Entry from British & World English dictionary
Definition of yellow ground in English:
noun[mass noun] Geology
Kimberlite that is exposed at the surface and has become yellow as a result of atmospheric oxidation.
- Quarry operations at the PPC Limeacres limestone mine revealed a small kimberlite pipe, allowing a good view of yellow ground.
- This type of deposit is called eluvium and is commonly known as "yellow ground" in mining terms.
- It is mined from a matrix of weathered clay-like rock (kimberlite) called "yellow ground."
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