Which statement about kimberlite is accurate?

Which statement about kimberlite is accurate?

• A. It is a sedimentary rock
• B. It is an igneous rock that transports diamonds to the surface
• C. It is a metamorphic rock
• D. It forms from weathering processes

Answer: (B)

Kimberlite is an igneous rock that carries diamonds from deep underground up to the surface. It forms from mantle-derived magma and rises rapidly through the crust, erupting in pipes that can trap and deliver diamonds en route. This rapid ascent preserves diamond-bearing material, making kimberlite the primary pathway for diamond-bearing rocks to reach near-surface deposits. The other ways of thinking don’t fit because kimberlite is not formed by sedimentary processes, not a metamorphic rock, and not produced by weathering.

Kimberlite is an igneous rock that carries diamonds from deep underground up to the surface. It forms from mantle-derived magma and rises rapidly through the crust, erupting in pipes that can trap and deliver diamonds en route. This rapid ascent preserves diamond-bearing material, making kimberlite the primary pathway for diamond-bearing rocks to reach near-surface deposits. The other ways of thinking don’t fit because kimberlite is not formed by sedimentary processes, not a metamorphic rock, and not produced by weathering.