surficial

Definitions

Examples

• Surficial, sur-fish′al, adj. formed on the surface, as opposed to Subterranean.

• My foot-rule, my rough scale plans and piled-up figures of cubic capacity and surficial area carried all before them.

• The very use of the terms "secondary" and "primary" has suggested antithesis between surficial and deep ores.

• Mineral deposits of the "igneous after-effect" type may be profoundly altered through surficial agencies.

• The zinc oxide minerals in the surficial zone also are sometimes colored yellow by small amounts of greenockite.