Day 37 What are index fossils Index fossils

Use Index Fossils (Part 1, steps 10 -12) Investigation 7 Fossils and Time 2

Index Fossil Correlations v. Turn to page 61 and cut out the profiles of

Same at Grand Canyon & Zion Kaibab and Z 1 have the same index

Same at Zion & Bryce Z 7 and B 5 have the same index

Compare Ages -- B 3 vs. Supai B 3 is younger than B 1

Compare Ages -- B 2 vs. Z 1 B 2 is younger than B

Environment for B 9 Since coal forms from decayed plants, the environment must have

Ca. SE Book Student Resource Book, page 50 11

Ca. SE Book Student Resource Book, page 50 13

Wrap up n n n Turn to page 63 and complete the index-fossil correlation

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Day 37 What are index fossils? Index fossils are the remains or traces of organisms that lived for only a short time, but in many places around the world. Why are index fossils useful to geologists? When geologists find an index fossil in a rock layer, they know it is about the same age as all other rock layers that contain the same index fossil. Daily Warm-Up Exercises 1

Use Index Fossils (Part 1, steps 10 -12) Investigation 7 Fossils and Time 2

Index Fossil Correlations v. Turn to page 61 and cut out the profiles of Bryce Canyon and Zion National Park. v. Color all the same fossils the same color. Ex: color all the Wingatea pink. v. Place the two profiles on page 59 and attach them so the index fossils are aligned correctly. (Line up the layers with the same fossils. ) 3

Same at Grand Canyon & Zion Kaibab and Z 1 have the same index fossils 4

Same at Zion & Bryce Z 7 and B 5 have the same index fossils Z 2 and B 1 also have the same index fossils 5

Same at Grand Canyon & Bryce None 6

Compare Ages -- B 3 vs. Supai B 3 is younger than B 1 is from early Triassic Supai is from late Pennsylvania Triassic is more recent than Pennsylvania B 3 is younger than Supai 7

Compare Ages -- B 2 vs. Z 1 B 2 is younger than B 1 is from early Triassic Z 1 is from Permian Triassic is more recent than Permian B 2 is younger than Z 1 8

Environment for B 9 Since coal forms from decayed plants, the environment must have had a lot of plants. The sandstone means that sand was present. The area was probably swampy or on a floodplain. 9

Labels Exercise 7. 2 10

Ca. SE Book Student Resource Book, page 50 11

Captions Exercise 7. 3 12

Ca. SE Book Student Resource Book, page 50 13

Wrap up n n n Turn to page 63 and complete the index-fossil correlation questions. You will turn in yesterdays Index Fossil ws, your correlated paper that you glued the layers on and pg. 63 all at the same time. Turn in to me in this order: On top: Index Fossils and ID ws Next: The 3 canyons lined up Last page: Ws 63, Index Fossil Questions 14