Metamorphic Rock Identification Concepts

The video tutorial explains the metamorphic rock identification scheme, highlighting similarities with the sedimentary rock scheme. It covers texture types (foliated and non-foliated), grain size, composition, and types of metamorphism (regional and contact). The tutorial also discusses how to interpret comments and rock names in the table, and provides guidance on using the table to analyze rocks like quartzite. The video concludes with an invitation for questions and feedback.

What is a new column introduced in the metamorphic rock identification scheme that is not present in the sedimentary rock scheme?

• Rock Name

• Type of Metamorphism

• Grain Size

• Texture

What causes the foliated texture in metamorphic rocks?

• Cooling of magma

• Increasing pressure

• Erosion by water

• Chemical reactions

Which of the following is NOT a characteristic of non-foliated rocks?

• Random mineral alignment

• Presence of banding

• Uniform texture

• Lack of visible pattern

How should the composition of foliated rocks be read in the identification table?

• Diagonally

• Vertically

• In a circular pattern

• Horizontally

Which mineral is NOT found in schist according to the composition column?

• Pyroxene

• Garnet

• Amphibole

• Calcite

What is the primary factor in regional metamorphism?

• Wind

• Water

• Pressure

• Heat

Contact metamorphism occurs when rocks come into contact with what?

• Water

• Air

• Magma or lava

• Other rocks

What is the original rock from which quartzite forms?

• Shale

• Granite

• Limestone

• Quartz sandstone

Which rock is solely formed through contact metamorphism?

• Anthracite coal

• Hornfels

• Marble

• Slate

Where should you look to find out what the original rock was before metamorphism?

• Grain size column

• Map symbol

• Texture column

• Comments section