Which statements describe geologic gaps? Check all that apply.Geologic gaps happen when volcanoes erupt.When no sediment is deposited for a long time, angularities can result.An unconformity happens when rocks do not follow normal geologic rules.A geologic gap happens when rock is eroded before sediment is deposited.An unconformity occurs when a rock layer’s relative age can be determined.
First, geologists use relative age to determine the of the layers of rock.
They then use index fossils to relate the layers to those in locations.
Index fossils are the remains of organisms that lived on Earth for periods.
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