California Specific Exam (CSE) Professional Geologist (PG) Practice Exam

The term that describes bedrock or soil that has been pulverized by high accelerations during many cycles of earthquake shaking is ground shattering. This phenomenon occurs when the intense forces generated by repetitive seismic activities break down the structural integrity of the surrounding materials. The repeated high accelerations can result in significant damage to the geological formations, leading to a state where the original structure of the bedrock or soil is drastically altered, often resulting in a fine, powdery consistency due to the fracturing process.

In the context of geological hazards, understanding ground shattering is crucial, especially in regions prone to seismic activity, as it can lead to various secondary effects, such as increased susceptibility to landslides and reduced stability for structures. Recognizing these effects helps engineers and geologists design safer buildings and infrastructure in earthquake-prone areas.