If a Fossil Is Encased in a Stratum of Sedimentary

question 38

Multiple Choice

If a fossil is encased in a stratum of sedimentary rock without any strata of volcanic rock (for example, lava or ash) nearby, then it should be ________.

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

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Definitions:

Composition

The process of combining two functions by applying one function to the result of another, typically notated as (f◦g)(x).

Function

A scheme relating a bundle of inputs with a spectrum of viable outputs, under the condition that each input is matched with one output exclusively.

Composition

In mathematics, composition refers to the application of one function to the results of another, denoted as \(f(g(x))\), where \(g\) is applied first and then \(f\).

Function

A connection framework between a pack of inputs and a slew of endorsed outputs, ensuring each input leads to a distinct output.