SlideShare a Scribd company logo
The Geological Time Scale
8-2.4 Recognize the relationship among the units—era, epoch, and period—into
which the geologic time scale is divided.
8-2.5 Illustrate the vast diversity of life that has been present on Earth over time by
using the geologic time scale.
8-2.2 Summarize how scientists study Earth’s past environment and diverse life-
forms by examining different types of fossils (including molds, casts, petrified fossils,
preserved and carbonized remains of plants and animals, and trace fossils).
8-2.3 Explain how Earth’s history has been influenced by catastrophes (including the
impact of an asteroid or comet, climatic changes, and volcanic activity) that have
affected the conditions on Earth and the diversity of its life-forms.
Events in Your Life
• ___When you started second grade
• ___When you were born
• ___ When you started kindergarten
• ___When you learned to ride a bike.
• ___ When you learned to walk.
• ___ When you learned to read.
• ___ When you lost your first tooth.
• ___ Today’s date.
Construct a timeline of the important events in your life. Be
sure to include all of the events listed below and any
other events you feel are important. Your timeline should
be constructed TWO ways:
1) Numerical Order (use actual dates)
2) Sequential Order (most recent at top)
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 the time scale by
studying rock layers and fossils world
wide.
• Radioactive dating helped determine the
absolute divisions in the time scale.
Divisions of Geologic Time
• Eras are subdivided into periods...periods
are subdivided into epochs.
Era
Period
Epoch
E + P = EP
Divisions of Geologic Time
• Geological time begins with Precambrian
Time. Precambrian time covers
approximately 88% of Earth’s history.
FOUR Eras…
• PRE-CAMBRIAN – 88% of earth’s history
• Paleozoic (ancient life)
– 544 million years ago…lasted 300 million yrs
• Mesozoic (middle life)
– 245 million years ago…lasted 180 million yrs
• Cenozoic (recent life)
– 65 million years ago…continues through present day
Today…
• Today we are in the Holocene Epoch of
the Quaternary Period of the Cenozoic
Era.
Which unit is the largest?
Which unit is the smallest?
Today…
• Today we are in the Holocene Epoch of
the Quaternary Period of the Cenozoic
Era.
Which unit is the largest?
Which unit is the smallest?
Paleozoic Era (Ancient Life)
• The Cambrian period is the 1st
period of the Paleozoic
Era. “Age of the Trilobites”
• Explosion of life in the oceans began during this era.
• Most of the continents were covered in warm, shallow
seas.
– Invertebrates were dominate - Trilobites
– Fish emerged during this time
– Fish led to the arrival of amphibians
• The end of the Paleozoic era is called the “Age of Amphibians”
– Early land plants including mosses, ferns and cone-bearing
plants.
– The early coal forming forests were also formed during this
time.
Paleozoic Era
• Much of the limestone quarried for building and
industrial purposes, as well as the coal deposits
of western Europe and the eastern United
States, were formed during the Paleozoic.
• The Cambrian (beginning) opened with the
breakup of the world-continent Rodinia and
closed with the formation of Pangaea, as the
Earth's continents came together once again.
– This event is thought to have caused the
climate changes that led to mass extinction
event.
• The Appalachian mountains were formed during
this time.
Paleozoic Era
• At the end of the Paleozoic, the largest mass
extinction in history wiped out approximately
90% of all marine animal species and 70% of
land animals.
– Possible causes of this Mass Extinction Event
• Lowering of sea levels when the continents were
rejoined as Pangaea (convergent boundary)
• Increased volcanic activity (ash and dust)
• Climate changes – cooler climate
Trilobites
• Lived in Earth’s ancient seas
• Extinct before the dinosaurs
came into existence
• Cambrian Period is know as
the “Age of the Trilobites”
(put in on table)
Brachiopods
• Marine animals that resemble clams.
Early Fish
Early fish did not have jaws.
Some species of sharks
were in existence at this
time.
Frilled Shark that was found in Japan in January 2007. This shark was
considered a “living fossil”
Early Land Plants
Cone bearing plants
Ferns
Mosses
Mesozoic Era – Middle Life
• At the beginning of this era the continents
were joined as Pangaea.
• Pangaea broke up around the middle of
this era.
• Reptiles became the most abundant
animals because of their ability to adapt to
the drier climate of the Mesozoic Era.
– Skin maintains body fluids
– Embryos live in shells
Mesozoic Era
• Dinosaurs were also very active in this
era.
– First small dinosaurs appeared in the Triassic
Period.
– Larger and more abundant dinosaurs
appeared in the Jurassic Period.
• Small mammals and birds also
appeared during this era.
– The mammals were small, warm-blooded
animals. Hair covering their bodies.
• These characteristics help them survive in
changing environments.
Mesozoic Era
• The main plant life of this time were
Gymnosperms or plants that produce seeds,
but no flowers.
– Pine Trees
• Flowering plants appeared during the END of
this era.
Mesozoic Era
• This era ended with a mass extinction event
about 65 million years ago.
– Many groups of animals, including the dinosaurs
disappeared suddenly at this time.
• Many scientists believe that this event was
caused by a comet or asteroid colliding with the
Earth.
Crater sites on Earth
Mesozoic Era – Mass Extinction
Event
• Asteroid or Comet collides with Earth.
– Huge cloud of smoke and dust fills the air
– Blocks out sunlight
– Plants die
– Animals that eat plants die
– Animals that eat plant-eaters die.
• However, not all forms of life died during this
event. Many animals that you see today are
descendants from the survivors of this extinction
event.
Dinosaurs
Mesozoic Reptiles
Mesozoic Mammals
Mesozoic Plants
Flowering plants evolved
towards the end of the
Mesozoic Era.
Cenozoic Era – Recent Life
• Began about 65 million years ago and continues
today!!!!!
– Climate was warm and mild.
– Marine animals such as whales and dolphins evolved.
• Mammals began to increase and evolve adaptations
that allowed them to live in many different
environments – land, air and the sea.
– Grasses increased and provided a food source for grazing
animals
• Many mountain ranges formed during the Cenozoic
Era
– Alps in Europe and Himalayas in India; Rocky Mountains in
the USA
Cenozoic Era
• Growth of these mountains may have helped to
cool down the climate
– Ice Ages occurred late in the Cenozoic Era
(Quaternary Period).
• As the climate changed, the animals had to
adapt to the rise and fall of the oceans caused
by melting glaciers.
• This era is sometimes called the “Age of
Mammals”
Cenozoic Era
• Marine animal examples:
– Algae, Mollusks, Fish and Mammals
• Land animal examples:
– Bats, Cats, Dogs, Cattle and Humans
– Humans are thought to have appeared around 3.5
million years ago (during the most recent period –
Quaternary).
• Flowering plants were now the most common
plant life.
Cenozoic Mammals
Flowering Plants were common
during the Cenozoic Era
Life forms found in each Era
• On your worksheet,:
- List Geologic Events found in
each Era.
- List Life forms found in each Era.
- Draw pictures of Life Forms…
USE COLOR!
Make sure you are putting them in the
correct block!!

More Related Content

What's hot

History of the Earth - How our World Came to Be
History of the Earth - How our World Came to BeHistory of the Earth - How our World Came to Be
History of the Earth - How our World Came to Be
Vinay Parikh
 
Continental Drift
Continental DriftContinental Drift
Continental Drift
dwinter1
 
Relative and absolute_dating
Relative and absolute_datingRelative and absolute_dating
Relative and absolute_dating
kimberella
 
Geologic Time Lecture
Geologic Time LectureGeologic Time Lecture
Geologic Time Lecture
Terri Kelsey
 
Sedimentary Rocks
Sedimentary RocksSedimentary Rocks
Sedimentary Rocks
!SYOU co-designed sneakers
 
Earth History ppt
Earth History pptEarth History ppt
Earth History ppt
Anabelle Montevirgen
 
Relative and absolute dating
Relative and absolute datingRelative and absolute dating
Relative and absolute dating
North Gwinnett Middle School
 
Earth Science 3.3 : Absolute Dating: A Measure of Time
Earth Science 3.3 : Absolute Dating: A Measure of TimeEarth Science 3.3 : Absolute Dating: A Measure of Time
Earth Science 3.3 : Absolute Dating: A Measure of Time
Chris Foltz
 
Geology Time Scale
Geology Time ScaleGeology Time Scale
Geology Time Scale
eiddinbaloch
 
Relative & Absolute Dating
Relative & Absolute DatingRelative & Absolute Dating
Relative & Absolute Dating
Heather Harris
 
Geological time Scale
Geological time  Scale Geological time  Scale
Geological time Scale
نوشی نایاب
 
Plate Tectonic Theory
Plate Tectonic TheoryPlate Tectonic Theory
Plate Tectonic Theory
LhEn LabahanAn
 
Radiometric methods for age determination
Radiometric methods for age determinationRadiometric methods for age determination
Radiometric methods for age determination
Pramoda Raj
 
Prehistory 1: Geologic Timeline- Notes on the geologic & life history of Ear...
Prehistory 1: Geologic Timeline-  Notes on the geologic & life history of Ear...Prehistory 1: Geologic Timeline-  Notes on the geologic & life history of Ear...
Prehistory 1: Geologic Timeline- Notes on the geologic & life history of Ear...
Robin Seamon
 
Precambrian geology
Precambrian geologyPrecambrian geology
Precambrian geology
Pramoda Raj
 
Plate tectonics
Plate tectonicsPlate tectonics
Plate tectonics
zeeshan Ahmad
 
Geologic Timeline
Geologic TimelineGeologic Timeline
Geologic Timeline
angelpup1234
 
PLATE TECTONICS
PLATE TECTONICSPLATE TECTONICS
PLATE TECTONICS
Gheff Corpuz
 
Continental drift
Continental driftContinental drift
Continental drift
Jenny Dixon
 
The Geological Time Scale
The Geological Time ScaleThe Geological Time Scale
The Geological Time Scale
Prof. A.Balasubramanian
 

What's hot (20)

History of the Earth - How our World Came to Be
History of the Earth - How our World Came to BeHistory of the Earth - How our World Came to Be
History of the Earth - How our World Came to Be
 
Continental Drift
Continental DriftContinental Drift
Continental Drift
 
Relative and absolute_dating
Relative and absolute_datingRelative and absolute_dating
Relative and absolute_dating
 
Geologic Time Lecture
Geologic Time LectureGeologic Time Lecture
Geologic Time Lecture
 
Sedimentary Rocks
Sedimentary RocksSedimentary Rocks
Sedimentary Rocks
 
Earth History ppt
Earth History pptEarth History ppt
Earth History ppt
 
Relative and absolute dating
Relative and absolute datingRelative and absolute dating
Relative and absolute dating
 
Earth Science 3.3 : Absolute Dating: A Measure of Time
Earth Science 3.3 : Absolute Dating: A Measure of TimeEarth Science 3.3 : Absolute Dating: A Measure of Time
Earth Science 3.3 : Absolute Dating: A Measure of Time
 
Geology Time Scale
Geology Time ScaleGeology Time Scale
Geology Time Scale
 
Relative & Absolute Dating
Relative & Absolute DatingRelative & Absolute Dating
Relative & Absolute Dating
 
Geological time Scale
Geological time  Scale Geological time  Scale
Geological time Scale
 
Plate Tectonic Theory
Plate Tectonic TheoryPlate Tectonic Theory
Plate Tectonic Theory
 
Radiometric methods for age determination
Radiometric methods for age determinationRadiometric methods for age determination
Radiometric methods for age determination
 
Prehistory 1: Geologic Timeline- Notes on the geologic & life history of Ear...
Prehistory 1: Geologic Timeline-  Notes on the geologic & life history of Ear...Prehistory 1: Geologic Timeline-  Notes on the geologic & life history of Ear...
Prehistory 1: Geologic Timeline- Notes on the geologic & life history of Ear...
 
Precambrian geology
Precambrian geologyPrecambrian geology
Precambrian geology
 
Plate tectonics
Plate tectonicsPlate tectonics
Plate tectonics
 
Geologic Timeline
Geologic TimelineGeologic Timeline
Geologic Timeline
 
PLATE TECTONICS
PLATE TECTONICSPLATE TECTONICS
PLATE TECTONICS
 
Continental drift
Continental driftContinental drift
Continental drift
 
The Geological Time Scale
The Geological Time ScaleThe Geological Time Scale
The Geological Time Scale
 

Viewers also liked

Geological Time Scale
Geological Time ScaleGeological Time Scale
Geological Time Scale
Beda Choudhury
 
Geological time scale
Geological time scaleGeological time scale
Geological time scale
North Gwinnett Middle School
 
Stratigraphy
StratigraphyStratigraphy
Stratigraphy
GAURAV. H .TANDON
 
итоги выпуска 2013
итоги выпуска 2013итоги выпуска 2013
итоги выпуска 2013violetta1971
 
Surgical disaster in temporomandibular joint: Case report
Surgical disaster in temporomandibular joint: Case reportSurgical disaster in temporomandibular joint: Case report
Surgical disaster in temporomandibular joint: Case report
lpfeilsticker
 
Grad planning
Grad planningGrad planning
Grad planning
swoyken
 
Bio evolution
Bio evolutionBio evolution
Bio evolution
ssealey
 
A Short Primer on Investment Books - InsightCollider
A Short Primer on Investment Books - InsightColliderA Short Primer on Investment Books - InsightCollider
A Short Primer on Investment Books - InsightCollider
insightcollider
 
начальная школа
начальная школаначальная школа
начальная школаvioletta1971
 
Fmea sod ranking (1)
Fmea sod ranking (1)Fmea sod ranking (1)
Fmea sod ranking (1)
Pardeep Yadav
 
Moving forward with sign language projects in Formal SignWriting
Moving forward with sign language projects in Formal SignWritingMoving forward with sign language projects in Formal SignWriting
Moving forward with sign language projects in Formal SignWriting
Stephen Slevinski
 
Minnesota Turns Away Hungry Kids from School Lunch
Minnesota Turns Away Hungry Kids from School LunchMinnesota Turns Away Hungry Kids from School Lunch
Minnesota Turns Away Hungry Kids from School Lunch
endhunger
 
SignWriting in Unicode and rich text considerations
SignWriting in Unicode and rich text considerationsSignWriting in Unicode and rich text considerations
SignWriting in Unicode and rich text considerations
Stephen Slevinski
 
Residence renovation @ Irinjalakuda
Residence renovation @ IrinjalakudaResidence renovation @ Irinjalakuda
Residence renovation @ Irinjalakuda
Joseph Joseph Chalissery
 
GUÍA DE COMPRAS JULIO
GUÍA DE COMPRAS JULIOGUÍA DE COMPRAS JULIO
GUÍA DE COMPRAS JULIO
El Universal
 
Earths interior
Earths interiorEarths interior
Earths interior
ssealey
 
Avaliação 3 asía - oriente médio (1)
Avaliação 3   asía - oriente médio (1)Avaliação 3   asía - oriente médio (1)
Avaliação 3 asía - oriente médio (1)
Domsilos De Arruda Silva
 

Viewers also liked (18)

Geological Time Scale
Geological Time ScaleGeological Time Scale
Geological Time Scale
 
Geological time scale
Geological time scaleGeological time scale
Geological time scale
 
Stratigraphy
StratigraphyStratigraphy
Stratigraphy
 
кадеты
кадетыкадеты
кадеты
 
итоги выпуска 2013
итоги выпуска 2013итоги выпуска 2013
итоги выпуска 2013
 
Surgical disaster in temporomandibular joint: Case report
Surgical disaster in temporomandibular joint: Case reportSurgical disaster in temporomandibular joint: Case report
Surgical disaster in temporomandibular joint: Case report
 
Grad planning
Grad planningGrad planning
Grad planning
 
Bio evolution
Bio evolutionBio evolution
Bio evolution
 
A Short Primer on Investment Books - InsightCollider
A Short Primer on Investment Books - InsightColliderA Short Primer on Investment Books - InsightCollider
A Short Primer on Investment Books - InsightCollider
 
начальная школа
начальная школаначальная школа
начальная школа
 
Fmea sod ranking (1)
Fmea sod ranking (1)Fmea sod ranking (1)
Fmea sod ranking (1)
 
Moving forward with sign language projects in Formal SignWriting
Moving forward with sign language projects in Formal SignWritingMoving forward with sign language projects in Formal SignWriting
Moving forward with sign language projects in Formal SignWriting
 
Minnesota Turns Away Hungry Kids from School Lunch
Minnesota Turns Away Hungry Kids from School LunchMinnesota Turns Away Hungry Kids from School Lunch
Minnesota Turns Away Hungry Kids from School Lunch
 
SignWriting in Unicode and rich text considerations
SignWriting in Unicode and rich text considerationsSignWriting in Unicode and rich text considerations
SignWriting in Unicode and rich text considerations
 
Residence renovation @ Irinjalakuda
Residence renovation @ IrinjalakudaResidence renovation @ Irinjalakuda
Residence renovation @ Irinjalakuda
 
GUÍA DE COMPRAS JULIO
GUÍA DE COMPRAS JULIOGUÍA DE COMPRAS JULIO
GUÍA DE COMPRAS JULIO
 
Earths interior
Earths interiorEarths interior
Earths interior
 
Avaliação 3 asía - oriente médio (1)
Avaliação 3   asía - oriente médio (1)Avaliação 3   asía - oriente médio (1)
Avaliação 3 asía - oriente médio (1)
 

Similar to The geological time scale

geologic time scale.pptx
geologic time scale.pptxgeologic time scale.pptx
geologic time scale.pptx
RamiscalMaChristinaM
 
The geologic time scale
The geologic time scaleThe geologic time scale
The geologic time scale
mrcoyleteach
 
Geological time scale
Geological time scaleGeological time scale
Geological time scale
madan lal
 
geologicaltimescale-180802143533.pdf
geologicaltimescale-180802143533.pdfgeologicaltimescale-180802143533.pdf
geologicaltimescale-180802143533.pdf
rehanullah39
 
geological scale geological scale powerpoint
geological scale geological scale powerpointgeological scale geological scale powerpoint
geological scale geological scale powerpoint
MaryAnnFrias3
 
the_geological_timescale and history.ppt
the_geological_timescale and history.pptthe_geological_timescale and history.ppt
the_geological_timescale and history.ppt
JullianGCortina
 
geologic time scale_gen bio 2.pptx
geologic time scale_gen bio 2.pptxgeologic time scale_gen bio 2.pptx
geologic time scale_gen bio 2.pptx
RamiscalMaChristinaM
 
05 geologic timeline (1)
05 geologic timeline (1)05 geologic timeline (1)
05 geologic timeline (1)
Ariel Motas
 
2.ppt
2.ppt2.ppt
Q3-Lesson-2-History-of-Life-on-Earth.pdf
Q3-Lesson-2-History-of-Life-on-Earth.pdfQ3-Lesson-2-History-of-Life-on-Earth.pdf
Q3-Lesson-2-History-of-Life-on-Earth.pdf
MikhaelaJoyceSiapno
 
geologictimescale-100620233836-phpapp01-161007091843 (1).pdf
geologictimescale-100620233836-phpapp01-161007091843 (1).pdfgeologictimescale-100620233836-phpapp01-161007091843 (1).pdf
geologictimescale-100620233836-phpapp01-161007091843 (1).pdf
StarletMG
 
Geologic time scale_1
Geologic time scale_1Geologic time scale_1
Geologic time scale_1
Deborah Dreyer
 
Geological Time Scale.pptx
Geological Time Scale.pptxGeological Time Scale.pptx
Geological Time Scale.pptx
BIDYANATHJHA3
 
Intro.of geological time scale.pptx
Intro.of geological time scale.pptxIntro.of geological time scale.pptx
Intro.of geological time scale.pptx
Sanam SAM
 
DOC-20221113-WA0080..ppt
DOC-20221113-WA0080..pptDOC-20221113-WA0080..ppt
DOC-20221113-WA0080..ppt
SadafQasim3
 
Geologic time.pptx
Geologic time.pptxGeologic time.pptx
Geologic time.pptx
SadafQasim3
 
History of earth
History of earthHistory of earth
History of earth
martalpz
 
Geologic Time Scale (Group 4).pptx
Geologic Time Scale (Group 4).pptxGeologic Time Scale (Group 4).pptx
Geologic Time Scale (Group 4).pptx
ClarenceMarasiganCas
 
A view of the earth’s past
A view of the earth’s past A view of the earth’s past
A view of the earth’s past
mkeller1977
 
Geological Time Scale
Geological Time ScaleGeological Time Scale
Geological Time Scale
RameshPandi4
 

Similar to The geological time scale (20)

geologic time scale.pptx
geologic time scale.pptxgeologic time scale.pptx
geologic time scale.pptx
 
The geologic time scale
The geologic time scaleThe geologic time scale
The geologic time scale
 
Geological time scale
Geological time scaleGeological time scale
Geological time scale
 
geologicaltimescale-180802143533.pdf
geologicaltimescale-180802143533.pdfgeologicaltimescale-180802143533.pdf
geologicaltimescale-180802143533.pdf
 
geological scale geological scale powerpoint
geological scale geological scale powerpointgeological scale geological scale powerpoint
geological scale geological scale powerpoint
 
the_geological_timescale and history.ppt
the_geological_timescale and history.pptthe_geological_timescale and history.ppt
the_geological_timescale and history.ppt
 
geologic time scale_gen bio 2.pptx
geologic time scale_gen bio 2.pptxgeologic time scale_gen bio 2.pptx
geologic time scale_gen bio 2.pptx
 
05 geologic timeline (1)
05 geologic timeline (1)05 geologic timeline (1)
05 geologic timeline (1)
 
2.ppt
2.ppt2.ppt
2.ppt
 
Q3-Lesson-2-History-of-Life-on-Earth.pdf
Q3-Lesson-2-History-of-Life-on-Earth.pdfQ3-Lesson-2-History-of-Life-on-Earth.pdf
Q3-Lesson-2-History-of-Life-on-Earth.pdf
 
geologictimescale-100620233836-phpapp01-161007091843 (1).pdf
geologictimescale-100620233836-phpapp01-161007091843 (1).pdfgeologictimescale-100620233836-phpapp01-161007091843 (1).pdf
geologictimescale-100620233836-phpapp01-161007091843 (1).pdf
 
Geologic time scale_1
Geologic time scale_1Geologic time scale_1
Geologic time scale_1
 
Geological Time Scale.pptx
Geological Time Scale.pptxGeological Time Scale.pptx
Geological Time Scale.pptx
 
Intro.of geological time scale.pptx
Intro.of geological time scale.pptxIntro.of geological time scale.pptx
Intro.of geological time scale.pptx
 
DOC-20221113-WA0080..ppt
DOC-20221113-WA0080..pptDOC-20221113-WA0080..ppt
DOC-20221113-WA0080..ppt
 
Geologic time.pptx
Geologic time.pptxGeologic time.pptx
Geologic time.pptx
 
History of earth
History of earthHistory of earth
History of earth
 
Geologic Time Scale (Group 4).pptx
Geologic Time Scale (Group 4).pptxGeologic Time Scale (Group 4).pptx
Geologic Time Scale (Group 4).pptx
 
A view of the earth’s past
A view of the earth’s past A view of the earth’s past
A view of the earth’s past
 
Geological Time Scale
Geological Time ScaleGeological Time Scale
Geological Time Scale
 

More from ssealey

Geotime
GeotimeGeotime
Geotime
ssealey
 
Sealey evolution
Sealey evolutionSealey evolution
Sealey evolution
ssealey
 
Easy metric
Easy metricEasy metric
Easy metric
ssealey
 
K/T Extinction
K/T ExtinctionK/T Extinction
K/T Extinction
ssealey
 
How rocksform
How rocksformHow rocksform
How rocksform
ssealey
 
Rocks
RocksRocks
Rocks
ssealey
 
The rockcycle
The rockcycleThe rockcycle
The rockcycle
ssealey
 
Geological evolution
Geological evolutionGeological evolution
Geological evolution
ssealey
 
Geo evol parrish
Geo evol parrishGeo evol parrish
Geo evol parrish
ssealey
 
Earth’s history intro
Earth’s history introEarth’s history intro
Earth’s history intro
ssealey
 
Continental drift pp
Continental drift ppContinental drift pp
Continental drift pp
ssealey
 
Fossils power point
Fossils power pointFossils power point
Fossils power point
ssealey
 
Geo time
Geo timeGeo time
Geo time
ssealey
 

More from ssealey (13)

Geotime
GeotimeGeotime
Geotime
 
Sealey evolution
Sealey evolutionSealey evolution
Sealey evolution
 
Easy metric
Easy metricEasy metric
Easy metric
 
K/T Extinction
K/T ExtinctionK/T Extinction
K/T Extinction
 
How rocksform
How rocksformHow rocksform
How rocksform
 
Rocks
RocksRocks
Rocks
 
The rockcycle
The rockcycleThe rockcycle
The rockcycle
 
Geological evolution
Geological evolutionGeological evolution
Geological evolution
 
Geo evol parrish
Geo evol parrishGeo evol parrish
Geo evol parrish
 
Earth’s history intro
Earth’s history introEarth’s history intro
Earth’s history intro
 
Continental drift pp
Continental drift ppContinental drift pp
Continental drift pp
 
Fossils power point
Fossils power pointFossils power point
Fossils power point
 
Geo time
Geo timeGeo time
Geo time
 

Recently uploaded

"$10 thousand per minute of downtime: architecture, queues, streaming and fin...
"$10 thousand per minute of downtime: architecture, queues, streaming and fin..."$10 thousand per minute of downtime: architecture, queues, streaming and fin...
"$10 thousand per minute of downtime: architecture, queues, streaming and fin...
Fwdays
 
"NATO Hackathon Winner: AI-Powered Drug Search", Taras Kloba
"NATO Hackathon Winner: AI-Powered Drug Search",  Taras Kloba"NATO Hackathon Winner: AI-Powered Drug Search",  Taras Kloba
"NATO Hackathon Winner: AI-Powered Drug Search", Taras Kloba
Fwdays
 
Y-Combinator seed pitch deck template PP
Y-Combinator seed pitch deck template PPY-Combinator seed pitch deck template PP
Y-Combinator seed pitch deck template PP
c5vrf27qcz
 
Session 1 - Intro to Robotic Process Automation.pdf
Session 1 - Intro to Robotic Process Automation.pdfSession 1 - Intro to Robotic Process Automation.pdf
Session 1 - Intro to Robotic Process Automation.pdf
UiPathCommunity
 
Dandelion Hashtable: beyond billion requests per second on a commodity server
Dandelion Hashtable: beyond billion requests per second on a commodity serverDandelion Hashtable: beyond billion requests per second on a commodity server
Dandelion Hashtable: beyond billion requests per second on a commodity server
Antonios Katsarakis
 
What is an RPA CoE? Session 2 – CoE Roles
What is an RPA CoE?  Session 2 – CoE RolesWhat is an RPA CoE?  Session 2 – CoE Roles
What is an RPA CoE? Session 2 – CoE Roles
DianaGray10
 
Christine's Supplier Sourcing Presentaion.pptx
Christine's Supplier Sourcing Presentaion.pptxChristine's Supplier Sourcing Presentaion.pptx
Christine's Supplier Sourcing Presentaion.pptx
christinelarrosa
 
Christine's Product Research Presentation.pptx
Christine's Product Research Presentation.pptxChristine's Product Research Presentation.pptx
Christine's Product Research Presentation.pptx
christinelarrosa
 
Northern Engraving | Nameplate Manufacturing Process - 2024
Northern Engraving | Nameplate Manufacturing Process - 2024Northern Engraving | Nameplate Manufacturing Process - 2024
Northern Engraving | Nameplate Manufacturing Process - 2024
Northern Engraving
 
Harnessing the Power of NLP and Knowledge Graphs for Opioid Research
Harnessing the Power of NLP and Knowledge Graphs for Opioid ResearchHarnessing the Power of NLP and Knowledge Graphs for Opioid Research
Harnessing the Power of NLP and Knowledge Graphs for Opioid Research
Neo4j
 
GlobalLogic Java Community Webinar #18 “How to Improve Web Application Perfor...
GlobalLogic Java Community Webinar #18 “How to Improve Web Application Perfor...GlobalLogic Java Community Webinar #18 “How to Improve Web Application Perfor...
GlobalLogic Java Community Webinar #18 “How to Improve Web Application Perfor...
GlobalLogic Ukraine
 
Poznań ACE event - 19.06.2024 Team 24 Wrapup slidedeck
Poznań ACE event - 19.06.2024 Team 24 Wrapup slidedeckPoznań ACE event - 19.06.2024 Team 24 Wrapup slidedeck
Poznań ACE event - 19.06.2024 Team 24 Wrapup slidedeck
FilipTomaszewski5
 
Getting the Most Out of ScyllaDB Monitoring: ShareChat's Tips
Getting the Most Out of ScyllaDB Monitoring: ShareChat's TipsGetting the Most Out of ScyllaDB Monitoring: ShareChat's Tips
Getting the Most Out of ScyllaDB Monitoring: ShareChat's Tips
ScyllaDB
 
GNSS spoofing via SDR (Criptored Talks 2024)
GNSS spoofing via SDR (Criptored Talks 2024)GNSS spoofing via SDR (Criptored Talks 2024)
GNSS spoofing via SDR (Criptored Talks 2024)
Javier Junquera
 
QA or the Highway - Component Testing: Bridging the gap between frontend appl...
QA or the Highway - Component Testing: Bridging the gap between frontend appl...QA or the Highway - Component Testing: Bridging the gap between frontend appl...
QA or the Highway - Component Testing: Bridging the gap between frontend appl...
zjhamm304
 
Demystifying Knowledge Management through Storytelling
Demystifying Knowledge Management through StorytellingDemystifying Knowledge Management through Storytelling
Demystifying Knowledge Management through Storytelling
Enterprise Knowledge
 
A Deep Dive into ScyllaDB's Architecture
A Deep Dive into ScyllaDB's ArchitectureA Deep Dive into ScyllaDB's Architecture
A Deep Dive into ScyllaDB's Architecture
ScyllaDB
 
Mutation Testing for Task-Oriented Chatbots
Mutation Testing for Task-Oriented ChatbotsMutation Testing for Task-Oriented Chatbots
Mutation Testing for Task-Oriented Chatbots
Pablo Gómez Abajo
 
What is an RPA CoE? Session 1 – CoE Vision
What is an RPA CoE?  Session 1 – CoE VisionWhat is an RPA CoE?  Session 1 – CoE Vision
What is an RPA CoE? Session 1 – CoE Vision
DianaGray10
 
Leveraging the Graph for Clinical Trials and Standards
Leveraging the Graph for Clinical Trials and StandardsLeveraging the Graph for Clinical Trials and Standards
Leveraging the Graph for Clinical Trials and Standards
Neo4j
 

Recently uploaded (20)

"$10 thousand per minute of downtime: architecture, queues, streaming and fin...
"$10 thousand per minute of downtime: architecture, queues, streaming and fin..."$10 thousand per minute of downtime: architecture, queues, streaming and fin...
"$10 thousand per minute of downtime: architecture, queues, streaming and fin...
 
"NATO Hackathon Winner: AI-Powered Drug Search", Taras Kloba
"NATO Hackathon Winner: AI-Powered Drug Search",  Taras Kloba"NATO Hackathon Winner: AI-Powered Drug Search",  Taras Kloba
"NATO Hackathon Winner: AI-Powered Drug Search", Taras Kloba
 
Y-Combinator seed pitch deck template PP
Y-Combinator seed pitch deck template PPY-Combinator seed pitch deck template PP
Y-Combinator seed pitch deck template PP
 
Session 1 - Intro to Robotic Process Automation.pdf
Session 1 - Intro to Robotic Process Automation.pdfSession 1 - Intro to Robotic Process Automation.pdf
Session 1 - Intro to Robotic Process Automation.pdf
 
Dandelion Hashtable: beyond billion requests per second on a commodity server
Dandelion Hashtable: beyond billion requests per second on a commodity serverDandelion Hashtable: beyond billion requests per second on a commodity server
Dandelion Hashtable: beyond billion requests per second on a commodity server
 
What is an RPA CoE? Session 2 – CoE Roles
What is an RPA CoE?  Session 2 – CoE RolesWhat is an RPA CoE?  Session 2 – CoE Roles
What is an RPA CoE? Session 2 – CoE Roles
 
Christine's Supplier Sourcing Presentaion.pptx
Christine's Supplier Sourcing Presentaion.pptxChristine's Supplier Sourcing Presentaion.pptx
Christine's Supplier Sourcing Presentaion.pptx
 
Christine's Product Research Presentation.pptx
Christine's Product Research Presentation.pptxChristine's Product Research Presentation.pptx
Christine's Product Research Presentation.pptx
 
Northern Engraving | Nameplate Manufacturing Process - 2024
Northern Engraving | Nameplate Manufacturing Process - 2024Northern Engraving | Nameplate Manufacturing Process - 2024
Northern Engraving | Nameplate Manufacturing Process - 2024
 
Harnessing the Power of NLP and Knowledge Graphs for Opioid Research
Harnessing the Power of NLP and Knowledge Graphs for Opioid ResearchHarnessing the Power of NLP and Knowledge Graphs for Opioid Research
Harnessing the Power of NLP and Knowledge Graphs for Opioid Research
 
GlobalLogic Java Community Webinar #18 “How to Improve Web Application Perfor...
GlobalLogic Java Community Webinar #18 “How to Improve Web Application Perfor...GlobalLogic Java Community Webinar #18 “How to Improve Web Application Perfor...
GlobalLogic Java Community Webinar #18 “How to Improve Web Application Perfor...
 
Poznań ACE event - 19.06.2024 Team 24 Wrapup slidedeck
Poznań ACE event - 19.06.2024 Team 24 Wrapup slidedeckPoznań ACE event - 19.06.2024 Team 24 Wrapup slidedeck
Poznań ACE event - 19.06.2024 Team 24 Wrapup slidedeck
 
Getting the Most Out of ScyllaDB Monitoring: ShareChat's Tips
Getting the Most Out of ScyllaDB Monitoring: ShareChat's TipsGetting the Most Out of ScyllaDB Monitoring: ShareChat's Tips
Getting the Most Out of ScyllaDB Monitoring: ShareChat's Tips
 
GNSS spoofing via SDR (Criptored Talks 2024)
GNSS spoofing via SDR (Criptored Talks 2024)GNSS spoofing via SDR (Criptored Talks 2024)
GNSS spoofing via SDR (Criptored Talks 2024)
 
QA or the Highway - Component Testing: Bridging the gap between frontend appl...
QA or the Highway - Component Testing: Bridging the gap between frontend appl...QA or the Highway - Component Testing: Bridging the gap between frontend appl...
QA or the Highway - Component Testing: Bridging the gap between frontend appl...
 
Demystifying Knowledge Management through Storytelling
Demystifying Knowledge Management through StorytellingDemystifying Knowledge Management through Storytelling
Demystifying Knowledge Management through Storytelling
 
A Deep Dive into ScyllaDB's Architecture
A Deep Dive into ScyllaDB's ArchitectureA Deep Dive into ScyllaDB's Architecture
A Deep Dive into ScyllaDB's Architecture
 
Mutation Testing for Task-Oriented Chatbots
Mutation Testing for Task-Oriented ChatbotsMutation Testing for Task-Oriented Chatbots
Mutation Testing for Task-Oriented Chatbots
 
What is an RPA CoE? Session 1 – CoE Vision
What is an RPA CoE?  Session 1 – CoE VisionWhat is an RPA CoE?  Session 1 – CoE Vision
What is an RPA CoE? Session 1 – CoE Vision
 
Leveraging the Graph for Clinical Trials and Standards
Leveraging the Graph for Clinical Trials and StandardsLeveraging the Graph for Clinical Trials and Standards
Leveraging the Graph for Clinical Trials and Standards
 

The geological time scale

  • 1. The Geological Time Scale 8-2.4 Recognize the relationship among the units—era, epoch, and period—into which the geologic time scale is divided. 8-2.5 Illustrate the vast diversity of life that has been present on Earth over time by using the geologic time scale. 8-2.2 Summarize how scientists study Earth’s past environment and diverse life- forms by examining different types of fossils (including molds, casts, petrified fossils, preserved and carbonized remains of plants and animals, and trace fossils). 8-2.3 Explain how Earth’s history has been influenced by catastrophes (including the impact of an asteroid or comet, climatic changes, and volcanic activity) that have affected the conditions on Earth and the diversity of its life-forms.
  • 2. Events in Your Life • ___When you started second grade • ___When you were born • ___ When you started kindergarten • ___When you learned to ride a bike. • ___ When you learned to walk. • ___ When you learned to read. • ___ When you lost your first tooth. • ___ Today’s date. Construct a timeline of the important events in your life. Be sure to include all of the events listed below and any other events you feel are important. Your timeline should be constructed TWO ways: 1) Numerical Order (use actual dates) 2) Sequential Order (most recent at top)
  • 3.
  • 4.
  • 5. 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 the time scale by studying rock layers and fossils world wide. • Radioactive dating helped determine the absolute divisions in the time scale.
  • 6.
  • 7.
  • 8. Divisions of Geologic Time • Eras are subdivided into periods...periods are subdivided into epochs. Era Period Epoch E + P = EP
  • 9. Divisions of Geologic Time • Geological time begins with Precambrian Time. Precambrian time covers approximately 88% of Earth’s history.
  • 10.
  • 11. FOUR Eras… • PRE-CAMBRIAN – 88% of earth’s history • Paleozoic (ancient life) – 544 million years ago…lasted 300 million yrs • Mesozoic (middle life) – 245 million years ago…lasted 180 million yrs • Cenozoic (recent life) – 65 million years ago…continues through present day
  • 12. Today… • Today we are in the Holocene Epoch of the Quaternary Period of the Cenozoic Era. Which unit is the largest? Which unit is the smallest?
  • 13. Today… • Today we are in the Holocene Epoch of the Quaternary Period of the Cenozoic Era. Which unit is the largest? Which unit is the smallest?
  • 14.
  • 15. Paleozoic Era (Ancient Life) • The Cambrian period is the 1st period of the Paleozoic Era. “Age of the Trilobites” • Explosion of life in the oceans began during this era. • Most of the continents were covered in warm, shallow seas. – Invertebrates were dominate - Trilobites – Fish emerged during this time – Fish led to the arrival of amphibians • The end of the Paleozoic era is called the “Age of Amphibians” – Early land plants including mosses, ferns and cone-bearing plants. – The early coal forming forests were also formed during this time.
  • 16. Paleozoic Era • Much of the limestone quarried for building and industrial purposes, as well as the coal deposits of western Europe and the eastern United States, were formed during the Paleozoic. • The Cambrian (beginning) opened with the breakup of the world-continent Rodinia and closed with the formation of Pangaea, as the Earth's continents came together once again. – This event is thought to have caused the climate changes that led to mass extinction event. • The Appalachian mountains were formed during this time.
  • 17. Paleozoic Era • At the end of the Paleozoic, the largest mass extinction in history wiped out approximately 90% of all marine animal species and 70% of land animals. – Possible causes of this Mass Extinction Event • Lowering of sea levels when the continents were rejoined as Pangaea (convergent boundary) • Increased volcanic activity (ash and dust) • Climate changes – cooler climate
  • 18. Trilobites • Lived in Earth’s ancient seas • Extinct before the dinosaurs came into existence • Cambrian Period is know as the “Age of the Trilobites” (put in on table)
  • 19. Brachiopods • Marine animals that resemble clams.
  • 20. Early Fish Early fish did not have jaws. Some species of sharks were in existence at this time.
  • 21. Frilled Shark that was found in Japan in January 2007. This shark was considered a “living fossil”
  • 22. Early Land Plants Cone bearing plants Ferns Mosses
  • 23. Mesozoic Era – Middle Life • At the beginning of this era the continents were joined as Pangaea. • Pangaea broke up around the middle of this era. • Reptiles became the most abundant animals because of their ability to adapt to the drier climate of the Mesozoic Era. – Skin maintains body fluids – Embryos live in shells
  • 24. Mesozoic Era • Dinosaurs were also very active in this era. – First small dinosaurs appeared in the Triassic Period. – Larger and more abundant dinosaurs appeared in the Jurassic Period. • Small mammals and birds also appeared during this era. – The mammals were small, warm-blooded animals. Hair covering their bodies. • These characteristics help them survive in changing environments.
  • 25.
  • 26.
  • 27.
  • 28. Mesozoic Era • The main plant life of this time were Gymnosperms or plants that produce seeds, but no flowers. – Pine Trees • Flowering plants appeared during the END of this era.
  • 29. Mesozoic Era • This era ended with a mass extinction event about 65 million years ago. – Many groups of animals, including the dinosaurs disappeared suddenly at this time. • Many scientists believe that this event was caused by a comet or asteroid colliding with the Earth.
  • 30.
  • 31.
  • 32.
  • 33.
  • 35. Mesozoic Era – Mass Extinction Event • Asteroid or Comet collides with Earth. – Huge cloud of smoke and dust fills the air – Blocks out sunlight – Plants die – Animals that eat plants die – Animals that eat plant-eaters die. • However, not all forms of life died during this event. Many animals that you see today are descendants from the survivors of this extinction event.
  • 39.
  • 40. Mesozoic Plants Flowering plants evolved towards the end of the Mesozoic Era.
  • 41. Cenozoic Era – Recent Life • Began about 65 million years ago and continues today!!!!! – Climate was warm and mild. – Marine animals such as whales and dolphins evolved. • Mammals began to increase and evolve adaptations that allowed them to live in many different environments – land, air and the sea. – Grasses increased and provided a food source for grazing animals • Many mountain ranges formed during the Cenozoic Era – Alps in Europe and Himalayas in India; Rocky Mountains in the USA
  • 42. Cenozoic Era • Growth of these mountains may have helped to cool down the climate – Ice Ages occurred late in the Cenozoic Era (Quaternary Period). • As the climate changed, the animals had to adapt to the rise and fall of the oceans caused by melting glaciers. • This era is sometimes called the “Age of Mammals”
  • 43. Cenozoic Era • Marine animal examples: – Algae, Mollusks, Fish and Mammals • Land animal examples: – Bats, Cats, Dogs, Cattle and Humans – Humans are thought to have appeared around 3.5 million years ago (during the most recent period – Quaternary). • Flowering plants were now the most common plant life.
  • 45. Flowering Plants were common during the Cenozoic Era
  • 46. Life forms found in each Era • On your worksheet,: - List Geologic Events found in each Era. - List Life forms found in each Era. - Draw pictures of Life Forms… USE COLOR! Make sure you are putting them in the correct block!!