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Title: Types of Volcanoes and Volcanic Eruptions:


1
  • Types of Volcanoes and Volcanic Eruptions
  • Stratovolcano (a.k.a. composite cone).
    Examples Mt. Pinatubo, Mt. St. Helens, Mt.
    Pelee, Mt. Vesuvius, Mt. Rainer, Mt. Fuji, etc.
  • Volcanic dome
  • Cinder Cones
  • Sheild Volcano. Example Hawaiian Islands
  • Fissure Eruptions. Examples Iceland, Columbia
    River, Deccan Traps, Keewanawan Lavas
  • Caldera Eruptions. Examples Krakatau,
    Yellowstone, Long Valley, Valles)

2
Fig. 7-33a, p.168
3
Fig. 7-33b, p.168
4
Fig. 7-33c, p.168
5
Fig. 7-33d, p.168
6
Fig. 7-22, p.162
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Fig. 5.17
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Fig. 7-41, p.173
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Fig. 7-36, p.169
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Fig. 7-23, p.163
13
Fig. 7-35, p.169
14
Fig. 5.36
Bruneau Jarbridge Volcanic Field, Idaho 12.5
m.y. caldera eruption
15
buried these guys. Ashfall Fossils State Park,
Nebraska Fossil Rhinoceros and Horses, 12.5 m.y.
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Fig. 6-9, p.133
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buried these guys. Ashfall Fossils State Park,
Nebraska Fossil Rhinoceros and Horses, 12.5 m.y.
21
Fig. 5.34
22
Fig. 6-41, p.145
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Fig. 6-40, p.145
24
  • Types of Intrusions
  • Pluton a large, intrusive igneous rock body,
    including batholiths, stocks, laccoliths, and
    lopoliths.
  • Dike a tabular intrusive igneous rock body that
    occurs across strata, discordant (cuts across at
    a high angle) to bedding.
  • Sill a tabular intrusive igneous rock body that
    occurs between strata, concordant (parallel) to
    bedding. Cf. Flow

25
Yosemite U-shaped Valley, California (granite
pluton exhumed by glaciers) Bridal Veil Falls
(falling over hanging valley on right), El
Capitan (left) and Half Dome (background). Scene
made famous by Ansel Adams
26
Yosemite U-shaped Valley, California (granite
pluton exhumed by glaciers) Half Dome
27
Sheet jointing in Elephant Rock granite, Missouri
28
Jointing in Elephant Rock granite, MissouriBill
Fitchen for scale
29
Joints in sandstone, Bryce Canyon, Utah (see also
Needles District of Canyonlands) Photos by Martin
LaChance at Pbase http//www.pbase.com/mlachance
/utah
30
Joints in sandstone, Bryce Canyon, Utah (see also
Needles District of Canyonlands) Photos by Martin
LaChance at Pbase http//www.pbase.com/mlachance
/utah
31
Joints in sandstone, Bryce Canyon, Utah (see also
Needles District of Canyonlands) Photos by Martin
LaChance at Pbase http//www.pbase.com/mlachance
/utah
32
To conclude Two more famous eruptions from
antiquity
  • Thera (small caldera eruption), Island of
    Santorini, Greece. Minoan age
  • Mt. Vesuvius, Italy 79 A.D. (Stratovolcano)

33
Santorini is a remnant island of the Thera
caldera eruption.
Fig. 7-42, p.174
34
Minoan-age artifacts are buried under ash exposed
in cliffs, below modern city on hilltop. Some
argue the legend of the lost city of Atlantis is
based on the Thera eruption.
Fig. 7-43, p.175
35
Fig. 7-50, p.180
36
Fig. 7-51, p.180
37
Fig. 7-52, p.181
38
Fig. 7-53, p.181
39
Fig. 7-54, p.181
40
Modern Naples built over the top of ash-buried
Herculaneum.
Fig. 7-55, p.182
41
Modern Naples in the shadow of VesuviusHave we
learned anything???
Fig. 7-56, p.183
42
Fig. 7-58, p.184
43
Roman amphitheatre excavated in Pompeiia perfect
place for a Pink Floyd concert. From the movie
Pink Floyd, Live at Pompeii, 1972
44
David Gilmour plays lead guitar in a Roman
amphitheatre excavated in Pompeii From the movie
Pink Floyd, Live at Pompeii, 1972
45
Roger Waters plays bass guitar in a Roman
amphitheatre excavated in Pompeii From the movie
Pink Floyd, Live at Pompeii, 1972
46
Fig. 7-2, p.152
47
Fig. 7-3, p.152
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Fig. 7-4, p.153
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Fig. 7-5, p.153
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Fig. 7-6, p.153
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Fig. 7-7, p.153
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Fig. 6-13, p.134
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Fig. 6-15, p.135
54
Fig. 6-16, p.135
55
Fig. 6-14, p.135
56
Fig. 7-12, p.156
57
Fig. 6-17, p.135
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