which statement explains one reason why unconformities occur?\nrocks along a fault break and move.\nigneous…

which statement explains one reason why unconformities occur?\nrocks along a fault break and move.\nigneous rock forms at earths surface.\nno sediment is deposited over a long time.\nigneous rock forms between sedimentary layers.

which statement explains one reason why unconformities occur?\nrocks along a fault break and move.\nigneous rock forms at earths surface.\nno sediment is deposited over a long time.\nigneous rock forms between sedimentary layers.

Answer

Brief Explanations:

Unconformities are gaps in the geologic record. When no sediment is deposited over a long time, it creates a break in the sequence of sedimentary layers, which is a type of unconformity (non - conformity).

  • Option 1 (Rocks along a fault break and move) is related to faulting (a type of structural deformation) and not directly to unconformities.
  • Option 2 (Igneous rock forms at Earth’s surface) is about volcanic activity and does not explain the gap in the rock record (unconformity).
  • Option 4 (Igneous rock forms between sedimentary layers) is about igneous intrusions (like sills) and not about the absence of sedimentary deposition which causes unconformities.

Answer:

No sediment is deposited over a long time.