Final answer:
The Hebgen Lake earthquake in 1959 primarily affected the nearby fault zone, illustrating the impact of tectonic activity and earthquakes on geological structures.
Step-by-step explanation:
The earthquake at Hebgen Lake in 1959, which was larger than magnitude 7, greatly affected the nearby fault zone, known as the Hebgen Lake Fault. This seismic event is a prime example of how tectonic activity can lead to significant geological changes and natural disasters, such as earthquakes and potential impacts on landslides.
Earthquakes can have a wide range of impacts, including damage to human constructions, changes in the local water supply, triggering of landslides, and even influencing volcanic activities. However, in the case of the Hebgen Lake earthquake specifically, the most direct and significant effect was on the fault zone itself, rather than the surrounding environmental features such as the Teton Mountain Range or any volcanic activity nearby.