Objective To learn how the geologic timeline was made and how the length of the various periods are...

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October 27,2011

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Transcript of Objective To learn how the geologic timeline was made and how the length of the various periods are...

Page 1: Objective To learn how the geologic timeline was made and how the length of the various periods are different Agenda Progress reports – need to be signed.

October 27,2011

Page 2: Objective To learn how the geologic timeline was made and how the length of the various periods are different Agenda Progress reports – need to be signed.

ObjectiveTo learn how the

geologic timeline was made and how the length of the various periods are different

AgendaProgress reports –

need to be signed by Parent/guardian

Geologic History Notes

Project –highlightsLab: Geologic

Timeline

Page 3: Objective To learn how the geologic timeline was made and how the length of the various periods are different Agenda Progress reports – need to be signed.

Structure of the Time Scale

The Geologic Time Scale

Based on their interpretations of the rock record, geologists have divided Earth’s 4.56-billion-year history into units that represent specific amounts of time. Taken together, these time spans make up the geologic time scale.

Page 4: Objective To learn how the geologic timeline was made and how the length of the various periods are different Agenda Progress reports – need to be signed.

Structure of the Time Scale

12.4 The Geologic Time Scale

Eons represent the greatest expanses of time. Eons are divided into eras. Each era is subdivided into periods. Finally, periods are divided into smaller units called epochs. There are three eras within the Phanerozoic eon: the Paleozoic, which means “ancient life,” the Mesozoic, which means “middle life,” and the Cenozoic, which means “recent life.”

Page 5: Objective To learn how the geologic timeline was made and how the length of the various periods are different Agenda Progress reports – need to be signed.

The Geologic Time Scale

Page 6: Objective To learn how the geologic timeline was made and how the length of the various periods are different Agenda Progress reports – need to be signed.

Precambrian Era

The Precambrian era lasted from Earth’s formation 4570 until 542 million years ago (mya).

The first cells appeared in the Precambrian era.

Page 7: Objective To learn how the geologic timeline was made and how the length of the various periods are different Agenda Progress reports – need to be signed.

Paleozoic Era

The Paleozoic era lasted from 542 to 251 mya.

Paleozoic is a Greek word meaning “ancient life.”

Page 8: Objective To learn how the geologic timeline was made and how the length of the various periods are different Agenda Progress reports – need to be signed.

Paleozoic Era

Rocks from the Paleozoic Era contain fossils of snails, clams, corals, and trilobites.

Page 9: Objective To learn how the geologic timeline was made and how the length of the various periods are different Agenda Progress reports – need to be signed.

Paleozoic Era

Animals with backbones began to appear.

At the end of this era, the continents that existed during this time period collided to form a new supercontinent, Pangaea.

Page 10: Objective To learn how the geologic timeline was made and how the length of the various periods are different Agenda Progress reports – need to be signed.

Mesozoic Era

The Mesozoic era lasted from 251 to 65 mya. This era is often called the Age of Reptiles.

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Cenozoic Era

The Cenozoic era began 65 mya and is still going on.

The common name for the Cenozoic Era is the Age of Mammals.

Page 12: Objective To learn how the geologic timeline was made and how the length of the various periods are different Agenda Progress reports – need to be signed.

Cenozoic Era

Mammals diversified into a variety of species including land mammals, sea mammals, and flying mammals.

Cenozoic means “recent life.”

Page 13: Objective To learn how the geologic timeline was made and how the length of the various periods are different Agenda Progress reports – need to be signed.

Mastadon Stromatolites Apatosaurus

(Brontosaurus) Orthoceras Nautiloid Eurypterids Trilobites Velociraptor Chesapecten jeffersonius

( State Fossil) Carcharodon Megalodon Spinosaurus Cave Bear (Ursus

speleaus) Ichthyodectes ctenodon Coelophysis Quagga Giganotosaur

Ohmdenosaurus Zephyrosaur Wuerhosaurus Torosaurus latus Elasmosaurus platyurus Manny: woolly mammoth Sid: ground sloth

(Megalonyx) Diego: saber-toothed

tiger (Smilodon) Scrat: saber-toothed

squirrel (Leptictidium) Dab: dodo Carl: Embolotherium Frank: Brontotherium


Ch 9-View of Earth’s Past Objectives –Summarize how scientist worked together to develop geologic column –List major divisions of geologic time –Summarize.

Ch 9-View of Earth’s Past Objectives –Summarize how scientist worked together to develop geologic column –List major divisions of geologic time –Summarize.

Geologic Time 1. Which geologic event took place first and when? when? Which rock layer is older, and how is earth Which rock layer is older, and how.

Geologic Time 1. Which geologic event took place first and when? when? Which rock layer is older, and how is earth Which rock layer is older, and how.

Geologic time. Goal to understand how we determine relative and numerical ages of geologic events.

Geologic time. Goal to understand how we determine relative and numerical ages of geologic events.

Geologic Time. Geologic time scale How geologists explain Earth’s rock record Neptunism: all rocks were precipitated from an ocean (1780’s) –Werner (p.

Geologic Time. Geologic time scale How geologists explain Earth’s rock record Neptunism: all rocks were precipitated from an ocean (1780’s) –Werner (p.

Geologic Time - California State University, Sacramento time.pdf · Geologic Time Geologic time can be divided into four unequal periods of time called era’s: Precambrian era represents

Geologic Time - California State University, Sacramento time.pdf · Geologic Time Geologic time can be divided into four unequal periods of time called era’s: Precambrian era represents

Chapter 20 Geologic structures. How rocks respond to tectonic forces!

Chapter 20 Geologic structures. How rocks respond to tectonic forces!

Rock Deformation and Geologic Structures. How do we measure rock deformation? What causes rocks to deform? How do geologic structures relate to stress,

Rock Deformation and Geologic Structures. How do we measure rock deformation? What causes rocks to deform? How do geologic structures relate to stress,

How do geologic processes change the shape of Earth’s surface?

How do geologic processes change the shape of Earth’s surface?

Geologic Time. 01: Geologic Time Scale Huge sections of time are broken down into smaller groups of time: Eons, Eras, Periods, and Epochs Eon is the.

Geologic Time. 01: Geologic Time Scale Huge sections of time are broken down into smaller groups of time: Eons, Eras, Periods, and Epochs Eon is the.

Eons, Eras, Periods, Epochs Monroe. Objectives ~ Geologic Column ~ the ordered arrangement of rock in layers, based on age Time frame/segment Eons ~ the.

Eons, Eras, Periods, Epochs Monroe. Objectives ~ Geologic Column ~ the ordered arrangement of rock in layers, based on age Time frame/segment Eons ~ the.

How are Geologic Evolution and Biologic Evolution related to one another?

How are Geologic Evolution and Biologic Evolution related to one another?

Geologic History and the Evolution of Life...epochs eras fossils Mesozoic Paleozoic periods Phanerozoic Triassic Eons Eras Eras Periods Phanerozoic Cenozoic Mesozoic Paleozoic Mesozoic

Geologic History and the Evolution of Life...epochs eras fossils Mesozoic Paleozoic periods Phanerozoic Triassic Eons Eras Eras Periods Phanerozoic Cenozoic Mesozoic Paleozoic Mesozoic

The Geologic Time Scale...geologic time scale is a "calendar" that divides Earth's past into units of time calledeons, eras, periods and epochs. These units of time are based on evidence

The Geologic Time Scale...geologic time scale is a "calendar" that divides Earth's past into units of time calledeons, eras, periods and epochs. These units of time are based on evidence

GEOLOGIC TIME How do we know when things happened? 1.

GEOLOGIC TIME How do we know when things happened? 1.

GEOLOGIC TIME The Age of the Earth… How old is it?

GEOLOGIC TIME The Age of the Earth… How old is it?

PAYCHECKS, PAY PERIODS, TYPES OF PAY. Pay Periods In order to understand your paycheck, you need to understand pay periods. How often you get paid.

PAYCHECKS, PAY PERIODS, TYPES OF PAY. Pay Periods In order to understand your paycheck, you need to understand pay periods. How often you get paid.

Q Factors: How to Justify in Periods of Low Loss

Q Factors: How to Justify in Periods of Low Loss

Here, we’ll show you how to find the seven periods on the Periodic Table. Periods are also called Rows.

Here, we’ll show you how to find the seven periods on the Periodic Table. Periods are also called Rows.

Geologic Time. How Geologists Think about Time The big word: Uniformitarianism “Simply” put: If the geologic processes we observe today are representative.

Geologic Time. How Geologists Think about Time The big word: Uniformitarianism “Simply” put: If the geologic processes we observe today are representative.

Geologic Time Scale NB #41. Time Periods O Eons O Eras O Periods O Epochs.

Geologic Time Scale NB #41. Time Periods O Eons O Eras O Periods O Epochs.