What is the term for a boundary surface in a sequence of rock strata indicating lack of deposition,where erosion and deformation may have occurred?
A) an unconformity
B) a fault
C) a fossil succession
D) an inclusion

Question

Quizplus · Accepted Answer

An unconformity is a surface that represents a gap in the geologic record, often due to erosion or non-deposition of sediment. This boundary surface can separate rocks of different ages and may have undergone deformation before the resumption of deposition. A fault is a fracture in rock where movement has occurred, but it may not represent a boundary surface between rock layers. A fossil succession refers to the ordered arrangement of fossils in sedimentary rock layers, but it is not a boundary surface indicating lack of deposition. An inclusion is a piece of one rock type that is enclosed within another, which can provide information about the relative ages of the rocks involved, but it is not a boundary surface indicating non-deposition.

What Is the Term for a Boundary Surface in a Sequence