MAP SHOWING PLATE BOUNDARIES

The topography of the Atlantic Ocean bottom is shown as if the ocean had been removed. The blue lines indicate the edges of the ocean tectonic plates. The yellow dots indicate locations of earthquakes that have occurred in the period 1960 to 1985. The red triangles are the locations of volcanic eruptions that have occurred in the period 1980 to 1995. Both the earthquakes and the volcanic eruptions follow the plate boundaries.

Sources:
Earthquake data was supplied by the U.S. Geological Survey, (National Earthquake Information Center)
Topographic data was also supplied by the U.S. Geological Survey, (Digital Elevation Mapping project).
Volcanic data were supplied by the Smithsonian Institution's Global Volcanism Program.
Plate boundary data were supplied by the U.S. Naval Research Laboratory.
image from: NASA Goddard Splace Flight Center

There is also the TOMS web site that includes information about volcano plums. The web address is: http://skye.gsfc.nasa.gov .



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