Shale vs Slate
Hahaha!! Okay. For school, there is this project that we
have to do, that we need to write a poem about Shale/Slate. I have no
idea what to write because I have no idea what Shale/Slate is!!! I
dislike my teacher greatly for this project that she gave us no time
for. What info can I use for a poem about Shale/Slate?
Shale is a clastic sedimentary rock composed of silt and clay grains. It
is usually rather soft and brittle. Most shale is impermeable which means
it doesn't allow water to move through it.
Slate is a metamorphic rock. It used to be shale but it has changed due to
metamorphic activity like heat and pressure. Slate is usually very strong
and impermeable. It is used in billard/pool tables, as floor tile, as
roofing shingles, and traditionally as blackboards/chalkboards.
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Update: June 2012