Download MINING AND NATURAL RESOURCES

VOLCANOES AND VOLCANIC ACTIVITY
Identifying Volcanic Landforms
Volcanoes are important features of Earth’s surface geology. For this exercise, you will visit a
number of localities around the world where volcanic landforms can be observed. Your task will
be to identify the different volcanic landforms in the table below.
Fig. 1.
Google Earth image of SP Crater, northern Arizona, USA.
Enter the geographic coordinates for each feature below in the query bar of Google Earth.
Once the feature has been located, zoom in or out to the indicated altitude, then identify the
volcanic feature centered in the image. Remember, (+) values are north latitude and east
longitude; (-) values are south latitude and west longitude.
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Use the following terms from the text to complete the following exercise (some will be used
more than once):
Composite Volcano
Caldera (Crater Lake)
Lava Dome
Shield Volcano
Lahar
Lava Flows
Cinder Cone
Pyroclastic Flow
Volcanic Crater
LATITUDE (deg)
LONGITUDE
(deg)
ALTITUDE (km)
LANDFORM
A
35.366673
138.733347
20.0
Composite volcano
B
19.540564
-155.534218
170.0
Shield volcano
C
13.355781
40.401039
12.0
Shield volcano
D
35.345654
-111.375522
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Cinder Cone
Use Tilt Bar to
view horizontally.
In new window,
look up “SP Crater”
in Wikipedia for
volcano type.
E
14.916362
-24.375447
28.5
Composite Volcano
Click on Wikipedia
button to identify
F
35.363923
-111.375522
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Lava Flow
G
-0.378905
-91.514776
32
Shield Volcano
Click grey box &
Wikipedia box for
description
H
50.855056
155.558648
18
Click grey box,
scroll down
wikipedia article,
click ‘full article’ to
2
Composite Volcano
find volcano type
I
46.199442
-122.188722
5.0
Lava Dome,
Composite Volcano
open Wikipedia
box for details
J
46.153338
-122.094025
16
Pyroclastic Flow
K
42.93680
-122.104928
18.2
Caldera (crater lake
L
41.396334
-122.19003
19.0
Composite volcano
open wikipedia box
for details
M
-3.064728
37.358316
4.75
N
14.986742
120.222811
12
Lahar
O
13.254101
123.685199
15
Composite volcano
P
-7.951140
112.951327
4.75
3
Volcanic crater
Caldera
ADDITIONAL QUESTIONS:
1. Type in coordinates for “M”, zoom out to approximately 43 km altitiude – click on grey
dot shown and list the following information from the Wikipedia Window:
Volcano Name:_____Mt. Shasta_____________
Type of Volcano:____Stratovolcano________________________
Location:________California Cascades________
2. What type of volcanic rocks would you expect to be erupted from ‘B’ above? Basalt
3. Find feature “J” using coordinates in Google Earth. Use the ‘Measure’ tool to estimate
the diameter of the feature in ‘J’. What is the diameter of this feature (measure at widest
point)? 9-10km
4. The feature in ‘J’ is approximately circular. Using the ‘measure’ tool and ‘path’ feature,
measure the distance around it in km. What is the distance? 28km
5. Use the ‘Measure’ tool in Google Earth to determine the distance from the feature in ‘K’
and the summit of its parent volcano. How far is it (zoom out to show this feature fully)?
Ca 30km
6. Use the ‘Measure’ tool in Google Earth to determine the distance from the feature in ‘O’
and the summit of its parent volcano. How far is it? Ca 20km
7. Use the ‘Measure’ tool to determine the length and width of the feature in ‘Q’. ca 85 x
27km
8. Using Wikipedia, look up a composite volcano (stratovolcano) not featured above. Click
on example, and look up the coordinates for it at the top of the page. Click on the
coordinates. At web page shown, scroll down the page to find “Google Earth”
highlighted, and click on ‘locate’. Mt. St. Helens Washington
List the coordinates:___________________________________
Volcano name:_______________________________________
Location and brief
description:______________________________________________________________
________________________________________________________________________
9. Using Wikipedia, look up a shield volcano not featured above. Click on example, and
look up the coordinates for it at the top of the page. Click on the coordinates. At web
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page shown, scroll down the page to find “Google Earth” highlighted, and click on
‘locate’. Kilauea, Hawaiian Islands
List the coordinates:___________________________________
Volcano name:_______________________________________
Location and brief
description:______________________________________________________________
________________________________________________________________________
LINKS TO RELATED SITES:
Wikipedia entry on shield volcanoes: http://en.wikipedia.org/wiki/Shield_volcano
Wikipedia entry on composite volcanoes: http://en.wikipedia.org/wiki/Composite_volcano
Wikipedia entry on lava flows: http://en.wikipedia.org/wiki/Lava_flow
Wikipedia entry on calderas: http://en.wikipedia.org/wiki/Caldera
Wikipedia entry on pyroclastic flows: http://en.wikipedia.org/wiki/Pyroclastic_flow
Wikipedia entry on lahars: http://en.wikipedia.org/wiki/Lahar
Wikipedia entry on cinder cones: http://en.wikipedia.org/wiki/Cinder_cone
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