You Observe a Distinct,red Sandstone Rock Body About 50 M

Multiple Choice

You observe a distinct,red sandstone rock body about 50 m thick that is depositionally overlain by a red shale with interbedded gypsum and you follow this boundary in the rock bodies for 1 km until you cross a fault which has displaced the boundary between the two rock bodies.You walk along the fault and see a boundary between a 50 m thick red sandstone and overlying red shale interbedded with gypsum.You conclude ________.

A) this is impossibly complex; the fault broke up all the rocks
B) this new exposure of sandstone,shale and gypsum must be a different age rock unit
C) the stratigraphic section must have been inverted by the deformation; the rocks are upside down
D) the second exposure of sandstone,shale and gypsum correlates to the first,and the boundary between the sandstone and shale is the same stratigraphic horizon