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.
Metamorphic source rocks, the rocks that experience the metamorphism, are called the parent rock or protolith, from proto– meaning first, and lithos- meaning rock.
From Textbooks • Jan. 1, 2017
Some hydrothermal alterations remove elements from the parent rock rather than deposit them.
From Textbooks • Jan. 1, 2017
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
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
Originally they were the washings of distant highlands brought down by rivers; the coloring of the shales and sandstones is that of the parent rock modified, no doubt, by chemical action in sea-water.
From The Book of the National Parks by Yard, Robert Sterling
