The type of plate boundary that does not create or destroy crust is a transform boundary.

Here's why:

* Transform boundaries occur when two tectonic plates slide past each other horizontally.

* This movement causes earthquakes, but it doesn't result in the creation of new crust (like at divergent boundaries) or the destruction of existing crust (like at convergent boundaries).

Let me know if you'd like to learn more about any of these types of boundaries!