Exempel på schist

• A method for calculating effective bulk composition modification due to crystal fractionation in garnet-bearing schist: implications for isopleth thermobarometry.

• The lower part of the formation is often metamorphosed and deformed into strongly magnetic mica schists.

• The magnetization in the schist and the sandstone is interpreted to be a chemical remanant magnetization caused by the same fluids that precipitated the veins.

• Metasedimentary samples from the southeastern portion are represented by graphite schist and metapelite.

• The most common type is garnet-biotite schist consisting of biotite, garnet, feldspar and accessory zircon.

• The schist is composed mainly of biotite, plagioclase and quartz, whereas granulitite consists mainly of quartz, plagioclase and biotite.

• In schist intercalations within the marbles mineral assemblages include chlorite, calcite, albite, phengite and quartz.

• The soils are well drained and derived from schist.

• The magnetization in the veins, schist and sandstones is interpreted to have been acquired when the haematite was precipitated.

• These zones show the effects of intense alteration: the granite is transformed into a quartz-sericite-andalusite schist.

• The contact between granite and schist is intrusive, generally cross-cutting a pre-existing schistosity.

• The schists are dark bluish grey, fine-grained with a high quartz content (> 60 vol. %) and possess a continuous schistosity.

• In some places it is possible to confuse schist boulders with schist basement.