Calcareous Ooze Quiz

Identify which substances calcareous ooze is composed of

• Calcite

• Carbonate

• Aragonite

• Hydrogen

Which of the following organisms DO NOT contribute to calcareous ooze:

• Foraminifera

• Corals

• Pteropods

• Coccolithophores

What factor DOES NOT promote accumulation of carbonate sediment?

• Pressure

• Concentration of Ca and CO₃

• Temperature

• Salinity

Identify which statement is TRUE

• Carbonate is most variable and is the main control on saturation state

• Adding CO₂ increases the pH

• Ca is variable because calcium has a short residence time

• Decreasing pH, decreasing temperature and decreasing pressure decrease saturation state

The lysocline is:

• The depth at which calcite and the ocean are in equilibrium

• The depth at which calcite becomes oversaturated

• The depth at which calcite becomes undersaturated

• The depth at which pressure and temperature alter pH

Identify which statement is FALSE

• Sediments below the lysocline contain calcite

• Less carbonate is provided to deeper regions than shallower regions

• Sediments below the lysocline contain less calcite than above

• Rates of dissociation increase with depth

Identify which statement is true of CCD:

• CaCO₃ accumulates below the CCD

• Is always located below the lysocline

• Occurs at a constant depth

• Is shallower than the aragonite compensation depth