The Tales Rocks Tell and the Changes to the Story Mountains BrainPOP has good examples of unconformities.

Slides:

Advertisements

Similar presentations

Relative Dating of Rocks Layers

Advertisements

How to tell how old the layers of rock are.

Using the rock record to age date rock layers

RELATIVE TIME: When the age of rock is compared to the ages of other rocks or events in geological time. Can determine which layers are older than others.

Section 4.2  The relative age of a rock is its age compared to the ages of other rocks.  Ex. Mrs. Herrscher is older than her sister and brother. 

Finding the Relative age of Rocks

The Relative Age of Rocks 10-2

The relative age of rocks

Dating Rock Layers.

Concept Review – Geologic Time

8.1 The Rock Cycle 7.4.a Students know Earth processes today are similar to those that occurred in the past and slow geologic processes have large cumulative.

The Relative Age of Rocks

The Story of the Earth – The Principle of Superposition!

The Grand Canyon By: Leah Bahlman. Water How was the Grand Canyon formed? The Colorado River cuts through the Colorado Plateau. For 6 million years, the.

GEOLOGIC PRINCIPLES & RELATIVE DATING. HOW OLD IS THE EARTH? The Earth is about 4.6 billion years old Much of its history is recorded in the rocks Observations.

Key Ideas State the principle of uniformitarianism.

Relative Dating of Strata. Relative Dating Determining relative ages of rocks or strata compared to another rock or strata. Can say which layer is older.

Review of Lessons 1-2 What types of rock are most fossils? How formed?

Geology. The study of the solid Earth and the processes that shape it – Plate tectonics – Past climates – Natural disasters – Fossil Record – Evolution.

The Geologist as Detective.  THE PRINCIPLES USED IN DETERMINING THE ORDER IN WHICH ROCKS WERE FORMED.

Rock Dating. How old is Earth? What are some tools or methods that scientists could use to figure out the age of Earth? Think About It...

WELCOME TO CLASS. Agenda TODAY Sequencing Time Rock Record Notes Relative Age activity Hand back tests NEXT TIME Absolute age lab Geologic Time QUIZ.

Geology Review Game Ready your Mind!. Your teams are your table groups.

The Rock Cycle Pg Essential Question How do the rock cycle and the principle of Uniformitarianism explain Earth’s landscape and history?

Relative Dating and Relative Age

7.4.c Students know that the rock cycle includes the formation of new sediment and rocks and that rocks are often found in layers, with the oldest generally.

21.2 – Relative Age Dating How can you tell if one rock layer is older than another? How can you tell if one fossil is older than another? What is an index.

The Rock Record Section 1 Section 1: Determining Relative Age Preview Objectives Uniformitarianism Relative Age Law of Superposition Principle of Original.

Bell Ringer How do fossils form? Where are they found and describe each?

Ch. 13 Section 2 Relative Ages of Rocks.

Earth Processes and Rock Layers. Mountain Building Mountain building occurs when 2 continental plates of equal densities collide. – The plates crush together,

Understanding Geologic Time. How old is it? How do we know? Absolute dating – process of assigning a precise numerical age to an organism, object or.

Geologic Time When time rocks…. Get It?!!. Geologic Time Geologic Time: Is the study and interpretation of Earth’s past. By looking at a cross-section.

A Little Bit of History … The history of geologic time begins with the human interest in mining. Interests in rock units began to flourish with commercial.

A Little Bit of History… The history of geologic time begins with the human interest in mining. Interests in rock units began to flourish with commercial.

The Relative Age Of Rocks Chapter 8 Section 2

Earth’s History How do we know about it?. What is Uniformitarianism? Uniformitarianism: –Is a theory developed by the Scottish geologist, James Hutton,

Relative Dating. Relative Dating is one of the methods that geologists use to help tell geologic time. It can NOT tell us exactly how old something is,

Geology 101 David Brown. James Hutton ( CE) Scottish geologist Scottish geologist Developed the laws of geology Developed the laws of geology.

The Rock Record Section 1 Section 1: Determining Relative Age Preview Objectives Uniformitarianism Relative Age Law of Superposition Principle of Original.

Relative-Age Dating. Scientists have not always thought Earth was as old as it is. James Hutton in the late 1700’s was the first geologist to think Earth.

Earth Science Notes Relative Age of Rocks. Objectives I can… Distinguish relative and absolute dating. Describe the 6 laws of relative dating. Use the.

21.2 – Relative Age Dating. Interpreting Geology James Hutton, a Scottish geologist who lived in the late 1700s Attempted to explain Earth ’ s history.

Principle of Superposition and Unconformities

Law of Uniformitarianism

DETERMINING RELATIVE AGE

Station 1 Earth’s Interior

Age of earth pg

How Old is Old? Geologic Time.

The History of Earth Chapter 6 Sections 1 and 2.

The History of Earth Chapter 6 Sections 1 and 2.

EARTH AND SPACE SCIENCE

The History of Earth Chapter 6 Sections 1 and 2.

Rock record Condensed version of complete Rock Record –relative dating portion [See Rock Record to see complete version including more details on Rock.

Volcanoes and Mountains

Relative Age of Rocks Chapter 9 Section 2 Pgs

The Rock Record.

The History of Earth Chapter 6 Sections 1 and 2.

5.1 Principles of Earth’s History

5.2 Faults, Folds & Fossils Unit 5: Earth’s History January 29, 2012

Types of Rock Liz LaRosa

Ch. 13 Section 2 Relative Ages of Rocks.

Presentation transcript:

The Tales Rocks Tell and the Changes to the Story Mountains BrainPOP has good examples of unconformities

Danish Catholic Bishop and Scientist Started in anatomy but fossils expanded his work into geology Introduced the concept of the Principle of Superposition, Unconformities and fossils being part of once living organisms.

Scottish Farmer Started in medicine but chemistry expanded his work into geology Introduced the concept of the Rock Cycle (before Hutton it was thought that rocks precipitated out of water) Introduced the concept of Deep Time (Earth is millions of years old) Before Hutton the Earth was thought to be about six thousand years old (Oct. 22, 4004 BC)

In rock layers (strata) the oldest rocks are on the bottom and the newest rock is on the top. This allows you to find the relative age (older/newer) of the rocks based on their position. Analogies: The dirty clothes pile Magazines

Unconformities are changes that occur in the rock layers (strata). Unconformities can be caused by plate tectonics (earthquakes), volcanic activity (magma pushing and lava flows), erosion (water and glaciers), lack of deposition (no new sediment is deposited over a long period), etc.

B A C D E F This is NOT a man made layer.