Correlation is the matching up of similar fossils found in distant locations.

Lithologic

Explanation:

As correlation is trying to fit the sedimentary strata found in distant places and the geologist tries to found out the relative age the widespread use of the strats and they are especially in different  the layers and there might be the transgression and the regression of the rocks as the fossil is important for doing the long distances and the  certain geophysical methods are needed for this as the electrical method and

Answeroil-shale;