✅CASE STUDY - San Andreas Fault Flashcards Preview

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Flashcards in ✅CASE STUDY - San Andreas Fault Deck (19)
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1

Where is the San Andreas fault?

California, USA

2

How long is the fault line?

1200km

3

What type of fault is it?

Transform fault

4

What type of late boundary is it on?

Conservative

5

Which plates meet at the boundary?

North American and Pacific

6

Which cities does the fault run through?

San Francisco, LA, San Jose, Long Beach

7

What is the estimated cost of damage of the next big earthquake by the US Geological Survey?

$33 billion

8

How much infrastructure runs though the fault line?

966 roads, 90 fibre optic cables, 39 gas pipes, 141 power lines

9

What secondary damage would occur due to an earthquake?

Fire, gas leaks, water leaks, cut off transport

10

What is the estimated death toll if an earthquake occurs?

1800

11

What tectonic impact would the earthquake have?

It will destabilise the tectonics of the region to such an extent that powerful aftershock occur

12

When did the US Geological Survey begin drilling into the lithosphere?`

2004

13

Why did they drill into the lithosphere around the fault?

To insert instruments directly into the fault line to directly reveal the physical and chemical processes controlling earthquake generation

14

At what depths do the measuring instruments lie?

2-3km

15

What information do the measuring instruments provide?

Seismological observations of small earthquakes, measurements of rock deformation

16

How accurately can earthquakes be predicted?

Not very accurately, still unpredictable

17

Why are conservative plate boundaries often considered the deadliest?

Because of the severity of the earthquakes that occur there

18

Why are the earthquakes so powerful?

Because so much pressure builds up as the friction between the plates increases

19

Why will the affected area be increased?

An earthquake anywhere along the fault will send violent shockwaves rippling down the fault