EOSC 210: Sedimentary Rocks

Sediments are particulate matter derived from

• Physical weathering of the earth's crust

• Chemical weathering of the earth's crust

• Diverse organic processes

• All of the above

Lithification of sediments into sedimentary rocks occurs by

• Cementation

• Compaction

• A combination of compaction and cementation

• All of the above

Stratigraphy involves studying the layering of rocks.

• True

• False

Bedding planes are layers of strength.

• True

• False

Sedimentary rocks can provide insight into

• Earth's history

• What a dinosaur ate for breakfast millions of years ago

• Past geologic events

• Why the chicken crossed the road

Which is not a sedimentary rock type?

• Clastic

• Chemical

• Physical

• Organic

Sedimentary rocks are identified based on texture and composition.

• True

• False

Sedimentary rocks with clastic textures are described based on

• Sorting

• Rounding/sphericity

• Grain size

• Composition

Clastic textures include particles or fragments of minerals, rocks or organic matter.

• True

• False

Clastic particles are created through chemical weathering.

• True

• False