How does noise effect the detector output?

Yet Another Book coming. In the mean time consider this. Here we see a noise limiter operation.

Can the peaks cause the amp to saturate or cut off?

What am I seeing here? Is it internal noise, external noise, or oscillations? Could it be a super regenerative wave form? So many questions and no answers.

 The book is linked here:
Noise in Receivers
 It has a threshold action, could it be breaking into oscillations?