ABOUT HEKLA
Hekla is a stratovolcano located in the south of Iceland with a height of 1,491 metres (4,892 ft). Hekla is one of Iceland’s most active volcanoes; over 20 eruptions have occurred in and around the volcano since 874. During the Middle Ages, Icelanders called the volcano the “Gateway to Hell.”
According to the Institute of Earth Sciences, Iceland’s most famous volcano is built up on a WSW-ENE trending fissure by repeated fissure eruptions, forming a vaulted ridge about 5 km long and split lengthwise in major eruptions.
“Hekla has had a number of large postglacial eruptions, producing vast amounts of tephra which repeatedly covered up to two thirds of the country with light-coloured tephra (i.e. 7000 B.P., 4500 B.P., 2900 B.P., A.D. 1104 and A.D. 1158). During historical time the first eruption (A.D. 1104) was a tremendous explosive eruption which destroyed the Þjórsárdalur valley. This eruption produced about 2.5 km3 of rhyodacitic tephra, which was carried towards NNW. The following eruptions in Hekla, producing both lava and tephra, occurred in 1158, 1206, 1222, 1300, 1341, 1389, 1510, 1597, 1636, 1693, 1766, 1845, 1947, 1970, 1980, 1991 and 2000. Some of these eruptions caused great damage, especially the eruptions in 1510, 1693 and 1766.”
More info on Hekla....
"Pay Attention",
Bobby Sharpe
No comments:
Post a Comment