Topic: How Old is Old? Geologic Time Broadcast 4: February 7, 2001 Mrs. Joan Linsley.

Slides:

Advertisements

Similar presentations

The Fossil Record Chapter 17.1.

Advertisements

Relative Dating of Rocks Layers

“How can scientists determine the age of rocks and fossils?”

17.1. Fossils Paleontologists- study fossils Fossil Record evidence for hist. of life and how species have changed over time Extinct- some species have.

Do Now 1.Get How Fossils Are Madearticle, Relative Dating lab and notes from brown cart in front of room. 2.Read How Fossils Are Made. 3.Complete crossword.

THE HISTORY OF LIFE SC STANDARD B-5 Students will demonstrate an understanding of the basis of evolution.

Earth History GEOL 2110 Lecture 7 Fundamentals of Stratigraphy I

Chapter 8.  itarianism  A principle that geologic processes that occurred in the past can be explained by current geologic processes.  Volcanism and.

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. 

Unit 5: Age of the Earth Objective:

Finding the Relative age of Rocks

Chapter 3 Section 4 Looking at Fossils.

The Relative Age of Rocks

The Fossil Record Section 17–1

Topic: Sound of the Sea Using Sound as a Tool Broadcast 5: February 14, 2001 Mrs. Joan Linsley.

Ocean Drilling Distance Learning Program. Overview zThe Ocean Drilling Distance Learning Program (OD-DLP) at Texas A&M University builds on the exciting.

Topic: The Sea Also Rises Changes in Sea Level Broadcast 6: February 21, 2001 Mrs. Joan Linsley.

Topic: The End is Just the Beginning... Leg 194 Wrap-up Broadcast 7: February 28, 2001 Mrs. Joan Linsley.

Topic: Sediments Broadcast 3: January 31, 2001 Mrs. Joan Linsley.

Fossil Dating. HOW DO WE KNOW THE AGE OF FOSSILS? -Scientists use 2 methods to determine the age of fossils: 1. Relative Dating 2. Absolute Dating.

Terms for Geologic Time

Topic 13 - Correlation The process of correlation makes it possible to show that rocks or geologic events from different places are the same or similar.

How do scientists know evolution has occurred?. Paleontologists: scientists who study fossils Geologists: scientists who study rock layers.

Earth History- Table of Contents RELATIVE vs. ABSOLUTE LAWS UNCONFORMITIES GEOLOGIC SECTIONS.

The Geologic Time Scale and Early Earth Section Review.

Geologic Time Scale. A record of the life forms and geologic events in Earth’s history. Scientists developed the geologic time scale by studying rock.

Chapter 12. Warm-up9/1/15  List and briefly describe three different types of fossils.

The Stratigraphic Record

Geologic Time Scale & Fossils Notes Part 1. Rock Types & Fossils There are 3 types of rock: – Igneous, Sedimentary, and Metamorphic – Sedimentary rocks.

Relative Age The age of a rock unit or event __________ to the age of another rock unit or event. In other words which layer or event came __________,

Relative Age  The age of a rock unit or event relative to the age of another rock unit or event.  In other words which layer or event came first, second,

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.

Radiometric Dating – geochronologic units Stratigraphic record can be subdivided according to a variety of criteria including lithology (lithostratigraphy),

Geologic Time. “Consider the Earth’s History as the old measure of the English yard, the distance from the king’s nose to the tip of his outstretched.

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.

Radioactive Dating. Warm-up Read the Radioactive Dating Lab and answer the following questions: 1) What is the relative dating? 2) What is absolute dating?

RELATIVE AGE OF ROCKS Lesson Absolute or Relative? Anthony is the youngest. Melony is 4 years old. Michael is older then Sasha. Sasha is 16 years.

Chapter 9 Section 1 Review Page

Key Concepts: Why is the geological time scale used to show Earth’s history? What are the different units of the geological time scale? Key Terms: geological.

Finding Relative Age. Do Activity 12-D Part II on p. 263.

Correlation and Fossils WOOHOO!. Applying Principles of Relative Dating to Determine Geologic History of an Area The process of matching rocks or geologic.

Index Fossils and Geologic Time

Chapter 21 Section 4Geologic Time. Chapter 21 Section 4 – What You’ll Learn - page Before you read - write the reading’s objectives in this space: 1 –

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.

Interpreting Ancient Environments

Chapter 17 Section 1 paleontologists- scientists who study fossils -they infer what past life forms were like -arrange fossils according to time in which.

Section 5 Geologic Time Scale. Geologists study all 4.6 billion years of the Earth’s history Grand Canyon is one of best places to see Earth’s history.

Chapter 19: The History Of Life Ridgewood High School

What is the Earth’s time scale? The Geological time scale is a record of the life forms and geological events in Earth’s history. Scientists developed.

Absolute Dating.

Age of Rocks Standard Infer the relative age of rocks and fossils from index fossils and the ordering of rock layers.

17-1: The Fossil Record Biology 2. Studying history of life is fascinating and challenging Scientists can study ancient rocks, sap from trees, bogs and.

Chapter 8 Sections 2 & 3 The Relative Age of Rocks Radioactive Dating.

TOPIC 13 – GEOLOGIC HISTORY. DATING ROCKS There are two ways to get the ‘age’ of a rock: 1.) RELATIVELY ex) Rock layer ‘A’ is older than rock layer ‘B’

Jeopardy Fossils Relative Aging Absolute Dating Geologic Time

TOPIC XIII: Interpreting Geologic History

Radiometric Dating – geochronologic units

Unit 5: Age of the Earth Objective:

Chapter 9 Study Notes A View of Earth’s Past.

Examining the Fossil Record

Index Fossil Record This is what the scientists have put together to use to measure the age of the different index fossils.

Relative age dating.

Age of the Earth Objective:

Unit 5: Geological Time Vocabulary

4/18 - 7th Grade Agenda Learning Objective: Learn about Index Fossils

Dating & Fossils Pp and

Geologic Time Notes By studying the characteristics of rocks and the fossils within them geologists can… interpret the environments in which the rocks.

The Fossil Record.

Determining Relative Age

Presentation transcript:

Topic: How Old is Old? Geologic Time Broadcast 4: February 7, 2001 Mrs. Joan Linsley

Relative vs. Absolute Time Relative: the age of a rock layer in relation to other nearby layers. The precise length of geologic time represented by any layer is often unknown. Absolute: the age of a rock or mineral in numbers of years.

Geologic Time

Terms/Tools for Determining Age Biostratigraphical Unit: definition of the boundaries of a rock layer based on the ages of fossils within it Lithostratigraphical Unit: definition of the boundaries of a rock layer based on the physical characteristics of the rocks within Chronostratigraphical Unit: division of a section of rock based on the absolute ages of the rocks within it Geochronology: development of a time- line of events relating to the deposition or creation of rocks in a given area

Use of Fossils Fossils provide a record of the slow, progressive development of life. Through the use of index fossils, one may identify a particular layer of rock wherever it is exposed. Scientists use fossils to identify ages of rocks throughout the world.

Guest Dr. Michael Howell Paleontologist University of South Carolina

Fossils

Bio/Lithostratigraphy

Time for: Ask A Question!!