Tag: Geology
Migmatitis: what is it?
Under certain conditions of pressure and temperature, the rocks that make up the continental crust can melt. However, the rocks of the earth’s crust have very varied compositions. They are…
Protolith: what is it?
Some geological processes, such as metamorphismmetasomatism or chemical weathering, lead to the transformation of all types of rocks, designated as protoliths, into rocks of a different nature. The protolith therefore…
Granulite: what is it?
A granulite is a metamorphic rock formed under average conditions pressure and high temperature. Granulites are also used to define a facies high degree metamorphic. the metamorphism of the granulite…
Listening to earthquakes to understand the melting of permafrost
Using data collected by an earthquake monitoring site abutting Mount Zugspitze, geologists have found a correlation between melting permafrost and seismic waves. The latter would propagate less quickly when the…
Lava lakes seen by Olivier Grunewald
Windows open towards the center of the Earththe lakes of wash are fascinating phenomena. Often located at the bottom of deep craters, their dynamism is hypnotic. The regular arrival of…
How can geologists predict a volcanic eruption?
Is it possible to predict an eruption? If this is the case in the medium term, it is not yet possible to estimate the precise date. The number of parameters…
These active faults that mark out France
The French territory inherits a long and complex tectonic history. Evidenced by the many faults that incise our basement. Many are still active. To understand them and assess the seismic…
The inner core of the Earth is not really solid!
Until now considered as solid, the inner core of the Earth would actually be in an intermediate state, between solid and liquid. This is demonstrated by a new study, whose…
How can geologists anticipate an eruption?
Is it possible to predict an eruption? If this is the case in the medium term, it is not yet possible to estimate the precise date. The number of parameters…
The inner core of the Earth is not really solid!
Until now considered as solid, the inner core of the Earth would actually be in an intermediate state, between solid and liquid. This is demonstrated by a new study, whose…