
STS092-701-27
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Mendoza, Argentina sustained extensive damage in 1861 from an
earthquake on a buried fault that passes beneath the city. The low
hills south of town mark an area where the ground surface is arched
over the tip of the fault.
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STS092-701-39
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San Juan, Argentina was leveled by an earthquake in 1944; the main
earthquake-producing fault lies west of the town. Secondary faults to
the north and east of the city also moved at that time and compounded
the damage.
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STS092-701-84
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Snow-covered Southern Alps, South Island, New Zealand. The straight,
active segment of the Alpine Fault Zone marks the western edge of the
Southern Alps. Mount Cook marks the beginning of a series of
SE-trending fault splays; bright blue Lake Pukaki occupies one of
these fault valleys.
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STS092-711-18
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The Australian and Pacific tectonic plates converge along the Alpine
Fault Zone, producing the Southern Alps; the northwest side is also
moving northeast relative to the opposite side. Red Hill has been
split and the remainder is now ~480 km to the south; linear fault
splays such as the Wairau are also active strike-slip faults (3-10
mm/yr offset).
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STS092-710-56
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Near Lake Wakatipu, on the east side of the southern Alpine fault
zone, is the offset portion of the Red Hill block.
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STS092-703-77
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In contrast with South Island, the crust of North Island is being
stretched and lava reaches the surface at aligned active volcanoes
such as Ruapehu and Tongariro; White Island (with plume) is the
northernmost subaerial volcano of the line and Lake Taupo is a
volcanic crater lake. Volcanic heat is harnessed to generate power.
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STS092-711-21
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The Alpine fault zone splays out to the northeast, and the plate
boundary changes style and direction at Cook Strait. The city of
Wellington and the active Wellington fault (northeast) are near the
node where the Alpine fault system ends and the Hikurangi Trench
system begins.
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STS092-713-48
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Tongariro National Park (dark vegetated areas surrounding the peaks)
includes the active volcano Ruapehu and the dormant Tongariro. In the
1995 eruption, acid waters from the crater lake were blown out of the
crater over the surrounding countryside.
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STS092-711-11
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No longer a volcanic threat, Banks Peninsula is a deeply eroded old
volcano ~24 million years old; the crater now provides a deep-water
harbor for Christchurch.
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STS092-309-6
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Mt. Egmont, on North Island, is another old volcano (~24 Ma). The
vegetated dark cone of the volcano, within a national park, contrasts
sharply with the surrounding cleared and cultivated land.
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