STS-109 Earth Sciences and Image Analysis Debriefing with Crewmembers
April 9, 2002

GEOLOGY & GEOMORPHOLOGY
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View larger image for STS109-724-18
STS109-724-18
Hawaiian Islands, Hawaii: The volcanoes Kilauea and Mauna Loa on Hawaii reflect the activity at depth of a mantle hotspot, a topographically high region of extreme heat on the surface of the Earth's mantle. Loihi, southeast of the Big Island, is growing and evidence of subsea eruptions can sometimes be seen in the surrounding waters.
View larger image for STS109-724-21
STS109-724-21
Hawaiian Islands, Maui: Dormant volcano Haleakala, Lanai, Molokai, Kahoolawe. These islands formed earlier over the Hawaiian hotspot and have subsided somewhat; the Pacific plate has since moved northwestward, and the hotspot is now feeding magma to the islands of Hawaii.
View larger image for STS109-323-18
STS109-323-18
Popocatepetl and Ixtaccihuatl: Volcanoes, central Mexican Volcanic Belt, in dawn light. Popocatepetl continues to spout ash and gas, although it was quiet when this detailed photo was taken. This photo and STS 109-323-20 are an excellent stereopair.
View larger image for STS109-323-27
STS109-323-27
Popocatepetl and Ixtaccihuatl: Volcanoes, central Mexican Volcanic Belt, regional view to west.
View larger image for STS109-708-79
STS109-708-79
NW Colombia, Venezuela: Rare view of the Sierra Nevada de Santa Marta (dark, shield-shaped mountains) west of the Gulf of Venezuela, the Guajira and the Paraguaná peninsulas. Panoramic view of the Cordillera Oriental, Colombian Andes (foreground) an area that is almost always obscured by clouds. Cordillera de Mérida is the distant ENE-trending range that lies south of Lake Maracaibo. Santa Marta massif and the Cordillera Oriental are blocks of billion-year-old crust that have been forced up as the Nazca tectonic plate (part of the Pacific) collides with South America.
View larger image for STS109-712-66
STS109-712-66
Maracaibo, Venezuela: The city of Maracaibo occupies the west bank of the strait connecting Lake Maracaibo with the Gulf of Venezuela.
View larger image for STS109-712-73
STS109-712-73
Venezuela: Paraguaná Peninsula, Golfete de Coro (angular patch of muddy water). The Golfete de Coro is cross-cut by faults of the Caribbean plate boundary system, hence the sharp, straight shorelines. South of the gulf, details of other faults and structures are clearly seen.
View larger image for STS109-720-75
STS109-720-75
Colombia, Cordillera Oriental detail: Possibly the only photo of this span of the Andes -- always cloud-covered. The Cordillera is another block of ancient continental crust that has been forced up during the Nazca-S. American plate collision. Lago Tota is near center.
View larger image for STS109-724-10
STS109-724-10
Venezuela: Llanos plains fans (compare STS109-729-89); Lake Maracaibo in background.
View larger image for STS109-729-89
STS109-729-89
Argentina: High desert plains ("altiplano") of the Andes Mts, and Chaco plains-panorama looking south.
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