Tag: igneous rock
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.…
Volcano: what is the difference between lava and magma?
Lava and magma are two terms relating to volcanism that we sometimes tend to use interchangeably. However, both refer to different materials. You will also be interested [EN VIDÉO] How…
Protrusion: what is it?
In geology, a protrusion represents a construction volcanic domed or needle typical of Pelean volcanism. This type of volcanism refers to Mount Pelée in Martinique, and is characterized by very…
Perseverance rolls over igneous rocks and discovered organic matter
Astronomers believed them to be sedimentary, but new data returned to Earth by the NASA Perseverance rover shows that the rocks it has been rolling on since arriving on Mars…
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…
This map betrays the magnetic signatures of the telluric forces that shaped the Earth
The map of the Earth’s magnetic field has been enriched with a new model making it possible to better understand the thermal state of the Earth’s crust, to perceive the…