Here's why:
* Faults are fractures in the Earth's crust where there has been movement. This movement can be horizontal (sliding past each other), vertical (one block moving up or down relative to the other), or a combination of both.
* The presence of many faults indicates that the crust in that area has been under stress. This stress can come from tectonic plate movement, such as collisions, pulling apart, or sliding past each other.
* New York State's geology is complex and includes evidence of past tectonic activity. The Adirondack Mountains, for example, were formed by the collision of ancient continents.
In summary: The existence of numerous faults in New York State is strong evidence that the crust has been subjected to significant tectonic forces throughout its history.