Tag: Geology
When glaciers covered Namibia
If the word “fjord” immediately makes us think of Norway, a team of geologists has just found traces of these great valleys carved by glaciers in a completely different region…
Fractional crystallization: what is it?
The magmatic rocks that make up the majority of the Earth’s crust come from the crystallization of liquids magmatic, at the surface or at depth. Surface crystallization leads to the…
Accretion prism: what is it?
A prism ofaccretion represents a structure of tectonic origin linked to the accumulation of sediments at the level of a subduction. Scaling and sediment build-up In subduction zones, the oceanic…
The minerals of the world in 19 photos
Main constituents of rocks, minerals are substances that have a chemical composition and properties physical well defined. They are formed during the different stages of the life of the planets:…
Fjords in Namibia: when glaciers covered this now arid part of the world
If the word “fjord” immediately makes us think of Norway, a team of geologists has just found traces of these great valleys carved by glaciers in a completely different region…
The enigmatic formation of the first continental crust
The continental crust which forms the continents that we know today was formed during the first stages of the Earth’s evolution, in the Hadean style. During this period, the early…
How a continent opened up influences the location of future subduction zones
A new study provides a better understanding of where and how subduction zones are initiated, a major stage in the Wilson cycle. It appears that the tectonic and magmatic heritage…
How does a mud volcano work?
When we hear the word “volcano” we usually think of lava and magma. But there is another type of volcanism, which can be just as devastating. These are the mud…
How were the Pyrenees formed?
Along with the Alps, the Pyrenees represent the second chain of collision marking the French landscape. The formation of this great mountain range results from a complex and polyphase tectonic…
World’s first underground magma observatory to dig towards the center of the Earth
The Krafla (Iceland) was already an exceptionally beautiful volcanic system. And a region rich in geothermal resources. Which is now also preparing to become a unique scientific research site in…