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Basalt pillow lava from Galápagos Spreading Center.

Basalt pillow lava from Galápagos Spreading Center.
Basalt pillow lava from Galápagos Spreading Center.
Basalt pillow lava from Galápagos Spreading Center.
Basalt pillow lava from Galápagos Spreading Center.
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596752
Shank, Timothy and Alvin team
Basalt pillow lava from Galápagos Spreading Center.
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06/01/2003
pillow lava for cover_C.tif
Caption from Oceanus magazine, Vol. 42, No. 2, front and back cover:
A striated tongue of basalt lava—extruded from the seafloor like toothpaste from a tube—lies atop older lava at the Galápagos Spreading Center 1,668 meters (5,463 feet) below the surface of the Pacific Ocean. In 2002, scientists diving in Alvin discovered an extensive community of giant clams up to 1 foot long (Calpytogena magnifica) thriving on low temperature hydrothermal fluids venting from cracks in seafloor lava. (With grateful acknowledgement to David Metz of Canon, Inc.-USA and George Moss for the loan of a Canon EOS 1D digital camera system used in Alvin to take these high-resolution photographs).
Courtesy of Tim Shank
© Woods Hole Oceanographic Institution
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