Which of the Following Statements Is Most Accurate About Dating

question 4

Multiple Choice

Which of the following statements is most accurate about dating a fossil encased in a stratum of sedimentary rock without any strata of volcanic rock (for example, lava or ash) nearby?

• A) The absolute age of the fossil will be easy to determine because the radioisotopes in the sediments will not have been "reset" by the heat of the igneous rocks.
• B) The absolute age of the fossil will be easy to determine because the igneous rocks will not have physically obstructed the deposition of sediment of a single age next to the fossil.
• C) The absolute age of the fossil will be difficult to determine because the "marker fossils" common to igneous rock will be absent.
• D) The absolute age of the fossil will be difficult to determine because radiometric dating of sedimentary rock is less accurate than that of igneous rock.

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