With the information provided in this topic and any other useful information you could find on the web you must create a presentation about the volcanic activity in El Hierro related to the geological origin of the Canary Islands.
As we have already mentioned in our lessons the Canary archipelago developed at a passive continental margin, on Jurassic oceanic lithosphere and a slow-moving tectonic plate. There are several genetic hypotheses for the Canary Islands, including a propagating fracture, a local extensional ridge, uplifted tectonic blocks and an unifying model but it is generally assumed that the archipelago originated from residual old plume material in the upper mantle.
You must work in groups of four people to make your Power Point presentation taking into account that you have 2 weeks to elaborate it. Therer Therefore, on may 12h all the presentations must be given to the teachar Moisés González.
Avoid to include a large amount of text in the slides and try not to be bored. All the works will be evaluated from 1 to 10, being 10 the highest mark.
1) What is a hotspot? A volcanic "hotspot" is an area in the upper mantle from which heat rises in a plume from deep in the Earth. High heat and lower pressure at the base of the mantle facilitates melting of the rock. This melt, called magma, rises through cracks to the surface and forms volcanoes. As the tectonic plate moves over the stationary hot spot, the volcanoes are rafted away and new ones form in their place.
Earthquake report shows the latest seismic activiy at the island of El Hierro.
This year (2013) a lot of shacking reports has been described by many people around the island. The biggest danger with the earthquake was rockfall and many has been report. Many reports of strong shacking have been received from the south of La Palma island.
From strange floating rocks to collapsing cones, an underwater eruption in the islando of El Hierro in the Canary Islands last year was a rare chance for scientists to watch how volcanic islands are built.
Yesterday (21.03.2013) at 22:50 UTC an earthquake with the magnitude of 3.8 did happen in El Hierro volcano. This earthquake was felt on the Island from reports over Facebook. Since the earthquake activity has been ...
A tremor measuring 4.9 on the Richter scale has been felt by the population of El Hierro this Easter Sunday, it is the largest quake to have occurred on the island since the beginning of the volcanic eruption in 2011, according to a statement from...
A weak stain has been visible today above the submarine spot in the Las Calmas Sea south of La Restinga, and a jacuzzi occurred faint this morning at 07:30 am. Volcanic tremor seems to continue at constant, although minimal levels. This suggests that the eruption is indeed continuing. The research vessel Atlantic Explorer is currently working in the area.
An underwater volcano in the Canary Islands turned waters green as it injected a plume of gas and crushed rock across the sea surface in October 2011. (RT @NASA A submarine volcano in the Canary Islands is erupting still.
Amazing picture which was acquired by the Advanced Land Imager (ALI) aboard the Earth Observing-1 (EO-1) satellite.
Bright aquamarine water indicates high concentrations of volcanic material. Immediately above the vent, a patch of brown water resembles a turbulent hot tub and indicates when and where the eruption is strongest.Video of the eruption shows the activity in more detail.
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