Metamorphic Rocks Without Wavy Layers
Metamorphic rocks that do not have wavy layers are called non-foliated rocks.
Here are some examples!
| Rock |
Picture
(click for larger image) |
Features |
How Much Metamorphism? |
| Marble |
(Courtesy USGS) |
This rock fizzes in acid because it is made mostly of calcite. You might
find little wavy cracks in it called stylolites. |
Medium to High |
| Quartzite |
(Courtesy USGS) |
Made of quartz, this rock is able to scratch glass. |
Medium to High |
Metabasalt
(also called Greenstone) |
(Courtesy USGS) |
This rock is usually non-foliated and sometimes you might find foliated
pieces of it. The mineral chlorite gives it a green color. |
Low |
Last modified August 18, 2003 by Lisa Gardiner.
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