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Geology Assignment Help

METAMORPHIC ROCKS

  1. Watch the following Youtube video in full:

    Use your textbook or internet to answer the following questions:
    1. First write a summary about the video!
      (It should contain parts from the beginning, middle, and end of the video – 250 words)
    2. Find the image of the following rocks Slate, Phyllite, Schist, and Gneiss in your textbook or any scientific viable internet source (a good link is https://geology.com) and insert the images in corresponding field.

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Texture Grain Size Characteristics Grade of Metamorphism
(low-intermediate-high)
Rock
Name
Foliated
Slaty
Slate
Foliated
Phyllitic
Phyllite
Foliated
Schistose
Schist
Foliated
Gneissic
Gneiss
Non-foliated Quartzite
Non-foliated Marble
Texture Grain Size Characteristics Name
FOLIATED Very Fine Dull Luster
Hard Flat Sheets
High Frequency “Ping”
SLATE
Fine Wrinkled or Wavy Layers
Metallic Luster
Few Larger Crystals
PHYLLITE
Medium to Coarse Visible Sparkling Platy Minerals (Micas) SCHIST
Medium to Coarse Alternating Bands of Light and Dark GNEISS
NON-FOLIATED Fine to Medium Calcite (Fizz with HCl)
Hardness = 3
MARBLE
Fine to Medium Quartz
Hardness = 7
META-QUARTZITE

The foliation shows the intensity or grade of metamorphism (the amount of heat and pressure the rocks were exposed to). The image below shows how shale or slate would change at different grade of metamorphism. Geology Assignment Help.

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