Which term describes a deep vertical formation at the earth's surface that results from kimberlite or lamproite emplacement?

Which term describes a deep vertical formation at the earth's surface that results from kimberlite or lamproite emplacement?

• A. Pinpoint
• B. Pipe
• C. Pit
• D. Planner

Answer: (B)

A pipe is a deep, vertical conduit-like intrusion formed when kimberlite or lamproite magma rapidly ascends and erupts toward the surface. These vertical bodies act as channels that channel magma from depth to the surface, and they are the typical settings for diamond-bearing rocks. The other terms don’t fit this idea: a pinpoint isn’t a recognized geologic feature for vertical formations, a pit is a surface depression or excavation, and planner isn’t a geological term.

A pipe is a deep, vertical conduit-like intrusion formed when kimberlite or lamproite magma rapidly ascends and erupts toward the surface. These vertical bodies act as channels that channel magma from depth to the surface, and they are the typical settings for diamond-bearing rocks. The other terms don’t fit this idea: a pinpoint isn’t a recognized geologic feature for vertical formations, a pit is a surface depression or excavation, and planner isn’t a geological term.