1. Why does the present day stream valley bend sharply at the San Andreas Fault?
1. Why does the present day stream valley bend sharply at the San Andreas Fault?
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![Drawing Tools Lab 11-plate tectonics(sp21)-Jgzo [Compatibility Mode] - Word (Product Activation Faile
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EXPLANATION:
Figure 1 shows a geologic map along part of the San Andreas Fault, a transform fault that is the
boundary of the North American and Pacific plates. At this location, the two plates are sliding
past each other. Wallace Creek flows to the northwest from the Tremblor Mountains across the
fault. Figure 1 shows the distribution of younger (3680 years to today) and older (10,000 to 3680
years) sediments deposited by the creek. These ages were derived from carbon-14 dating.
QUESTIONS:
1. Why does the present day stream valley bend sharply at the San Andreas Fault?
2. What evidence is there on the map for vertical (up and down) movement along the fault?
3. What do you predict will happen to the course of the creek in the future? Draw on the map if it
helps.
4. Draw arrows on Figure 4 to show the direction of movement of the plates on either side of the
fault
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4+
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>>A
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Transcribed Image Text:Drawing Tools Lab 11-plate tectonics(sp21)-Jgzo [Compatibility Mode] - Word (Product Activation Faile
ngs
Review
View
Format
O Tell me what you want to do.
EXPLANATION:
Figure 1 shows a geologic map along part of the San Andreas Fault, a transform fault that is the
boundary of the North American and Pacific plates. At this location, the two plates are sliding
past each other. Wallace Creek flows to the northwest from the Tremblor Mountains across the
fault. Figure 1 shows the distribution of younger (3680 years to today) and older (10,000 to 3680
years) sediments deposited by the creek. These ages were derived from carbon-14 dating.
QUESTIONS:
1. Why does the present day stream valley bend sharply at the San Andreas Fault?
2. What evidence is there on the map for vertical (up and down) movement along the fault?
3. What do you predict will happen to the course of the creek in the future? Draw on the map if it
helps.
4. Draw arrows on Figure 4 to show the direction of movement of the plates on either side of the
fault
10
4+
144
>>A
prt sc
&
7
6
8
9.
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