El Jorullo

El Jorullo is a cinder cone volcano in Michoacán, central Mexico, on the SW slope of the central plateau, 33 mi/53 km SE of Uruapan (also know to be located in an area known as the Michoacan-Guanajuato volcanic field). El Jorullo has four smaller cinder cones which have grown from it. The vents of El Jorullo are aligned in a northeast to southwest direction. Lava from these vents cover nine square km around the volcano. Later eruptions produced lavas that had higher silica contents making them thicker than the earlier basalts and basaltic andesites lavas. El Jorullo's crater is about 1,300 by 1,640 ft (400 by 500 m) wide and 490 ft (150 m) deep.