Tag: magma
A volcanic eruption in Iceland can continue for months – a fissure volcano spews magma and fire more slowly than traditional-looking volcanoes | Science
The main concern is for the nearby town of Grindavík, which is a few kilometers from the eruption site. The volcano currently erupting in Iceland is not likely to cause…
Iceland worried after discovery of magma fissure in Grindavik
In Iceland, the Fagradalsfjall volcano is once again shaking the earth and threatening to erupt in Grindavik, a town located 40 km southwest of the capital Reykjavik. The island declared…
Magma approaches Icelandic coastal town
Share the article Save the article full screen Hundreds of earthquakes have hit the Reykjanes peninsula and the coastal town of Grindavik and, among other things, damaged roads. Photo: Agnar…
Magma stream threatens coastal town in Iceland
Several strong earthquakes have struck the Reykjanes peninsula and the activity suggests an intrusion of magma beneath the city, Iceland’s meteorological institute said just before midnight. “In light of this,…
Passive continental margin: what is it?
“Continental margin” is the term used to define the transition zone between a continental crust and an oceanic crust. There are two types of continental margins: the active margin and…
What is the composition of the oceanic crust?
The oceanic crust is one of the two components of the earth’s crust. Very different from continental crust, it is continuously formed at mid-ocean ridges. However, its composition is very…
Dike: what is it?
Dykes are intrusions of igneous rocks within the Earth’s crust. Unlike the plutos, which form massive sets, the dykes are in the form of veins which cut the rocks of…
Sill: what is it?
Sills are intrusions of igneous rocks within the Earth’s crust. Of tabular geometry, they are in the form of let’s go horizontal, which insinuate themselves between older surrounding sedimentary layers.…
Pozzolan: what is it?
Pozzolan is a rock of volcanic origin, friable and not very dense, of composition essentially basalt. The term comes from Pozzuoli, an Italian city in the region of Naples where…
Volcanic eruptions are partly controlled by the amount of water present in the magma
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