Ch 8: Geologic Time & Dating in New England

About This Chapter

Studying for a test or finishing your homework is a snap using this informative chapter on geologic dating in New England. The video lessons we've included here are accessible 24/7 on your computer or mobile device and written by expert instructors to boost your confidence before exam day.

Geologic Time & Dating in New England - Chapter Summary

You'll study geologic time and dating in New England when you work through this interesting chapter. Watch videos covering subjects such as the major time frames of geologic time scale, the history of life on Earth and the evolutionary theories of Darwin and Lamarck. After finishing these lessons, you should be able to:

  • Outline the scientific evidence that supports evolution
  • Differentiate between the numerical and relative dating methods of geological dating
  • Define the law of superposition as it relates to relative dating
  • Discuss the principles of radiometric dating
  • Detail the significance of half-life in radiometric dating
  • Explain how index fossils are used as indicators of time
  • Identify the important conditions of fossil preservation
  • Describe the geologic history of New England and Massachusetts

Expert instructors created these video lessons and their accompanying quizzes to help you quickly and easily understand this information. If you'd rather not watch an entire video lesson, you can use the video tabs feature to skip ahead to the section you'd like to see. At any time, you're welcome to submit any questions you have to one of our instructors through the Dashboard.

11 Lessons in Chapter 8: Geologic Time & Dating in New England
Test your knowledge with a 30-question chapter practice test
Geologic Time Scale: Major Eons, Eras, Periods and Epochs

1. Geologic Time Scale: Major Eons, Eras, Periods and Epochs

The geologic time scale is an essential tool for understanding the history of Earth and the evolution of life. In this lesson, explore the principal eons, eras, periods, and epochs that help us track major events in geologic history.

The History of Life on Earth: Timeline and Characteristics of Major Eras

2. The History of Life on Earth: Timeline and Characteristics of Major Eras

The Earth is over 4 billion years old. Ever wonder what happened during certain time periods in that large amount of time? We will look at the major eons and eras of Earth's history along with important characteristics of each.

Theories of Evolution: Lamarck vs. Darwin

3. Theories of Evolution: Lamarck vs. Darwin

We'll look at the interplay between population genetics and environment. Are traits individually acquired or do entire populations evolve? The flying hamsters and a few other notable experiments will provide the answers.

Scientific Evidence That Supports Evolution

4. Scientific Evidence That Supports Evolution

Evolution explains how species that are present on Earth today are modified descendants of their ancestors. This scientific theory is supported by many different types of evidence, which show how evolution is a very real and natural phenomenon.

Methods of Geological Dating: Numerical and Relative Dating

5. Methods of Geological Dating: Numerical and Relative Dating

Learn how scientists determine the ages of rocks and fossils. We'll explore both relative and numerical dating on our quest to understand the process of geological dating. Along the way, we'll learn how stratigraphic succession and radioactive decay contribute to the work of paleontologists.

What is Relative Dating? - Law of Superposition, Principles of Original Horizontality & Cross-Cutting Relationships

6. What is Relative Dating? - Law of Superposition, Principles of Original Horizontality & Cross-Cutting Relationships

Discover how geologists study the layers in sedimentary rock to establish relative age. Learn how inclusions and unconformities can tell us stories about the geologic past. We'll even visit the Grand Canyon to solve the mystery of the Great Unconformity!

Principles of Radiometric Dating

7. Principles of Radiometric Dating

Radiometric dating is a method used to determine the age of rocks and other materials based on the rate of radioactive decay. Learn about three common types of radioactive decay: alpha decay, beta decay and gamma decay.

Radiometric Dating: Methods, Uses & the Significance of Half-Life

8. Radiometric Dating: Methods, Uses & the Significance of Half-Life

Radiometric dating is used to estimate the age of rocks and other objects based on the fixed decay rate of radioactive isotopes. Learn about half-life and how it is used in different dating methods, such as uranium-lead dating and radiocarbon dating, in this video lesson.

Relative Dating with Fossils: Index Fossils as Indicators of Time

9. Relative Dating with Fossils: Index Fossils as Indicators of Time

You may already know how to date a fossil with a rock. But did you know that we can also date a rock with a fossil? Watch this video to find out how we use index fossils to establish the relative ages of rocks.

Conditions of Fossil Preservation: Rapid Burial, Hard Parts & the Elements

10. Conditions of Fossil Preservation: Rapid Burial, Hard Parts & the Elements

Learn how fossils are formed and how varying conditions affect the preservation of organisms. What is the best way for a dinosaur to become fossilized? Find out here!

The Geologic History of Massachusetts & New England

11. The Geologic History of Massachusetts & New England

In this lesson, we discuss the ancient and fascinating geologic history of Massachusetts and New England. Starting with the earliest known rock layers, we see continents collide, oceans develop, and glaciers carve the Earth.

Chapter Practice Exam
Test your knowledge of this chapter with a 30 question practice chapter exam.
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Practice Final Exam
Test your knowledge of the entire course with a 50 question practice final exam.
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