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Galapagos Rift
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Voyage
Ocean Exploration
Modern Expeditions
OER
Galapagos Rift Expedition 2011
Ocean Exploration
Note the white faces on the rock in the right center of the image. Thisapparently once continuous tube-like lava flow appears to have been pulled apart as this rift formed. Ocular proof of plate tectonics in action. A mini-version of the fit betwee
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.jpg
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Pillow lavas with light sediment cover. Two red shrimp are seen in the lefthalf of the image.
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(1.68 MB)
Cracked pillow lavas with hydrothermal alteration of the rock faces. Twored shrimp appear to be acting in concert in lower center of image.
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.jpg
(1.71 MB)
Diffuse venting areas, such as this one found on an early dive, host uniquemicrobial communities fueled by nutrients contained in the escaping hydrothermal fluids.
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.jpg
(1.38 MB)
Diffuse venting areas, such as this one found on an early dive, host uniquemicrobial communities fueled by nutrients contained in the escaping hydrothermal fluids.
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.jpg
(1.38 MB)
Diffuse venting areas, such as this one found on an early dive, host uniquemicrobial communities fueled by nutrients contained in the escaping hydrothermal fluids.
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.jpg
(1.48 MB)
A recent lava flow showing white microbial staining on the broken basaltic rocks, caused by discharge of warm hydrothermal fluids through the seafloor. Thedischarge is still occurring at this location as evidenced by the shimmeringaspect of the water
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.jpg
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Hydrothermal mineral laden fluids give a smoky appearance to the watersnear a hydrothermal vent. The sea floor can barely be perceived below with awhite vent crab seen in lower center of image and white microbial coveredpillow lava structures seen as
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.jpg
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Classic pillow lavas in foreground with hydrothermally altered material inbackground.
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.jpg
(1.41 MB)
Hydrothermally altered and shattered pillow lavas. A large red shrimp is incenter of one shattered pillow structure.
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.jpg
(1.51 MB)
A deep crevasse probably marking proximity to the locus of seafloorspreading.
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(1.33 MB)
An extinct hydrothermal spire probably composed of sulfide minerals spewedfrom a black smoker.
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(1.41 MB)
Closeup of the surface of an extinct hydrothermal spire probably composed ofvarious sulfide minerals. Note white brittle star on this spire, a type offauna hardly ever noted in proximity to active venting.
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.jpg
(1.65 MB)
Pillow lavas at the edge of crevasse near the locus of active spreading.
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.jpg
(1.36 MB)
An oddly broken lava slab showing cooling zones of lava and pink and whitealteration.
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.jpg
(1.43 MB)
A recent pillow lava flow with biological material resting between the pillows,indicating where low-temperature hydrothermal fluid has been leakingout of the crust.
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.jpg
(1.53 MB)
A field of extinct sulfide chimneys, several meters high,rise above the surrounding seafloor. The pink staining is a combinationof biological and chemical processes.
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.jpg
(1.22 MB)
A field of extinct sulfide chimneys, several meters high,rise above the surrounding seafloor. The pink staining is a combinationof biological and chemical processes.
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.jpg
(1.23 MB)
A field of extinct sulfide chimneys, several meters high,rise above the surrounding seafloor. The pink staining is a combinationof biological and chemical processes.
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.jpg
(1.22 MB)
A field of extinct sulfide chimneys, several meters high,rise above the surrounding seafloor. The pink staining is a combinationof biological and chemical processes.
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.jpg
(1.01 MB)
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