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El Chichòn Volcano, Southern Mexico
Active volcano, ash deposits

Significance: The first historic eruption of El Chichòn (located near the Tabasco oil fields) started on March 29, 1982, and created a massive ash cloud with a global atmospheric aerosol layer at an altitude of 20-40 km which persisted through 1985. Some of the ash fell on Texas and Louisiana.

A series of photos over the next few years will help documents revegetation of the devastated area. 

Physical Characteristics: This previously inconspicuous volcano now has an enlarged crater or caldera. Massive ash deposits blanketed the area and slowed tens of kilometers down local valleys. The light-colored ash deposit is widespread and similar to that  of Mount St. Helens 1980 eruption.

Lake Malpaso is situated just south and west of the volcano. The Grijalva River flows northward toward the Gulf of Mexico just west of the volcano. 

Observation Techniques: Use a 250 mm lends to take near near-vertical or low oblique stereo views of El Chichòn and its ash flows.

[[1 image]]

Center Point: 17.4°N, 93.3°W
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Transcription Notes:
[[image: geographical map of the surrounding areas of the volcano]]