Geologic Time. Mr. Skirbst
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1 Geologic Time Mr. Skirbst
2 Geologic Time
3 Geologic Time Scale Describing and dividing major events of Earth s history
4 Like a timeline of your life!
5 Birth Like a timeline of your life!
6 Like a timeline of your life! Birth First Word
7 Like a timeline of your life! Birth First Word First Day School
8 Like a timeline of your life! Birth First Word First Day School Graduation Day
9 Like a timeline of your life! Birth First Word First Day School Graduation Day Married
10 Like a timeline of your life! Birth First Word First Day School Graduation Day Married Death
11 Geologic Time Scale
12 Geologic Time Scale Era - longest division of geologic time
13 Geologic Time Scale Era - longest division of geologic time 4 Major Eras
14 Geologic Time Scale Era - longest division of geologic time 4 Major Eras Period sub-divisions of eras
15 Geologic Eras
16 Geologic Eras 1. Precambrian - early Earth
17 Geologic Eras 1. Precambrian 2. Paleozoic old life
18 Geologic Eras 1. Precambrian 2. Paleozoic 3. Mesozoic middle life
19 Geologic Eras 1. Precambrian 2. Paleozoic 3. Mesozoic 4. Cenozoic current life
20 Precambrian Era 4.6 bya 570 mya
21 Precambrian Era 4.6 bya 570 mya (bya= billion years ago mya = million years ago)
22 Precambrian Era * Earth formed
23 Precambrian Era * Earth formed * Seas and mountains formed
24 Precambrian Era * Earth formed * Seas and mountains formed * Simple life-forms in sea
25 Precambrian Era * Earth formed * Seas and mountains formed * Simple life-forms in sea * Oxygen builds up in air
26 Paleozoic Era 570 mya 225 mya
27 Paleozoic Era 570 mya 225 mya Divided into 6 periods based on major events
28 Periods of Paleozoic Era Cambrian sea-dwelling inverts.
29 Periods of Paleozoic Era Cambrian sea-dwelling inverts. Ordovician first fish appear
30 Periods of Paleozoic Era Cambrian sea-dwelling inverts. Ordovician first fish appear Silurian first land plants
31 Periods of Paleozoic Era Cambrian sea-dwelling inverts. Ordovician first fish appear Silurian first land plants Devonian first amphib. + forests
32 Periods of Paleozoic Era Carboniferous swamps, ferns, insects, reptiles
33 Periods of Paleozoic Era Carboniferous swamps, ferns etc Permian conifers, lots of reptiles
34 Periods of Paleozoic Era Cambrian sea-dwelling inverts. Ordovician first fish appear Silurian first land plants Devonian first amphib. + forests Carboniferous swamps, ferns etc Permian conifers, lots of reptiles
35 Periods of Paleozoic Era Memory aid: COSDCP
36 Periods of Paleozoic Era Memory aid: COSDCP Come Over, Said DC Pig
37 Mesozoic Era 225 mya 65 mya
38 Periods of Mesozoic Era Triassic 1 st dinosaurs + mammals
39 Periods of Mesozoic Era Triassic 1 st dinosaurs + mammals Jurassic 1 st birds + big dinos
40 Periods of Mesozoic Era Triassic 1 st dinosaurs + mammals Jurassic 1 st birds + big dinos Cretaceous 1 st flowers + dinos die out
41 Periods of Mesozoic Era Triassic Jurassic Cretaceous
42 Periods of Mesozoic Era Tiger Juggling Chainsaws Triassic Jurassic Cretaceous
43 Extinction Theory - Explains the mass extinction
44 C-T Boundary *Proposed by Walter & Luis Alvarez
45
46 C-T Boundary *Proposed by Walter & Luis Alvarez *Radioactive sediment found between Cretaceous & Tertiary Periods.
47 C-T Boundary *Proposed by Walter & Luis Alvarez *Radioactive sediment found between Cretaceous & Tertiary Periods. *Due to asteroid collision
48
49 C-T Boundary *Proposed by Walter & Luis Alvarez *Radioactive sediment found between Cretaceous & Tertiary Periods. *Due to asteroid collision *Caused dinosaur extinction
50
51 Cenozoic Era 65 mya Present
52 Periods of Cenozoic Era Tertiary mammals, presentday features
53 Periods of Cenozoic Era Tertiary mammals, present-day features Quaternary humans, ice ages
54 Geologic Time Scale
55 Geologic Time Lab
56 Geologic Time Lab DATE of EVENT Color code according to Era Major Event
57 Geologic Time Lab Today 4.6 BYA
58 Geologic Time Lab Today 4.6 BYA
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