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ATLANTIS & the Atlantic Ocean


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Author Topic: ATLANTIS & the Atlantic Ocean  (Read 22110 times)
dhill757
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« Reply #345 on: March 30, 2009, 12:03:32 am »



San Jorge

A Space Shuttle image with north to the upper left shows the remarkably linear island of San Jorge (Sao Jorge), which is 54 km long and only 5 km wide. The NW-SE-trending island was formed by fissure-fed eruptions. Historical eruptions in 1580 AD originated from three locations above and to the east of the coastal town of Velas, the small light-colored area along the SW coast (bottom left side), producing lava flows that reached the sea. Submarine eruptions were reported on several occasions from vents off the southern and SW coasts.

NASA Space Shuttle image ISS004-E-10891, 2002 (http://eol.jsc.nasa.gov/).


 Country: Portugal
Subregion Name: Azores and Madeira
Volcano Number: 1802-03=
Volcano Type: Fissure vent
Volcano Status: Historical
Last Known Eruption: 1907   
Summit Elevation: 1053 m 3,455 feet
Latitude: 38.65°N  38°39'0"N
Longitude: 28.08°W 28°5'0"W
The remarkably linear island of San Jorge (Sao Jorge) is 54 km long and only 5 km wide. It was formed by fissure-fed eruptions beginning in the eastern part of the island. The western two-thirds of dominantly basaltic San Jorge contains youthful, fissure-fed lava flows resembling those on neighboring Pico Island. Subaerial lava flows issued from three locations above the south-central coast during 1580, producing lava flows that reached the sea. In 1808 a series of explosions took place from vents along the south-central crest of the island; one of these fed a lava flow that also reached the southern coast. Submarine eruptions were reported on several occasions from vents off the southern and SW coasts. 
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