Question

Which of the following statements are true regarding the geologic timescale? A. It is based on data from fossils B. it is only used in English-speaking countries C. It was not created until after the discovery of radioactivity D. It was first created using relative dating and correlation

Answer 1

It is based on data from fossils. So, option a is true statement regarding the geologic timescale.

What is Geological timescale?

• Events in Earth history are "calendared" according to the geologic time scale. It divides all of time into designated units of abstract time called aeons, eras, periods, epochs, and ages, in decreasing order of duration.
• Those geologic time units are counted according to stratigraphy, the correlation and classification of rock strata. The primary method of establishing a geologic time scale, however, is through the use of fossil forms found in rocks.
• The emergence and disappearance of widespread species from the fossil record are used to define the beginnings and ends of ages, epochs, periods, and other intervals.
• The International Chromatography Chart, which shows the links between the major geologic time periods, is one of the standard charts that is most frequently used.

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