Central American Field Trip                 Back to Home Page
       This trip complements a lecture on Central American volcanoes in 460:201 Earthquakes and Volcanoes

Volcanoes

Topics

Santiaguito, an erupting volcanic dome

 Strombolian eruptions   Pacaya, Arenal

Atitlán-Toliman, caldera

Vulcanian eruptions
Fuego, Plinian eruptions

Plinian eruptions Fuego 1974
Pacaya, Strombolian activity since 1963

Pelean eruptions   Fuego 1974
Back-arc volcanism, cinder cones, shields, etc

Gas eruption   Masaya
Santa Ana & Izalco, the failed hotel

Lava flows   Aa at  Pacaya, block  at Arenal)
Boqueron, "big mouth"

fumaroles
Conchagua, a quiet volcano

crater lakes: Santa Ana, Poás
Cosigüina, 1835 eruption and cooling Calderas: Atitlán, Coatepeque, Cosigüina
Cerro Negro, erupts after earthquakes
Momtombo, geothermal power
Masaya, gas eruptions
Arenal, 1968-present lava field
Poás, a national park and shield
Irazú, '63-'65 eruption and lahar

 

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Pacaya volcano erupting in 1969 with Fuego (back center)  and Agua (back rhs) behind