GEOLOGY
STRATIGRAPHY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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To measure how long North America has existed
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To recognize major events that have occurred on Earth
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To explain how Earth was formed 4.6 billion years ago
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An explanation of how the dinosaurs disappeared
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Detailed explanation-1: -Age Dating of Rocks and Fossils: The Geologic Time Scale is used to determine the age of rocks, fossils, and other geological formations. This is essential for understanding the evolution of life on Earth and for reconstructing past environments and ecosystems.
Detailed explanation-2: -The geologic time scale is an important tool used to portray the history of the Earth-a standard timeline used to describe the age of rocks and fossils, and the events that formed them.
Detailed explanation-3: -The geological time scale is based on the the geological rock record, which includes erosion, mountain building and other geological events. Over hundreds to thousands of millions of years, continents, oceans and mountain ranges have moved vast distances both vertically and horizontally.
Detailed explanation-4: -These divisions reflect major changes in the composition of ancient faunas, each era being recognized by its domination by a particular group of animals. The Cenozoic has sometimes been called the “Age of Mammals", the Mesozoic the “Age of Dinosaurs” and the Paleozoic the “Age of Fishes".
Detailed explanation-5: -4600 mya (million years ago) – Planet Earth formed. 4500 mya – Earth’s core and crust formed. 4400 mya – The Earth’s first oceans formed. 3850 mya – The first life appeared on Earth. 1500 mya – Oxygen began to accumulate in the Earth’s atmosphere. 700 mya – The first animals evolved. More items