Lisbeth Schineller

Lisbeth Schineller

10
Followers
75
Following
Lisbeth Schineller
More ideas from Lisbeth
Serpentina

Serpentina

Schist is a medium to fine grained foliated metamorphic rock.  Flat minerals, such as mica, produce the foliation.   The mica crystals in mica schist produce a sparkly appearance.

Schist is a medium to fine grained foliated metamorphic rock. Flat minerals, such as mica, produce the foliation. The mica crystals in mica schist produce a sparkly appearance.

Muscovite schist (3.3 cm across at its widest)  Metamorphic rocks result from intense alteration of any previously existing rocks by heat and/or pressure and/or chemical change.  This can happen as a result of regional metamorphism (large-scale tectonic events, such as continental collision or subduction), burial metamorphism (super-deep burial), contact metamorphism (by the heat & chemicals from nearby magma or lava), hydrothermal metamorphism (by superheated groundwater), shear…

Muscovite schist cm across at its widest) Metamorphic rocks result from intense alteration of any previously existing rocks by heat and/or pressure and/or chemical change.