
STS109-722-91
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Zanzibar Island, Tanzania: This reef-rimmed platform formed
during rifting and ocean formation, which occurred when the
supercontinent of Pangaea broke up about 200 million years ago. The
higher flight elevation of this mission permits documentation of the
geologic setting for reef development, whereas lower flight
elevations are better for nadir reef-mapping views.
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STS109-722-90
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Pemba Island, Tanzania: Pemba is part of the same platform
complex as Zanzibar. Other rifted margins that have been colonized by
reefs include northwestern Australia around Exmouth Gulf, the Great
Barrier Reef of eastern Australia, and the Bahama Banks.
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STS109-714-69
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Puerto Rico: A rare, cloud free, synoptic view of the entire
island captured in sunglint.
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STS109-711-52
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Haiti, Dominican Republic: Rare cloud free, synoptic view of
the entire island of Hispaniola-- with the eastern tip of Cuba and
some southern Bahama islands.
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STS109-E-5404
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Santo Domingo, Dominican Republic: This early morning photo
with its oblique aspect and low light provides an excellent
3-dimensional view of the eastern end of the mountainous island of
Hispaniola. Most of the capital city of Santo Domingo is visible in
the extreme upper right corner of the scene.
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STS109-719-84
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Turks and Caicos Islands, SE Bahama Bank and Great Inagua
Island: The Turks and Caicos (U.K.) are in the southern Bahamas
chain, part of the shallow marine platform that was created when
Africa and South America rifted away from North America to form the
Atlantic.
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STS109-714-62
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Great Inagua Island, Bahamas
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STS109-714-63
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Turks and Caicos Islands, detail: Light streaks and patches of
carbonate sand (shell particles, grains of limestone) are seen on the
shallow platform (turquoise) where waters are a few meters deep. On
the north side of the islands, surf is breaking on the barrier reef.
Just south of the coast of N. Caicos Island is a blue hole, formed by
submarine dissolution of the limestone platform.
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STS109-718-102
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Galapagos Islands: Equatorial E. Pacific. Seahorse-shaped
Isabella and more rounded Fernandina are volcanic islands generated
by a mantle hotspot offshore from Ecuador. The hotspot rises at the
junction of the Cocos oceanic plate on the north and the Nazca plate
on the south and east. Volcanic craters on Isabella are aligned along
a north-trending fault of the plate boundary system.
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STS109-716-181
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Galapagos Islands: In sunglint. Deflection of currents around
the islands and trains of internal waves are beautifully revealed in
the sunglint.
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