Other contributors have said "What are the steps to make ash fall fossils?" is the same question as "How do ash-fall fossils form?" If you believe that these are not asking the same thing and should be answered differently, click here
I got this:
"Unlike most fossil deposits, which consist of scattered bones accumulated over extended periods of time, the ash bed contains mostly articulated remains with bones still joined together...
Fossils are of different types and all types of fossils are formed differently.Most important fossils are petrified fossils which are formed by deposition of minerals in bones of animal.,by...