Lab 7 - Geologic Structures-In class lab
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School
CUNY College of Staten Island *
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Course
101
Subject
Geology
Date
Dec 6, 2023
Type
Pages
6
Uploaded by ProfessorMetalEchidna20
Lab 7: Geologic Structures – Geo 101
Name: ------------------------------------
Date: ----------
Required materials
Pencil, Colored pencils, Ruler, and Computer with Google Earth software loaded
In-class lab exercises
Part 1 Rock Deformation
: Complete the table.
1
aulie
Hernandez
10123/29
⑤
icattart
-
⑱
.
>
23
shortened
tension
normal
SE
lengthened
compression
Reverse
NW
neither
Shear
Strike
Sli
NS
Part
2
Interpretation of
a
cross-section
The diagram shows a cross-section (i.e. a vertical slice) through a sequence of deformed
sedimentary rocks.
1.
Highlight the fault plane in red.
2.
Is this a strike-slip or a dip-slip fault?
3.
Draw half-arrows on either side of the fault plane to indicate which direction the
beds of sedimentary rock have moved.
4.
Label the hanging wall block and the footwall block.
5.
Has the hanging wall moved up or down?
6.
What specific type of fault is illustrated here?
7.
Draw and label the axial planes of the 2 folds in blue.
8.
Label the limbs of the folds, and label each fold with the correct name.
9.
What type of stress resulted in the deformation seen in this cross-
section?
2
x
Reverse
1
Hansing
X
Anticite
·
y
*
wall
N
↓
⊥
Staalike
E
Foot
wall
Di
-
Sli
move
?
data
live
Reverse
compressive
stress
Part
3
Interpretation
of
photographs
Go to
http://www.gigapan.com/gigapans/160713
1.
Sketch the fault shown in the photograph in the space below.
2.
Highlight the fault plane in red.
3.
Is this a strike-slip or a dip-slip fault?
3
!
Di
Slip
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4.
Draw half-arrows on either side of the fault plane to indicate which direction the
beds of sedimentary rock have moved.
5.
Label the hanging wall block and the footwall
block.
6.
Has the hanging wall moved up or down?
7.
What specific type of fault is illustrated here?
Go to
http://www.gigapan.com/gigapans/160717
1.
Sketch the fault shown in the photograph in the space below.
2.
Highlight the fault plane in red.
3.
Is this a strike-slip or a dip-slip fault?
4.
Draw half-arrows on either side of the fault plane to indicate which direction the
beds of sedimentary rock have moved.
5.
Label the hanging wall block and the footwall block.
6.
Has the hanging wall moved up or down?
4
The
hanging
wall
moved
down
rectal
Normal
fault
#
Hanging
-
·
Wak
/
#
,
Faazwak
Disi
moved
up
relative
to
footwall
7.
What specific type of fault is illustrated here?
The diagram above shows an aerial photograph (i.e. a map view) through a sequence of
deformed sedimentary rocks. You can look at this area in more detail by opening
Google Earth, searching for “Las Vegas” and examining the area about 5 miles to the
east of the city.
1.
In the photograph, you can clearly see the offset in the beds of sedimentary rock where
the fault has moved.
2.
Using this information, highlight the fault plane in red on the photograph.
3.
Is this a strike-slip or a dip-slip fault?
4.
Draw half-arrows on either side of the fault plane to indicate which direction the
beds of sedimentary rock have moved.
5.
What specific type of fault is illustrated here?
6.
Either using the scale on the photograph or using the ruler tool in Google Earth,
measure distance (in feet) that the rock units have been displaced by the fault.
5
Strike
Sli
-
⑪
⊥
-
⑧
-
⑧
I
Strike
Si
staine
SD
653
294ft
7.
What type of stress caused the deformation seen in this area?
6
Shear
Stress
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