Sharon+Volcano

Instituto Geográfico Nacional (IGN) reported more than 900 seismic events at Hierro island during 8-19 September, three of them felt by residents. The total number of located earthquakes had reached more than 7,200 since anomalous activity began on 16 July, with patterns alternating between relatively calm and high-energy periods. The GPS local network showed similar deformation rates compared to previous weeks.

2012/4/26/TH/ The triangular of Hierro is the SW least information of the Canary Islands. The huge Hierro shield the volcano is be smaller by a large NW-facing escarpment formed effect the result of gravitational collapse of EL Golfo volcano about 130000 years ago. Cliffy Mountain has 1500mile high, is above lave platform bordering 12 km wide El Golfo Bay, and 3 other massive submarine landslide deposits occur to the SW and SE. Three obvious rifts lead NW, NE, and south at 120 degree, most volcano are continents organize, is smooth and trachybasaltic lava flows and tuffs capped by numerous young cinder cones and lava flows. Holocane cones and flows were found both on the outer flanks and also in The El Golfo depression. Hierro contains has greatest concentration of young vents in Canary Island, but we are not sure the surrounds report from 1793 when it eruped.