Question

determine the guide fossils that are used to define and identify subdivision of the geologic time scale??​

Answer 1

Answer:

Index fossils are used in the formal architecture of geologic time for defining the ages, epochs, periods, and eras of the geologic time scale. The evidence for these events is found in the fossil record wherever there is a disappearance of major groups of species within a geologically short amount of time.

Explanation:

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Answer 2

In the formal architecture of geologic time, "index fossils are employed to define the ages, epochs, periods, and eras of the geologic time scale". Wherever major groups of species vanish in a geologically short period of time, evidence for these events can be found in the fossil record.

Explanation:

• Index fossils are used to identify certain geological strata in a column of layers, as the name implies.
• They're simply rock markers that help geologists to rapidly identify different rock units. The utilization of fossils is due to the fact that they are easy to incorporate.
• In addition, what role does the fossil record play in the geologic time scale? Fossils are essential to understanding the geologic time scale.
• Because these time periods are frequently recognized on the basis of animal life, the titles of most a eons and eras finish in azoic.
• Fossils of relatively primitive species, such as bacteria, algae, and wormlike animals, may be found in rocks produced during the Proterozoic Eon.
• Index fossils are referred to as "marker fossils." The fossils that are found in a specific time period are known as marker fossils.
• From evolution to extension, there is a set time frame. Thus, the discovery of fossils from that time period showed the geological time of layer or strata formation.
• Index fossils, often called guide fossils or indicator fossils, are fossils that are used to describe and classify geologic periods (or faunal stages).
• Index fossils must have a narrow vertical range, a broad geographical distribution, and quick evolutionary trends.