parent rock
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
In the lower zone, saprolite, scant organic material is mixed with largely unaltered parent rock.
From Textbooks • Jan. 1, 2017
Dr. Schmitz and his team concluded that the new space rock, which they named Öst 65, came from the asteroid that smashed into the same L-chondrite parent rock that littered the ancient seafloor with debris.
From New York Times • Jun. 16, 2016
These space rocks came from the same parent rock and provided evidence for the first asteroid from the collision.
From New York Times • Jun. 16, 2016
When radiometric techniques are applied to metamorphic rocks, the results normally tell us the date of metamorphism, not the date when the parent rock formed.
From Textbooks • Jan. 1, 2015
He examined it closely; yes, it was quartz, the parent rock of gold.
From The Great Gold Rush A Tale of the Klondike by Jarvis, W. H. P. (William Henry Pope)
