scientific
educational
When to use this quote
- resource extraction
- climate change
- urban planning
- infrastructure development
- environmental impact
Key Concepts
tectonics
elasticity
mountain formation
Questions to Reflect On
- How do human activities affect crustal stress?
- What can we learn from crustal deformation?
A Different Perspective
Thin crust limits stability under extreme conditions.