Final answer:
The incorrect statement about soil formation and type is that soil only refers to transported regolith; soil can be either in situ or transported. Other factors such as parent rock composition, topography, time, and climate also affect soil formation.
Step-by-step explanation:
The statement that is NOT true about soil formation and soil type is: "Soil only refers to transported regolith." In fact, soil refers to both in situ (developed in place) and transported regolith, meaning it encompasses a wider variety than just transported material.
The other statements are correct: the thickness of soil can indeed depend on the parent rock composition, topography, and time; regolith is a loose blanket of decayed rock debris; and climate is an important control on the type of soil found in a region.