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Geology Chapter 10 > Chapter 11 > Flashcards

Chapter 11 Flashcards

1
Q

What are 2 things John Wesley Powell known for?

A

rafting down the Grand Canyon and being the second director of the USGS

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2
Q

What does USGS mean

A

United States geological survey

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3
Q

who is the father of modern geology?

A

Dr. James Hutton

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4
Q

Who published the “Theory of the Earth in 1785”

A

Dr. James Hutton

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5
Q

who published the origin of continents and oceans in 1915?

A

Alfred Wegener

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6
Q

What are two things that Alfred Wegner is best known for?

A

Continental drift hypothesis: plate tectonics and Pangea

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7
Q

What was the first national park in the use and the world

A

Yellowstone national park

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8
Q

What are the 5 principles/laws of relative dating?

A 
original horizontality
superposition
cross cutting
inclusions
unconformities
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9
Q

what principle/law deals with faults and igneous intrusions

A

cross cutting

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10
Q

what main rock type are fossils found in

A

sedimentary rocks

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11
Q

what two things are needed for fossil preservation?

A

possession of hard part

rapid burial

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12
Q

what is the largest shark that has ever existed?

A

megalodon

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13
Q

what are the six different types of fossilization?

A

Petrification

cast

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14
Q

Name 4 types of trace fossils

A

tracks
burrows
corpolites
gastroliths

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15
Q

what are the 5 things used in correlation of rocks?

A 
relative dating
fossil succession
radiometric dating
rock type 
rock structure
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16
Q

What is the only age dating technique that gives you numerical values?

A

Radiometric Dating

17
Q

When you use radiometric age dating on metamorphic rock, what does that number tell you? and why?

A

Age of metamorphic event, not the age of the rock.

it resets the time clock

18
Q

What rocks are most reliable with radiometric dating?

A

Igneous and metamorphic

19
Q

How do scientists make up for the problems in radiometric dating?

A

must have a range to cover problems…can not give a precise number

20
Q

What are the 2 eons on the geologic time scale?

A

Precambrian

phanerzoic

21
Q

What does Phanerzoic mean?

A

Visible lIfe

Geology Chapter 10 (3 decks)

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