Sedimentary/Metamorphic Rocks Quiz

What are metamorphic rocks primarily changed in?

• Their chemical composition only

• Their solid state

• Their location in the earth's crust

• Their fossil content

Rocks that form from the precipitation of dissolved minerals are:

• detrital rocks

• silliciclastic rocks

• chemical rocks

Carbonates form where there is no input of terrigenous (detrital) sediment.

• true

• false

Calcarenite has which size fragments of carbonate materials?

• sand

• gravel

• mud

Ironstones are known for their red bands.  What is the "waste product" from living processes that cause it to have red coloration?

• silicon

• carbon

• oxygen

• formation of amino acids

What environments are often associated with the production of peat and coal?

• steam channel

• desert

• coral reef

• swamp

Which sandstone is enriched in rock fragments?

• lithic sandstone (aka graywacke)

• arkose

• mudstone

• quartz sandstone

Which grain size is found in arenite terrigenous rocks?

• sand

• silt/clay

• gravel

Which of the following rocks would indicate a moderate-energy stream or desert environment, relatively far from the sediment source?

• slitstone

• shale

• breccia

• sandstone

What is a well sorted sediment?

• sediment that is all the same size

• sediment that is all the same type of mineral

• sediment that is all the same shape