Weathering & Sedimentary Rocks

Which process most likely formed a layer of the sedimentary rock, gypsum?

• precipitation from seawater

• solidification of magma

• folding of clay-sized particles

• melting of sand-sized particles

What are the rock name and map symbol used to represent the sedimentary rock that has a grain size of 0.006 to 0.2 centimeters?

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Which mineral precipitates from oceans and forms rock salt?

• quartz

• fluorite

• halite

• olivine

Rocks that form from fragmental rock particles are classified as

• extrusive igneous

• intrusive igneous

• clastic sedimentary

• chemical sedimentary

Which two processes lead directly to the formation of both breccia and conglomerate?

• melting and solidification

• heat and pressure

• compaction and cementation

• evaporation and precipitation

Which rock was organically formed and sometimes contains fossilized plant impressions?

• rock gypsum

• phyllite

• breccia

• coal

Which phrase best describes coal?

• low density, mafic

• chemical precipitate

• organic plant remains

• glassy texture, volcanic

Which table shows the rocks correctly classified by texture?

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Because sedimentary rocks form without any heat they are the only type of rock to contain fossils.

• true

• false

Which symbol represents the sedimentary rock with the smallest grain size?

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