You use a drill rig to explore the subsurface of a large slope for ancient slumps and may encounter any of the following features downhole or in core samples you recover from the drill hole.Which feature is least likely to indicate a failure surface of the slump?

Question

Quizplus · Accepted Answer

A layer of conglomerate is least likely to indicate a failure surface of the slump as it is a sedimentary rock formed by the consolidation of sediments, typically pebbles or gravel, that are not directly related to the stability of the slope. The other options, such as decayed leaves and grasses, high flow of water, and weathered clay-rich regolith, can all indicate changes in the subsurface that could contribute to instability and potential slump failure.

You Use a Drill Rig to Explore the Subsurface of a Large