Which term describes a secondary diamond deposit formed by rivers or streams delivering diamonds to shorelines or the ocean floor?

Which term describes a secondary diamond deposit formed by rivers or streams delivering diamonds to shorelines or the ocean floor?

• A. Marine Deposit
• B. Geochemical Testing
• C. Microdiamond Testing
• D. Drift

Answer: (A)

Secondary diamond deposits form when diamonds weather out of primary sources and are carried by water, settling in places where currents slow. When rivers or streams transport these diamonds to shorelines or onto the sea floor, the resulting deposit is described as a marine deposit. This term specifically names the environment in which the diamonds accumulate—coastal and offshore marine settings—rather than the process or techniques used to study or test diamonds. Geochemical testing and microdiamond testing refer to laboratory analysis methods, not deposit environments. Drift is not the standard label for this environment in diamond geology.

Secondary diamond deposits form when diamonds weather out of primary sources and are carried by water, settling in places where currents slow. When rivers or streams transport these diamonds to shorelines or onto the sea floor, the resulting deposit is described as a marine deposit. This term specifically names the environment in which the diamonds accumulate—coastal and offshore marine settings—rather than the process or techniques used to study or test diamonds. Geochemical testing and microdiamond testing refer to laboratory analysis methods, not deposit environments. Drift is not the standard label for this environment in diamond geology.