Download Lab. 1 Geologic time scale

Prof. Mohammad Gameil
Lab. 1
Geologic time scale
The geologic time scale is considered the calendar of earth history. On the geologic
time scale, the oldest events are found at the bottom and the youngest events are
found at the top. Can you figure out why geologists follow this convention? It
follows the Law of Superposition! (In an undisturbed sequence of strata the oldest
rocks are at the base and the youngest rocks are at the top)
Study the geologic time scale below; Try to identify the different Eons, Eras,
Periods and Epochs. Compare the different life forms during each period as well as
the evolution of life until the present day.
1- When did early invertebrates appear:
2- What is the age of the Taconic Orogeny?
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Prof. Mohammad Gameil
3- When did land plants begin?
4- What is the age of the Acadian Orogeny?
5- What is the age of fish?
6- When did coal swamps spread all over the world?
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7- What is the age of Dinosaurs?
8- At which age was the gigantic extinction?
9- When did dinosaurs dye out?
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What is the age of mammals?
11-
When did first whales appear?
12-
Which country has a protectorate for whale skeletons?
13-
When did first monkeys appear?
14-
Are there fossil monkeys in Saudi Arabia?
15-
When did rugose corals dye out?
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When did scleractinian corals appear?
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When did ammonites dye out?
18-
Can we have rudists in the Eocene?
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19- When did planktonic foraminifera appear?
20- What is the age characteristic for Nummulites?
21- Are Nummulites good index fossils?
22- When did the continents assemble together?
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23- What was the name of the big
supercontinent?
24- What is the name of the northern and
southern continents?
25- When did the Atlantic Ocean form?
26- What is the age of the Red Sea?
27- What is meant by Tertiary Period?
28- What is meant by Quaternary Period?
29- The Tertiary Period is divided into epochs,
Mention these epochs?
30- What are the subdivisions of the Paleogene?
31- What are the subdivisions of the Neogene?
32- What is the age of Himalayas?
33- When did ice age end?
34- What is the earliest fossil record of Life?
35-
Mention the times of the five mass extinctions?
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