When Geologists Trace a Layer of Sediment or Sedimentary Rock

Multiple Choice

When geologists trace a layer of sediment or sedimentary rock laterally, the layers change in composition, texture, or both. These changes result from the ____.

A) metamorphosis of the constituent rocks
B) tilting of the parent rock during formation
C) abrupt disturbances of the depositional environment
D) different rates of weathering in different layers of rock
E) simultaneous operation of different processes in adjacent depositional environments