which correctly lists three different geologic features that help scientists determine the relative ages of…

which correctly lists three different geologic features that help scientists determine the relative ages of rocks by their positions?\nmagma, erosion, and intrusions\nerosion, magma, and cross - cutting relationships\nintrusions, index fossils, and magma\nindex fossils, intrusions, and cross - cutting relationships

which correctly lists three different geologic features that help scientists determine the relative ages of rocks by their positions?\nmagma, erosion, and intrusions\nerosion, magma, and cross - cutting relationships\nintrusions, index fossils, and magma\nindex fossils, intrusions, and cross - cutting relationships

Answer

Brief Explanations:

Index fossils are fossils used to define and identify geologic periods. Intrusions are younger than the rocks they intrude. Cross - cutting relationships state that a geologic feature which cuts across another is younger than the feature it cuts. These are all useful for determining relative rock ages. Magma and erosion are not as directly related to determining relative rock ages in the context of this question.

Answer:

D. index fossils, intrusions, and cross - cutting relationships