Al,
Geophone sensors are very good. These use a magnet on a spring moving inside a coil. It generates voltage proportional to the velocity of the magnet, different from a MEMS sensor that produces a signal proportional to acceleration, and the Geophone responds over a range from a few Hz to 1000Hz. There is a small peak in the response at 10Hz but you can flatten that with a parallel resistor.
They both can be used to make a Seismograph. For example Silicon Chip published a MEMS sensor seismograph with an Arduino and they recently upgraded it by adding the Geophone sensor, because it is much more sensitive than the MEMS sensor.
Here is a typical one from one of the many ebay sellers, this link is merely to show you the picture of one:
https://www.ebay.com/itm/Geophone-Se...gAAOSw05tacOhs