According to CBS, the reason is that the Earth's crust over this region is much older, colder, and more healed versus out west which is far more seismically active. But when a quake does occur here, ...

The 1.6 magnitude happened at 9:40 a.m. about two miles west of Morris Plains, and about three miles below ground.

MORRIS PLAINS — A small earthquake that rattled several North Jersey towns was also felt 200 miles away. The US Geological ...

: 6 small earthquakes shake ground in N.J. on same day A small earthquake caused minor shaking in parts of northern New ...