[Answer] Which list properly orders foliated metamorphic rocks from lowest to highest grade from left to right?

Answer: slate phyllite schist and gneiss
Which list properly orders foliated metamorphic rocks from lowest to highest grade from left to right?

Foliation in geology refers to repetitive layering in metamorphic rocks. Each layer can be as thin as a sheet of paper or over a meter in thickness. The word comes from the Latin folium meaning “leaf” and refers to the sheet-like planar structure. It is caused by shearing forces (pressures pushing different sections of the rock in different directions) or differential pressure(higher pressure from one direction than in others). The layers form parallel to the direction of the shear or perpendicular to the direction of high…

Metamorphic rocks are characterized by their distinctive mineral composition and texture. Because every mineral is stable only within certain limits the presence of certain minerals in metamorphic rocks indicates the approximate temperatures and pressures at which the rock underwent metamorphosis. These minerals are known as index minerals. Examples include sillimanite kyanite staurolite andalusite and some garnet.

Wed Sep 07 2005 14:30:00 GMT-0400 (Eastern Daylight Time) · Greenschists are metamorphic rocks that formed under the lowest temperatures and pressures usually produced by regional metamorphism typically 300–450 °C (570–840 °F) and 2–10 kilobars (14 500–58 000 psi). Greenschists commonly have an abundance of green minerals such as chlorite serpentine and epidote and platy minerals such as muscovite and platy serpentine.

Foliation (geology) – Wikipedia

Anthracite – Wikipedia

Foliation (geology) – Wikipedia

Foliation (geology) – Wikipedia

A metamorphic facies is a set of mineral assemblages in metamorphic rocks formed under similar pressures and temperatures. The assemblage is typical of what is formed in conditions corresponding to an area on the two dimensional graph of temperature vs. pressure (See diagram in Figure 1). Rocks which contain certain minerals can therefore b…

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