Where do the volcanic materials of Hekla volcano come from?

Question

I also need to know if Hekla's volcanic materials come from central vent and cone, fissure eruptions, or from flank eruption?

Answer 1

http://en.wikipedia.org/wiki/Hekla
Hekla is part of a volcanic ridge, 40 km (25 mi) long. However, the most active part of this ridge, about 5.5 km (3.4 mi) long, is considered to be the volcano Hekla proper. It is a series of craters, two of which are generally the most active.

http://www.decadevolcano.net/volcanoes/iceland/hekla.htm
Hekla can be described as an intermediate volcanic form between a crater row and a stratovolcano. The 2000 eruptions were from a 6-7 km long fissure.

http://www.nat.is/travelguideeng/plofin_mt_hekla.htm
But not all past eruptions have been from single fissures. During a major eruption in 1693, 14 craters were active simultaneously. This eruption devastated 50 farms for a while. Still another major eruption in 1766, which lasted two years with intervals, showed 18 craters active at the same time.

Answer 2

On 26 February, Iceland's maximum properly-enjoyed volcano, Mt. Hekla, began erupting at 1819 GMT. The seismic networks of the technology Institute, college of Iceland and the Iceland Meteorological workplace recorded a quick-term precursory earthquake activity. A seismograph close to the summit of Hekla beginning up at 1700 detected small earthquakes. The national Civil protection of Iceland issued a warning, and the prevalent public replaced into alerted. Thunder, lightening, and earth tremors accompanied the eruption. A 6-7 km long fissure appeared and a steam column rose almost 15 km (40 5,000 ft) into the sky. A discontinuous curtain of hearth emanated from the finished fissure. The lava flows down the slopes of Hekla and covers a extensive area of the Hekla ridge. One lava bypass flowed from the eruptive fissure in direction of the north. A greater lively lava bypass emanates from 3 craters close to the southern end of the eruptive fissure. On February 27, this lava bypass replaced into quite a few kilometers long and replaced into advancing at a value of a pair of meter in line with minute. The Coast safeguard mentioned that the hot lava covers a stretch of approximately 3-4 km at its longest. the optimal thickness of the ash sector, 21 km north of the volcano, replaced into 4-5 cm while measured 7 hours after the onset of the eruption. lots of the ash fell in uninhabited factors interior the interior Iceland. The eruption reached its height intensity interior the 1st hour of the activity. on the instant, the lava flows and ash fall pose little possibility to human settlement. Geologists mentioned the activity ought to proceed for a pair of month. Icelanders interior the midsection an prolonged time referred to as the volcano the "Gateway to Hell."