Sedimentary Rock Review

What is true of conglomerate? (Pick 3)

• It is a clastic texture.

• It has rounded fragments

• It is organic.

• It has differenent grain sizes.

What is the size of a sand grain?

• less than .0004 cm

• .006- 0.2 cm

• .0004- .006 cm

• 26.6 cm

What is the mineral composition of limestone -that also bubbles in acid?

• Quartz

• Calcite

• Feldspar

• Mica

Tags

NGSS.MS-PS1-2

What is the size of a clay fragment?

• less than .0004 cm

• .006- 0.2 cm

• .0004- .006 cm

• 10 cm

What is a bioclastic rock is made of carbon?

• breccia

• shale

• rock salt

• bituminous coal

What is the size of a silt grain?

• less than .0004 cm

• .006- 0.2 cm

• .0004- .006 cm

• 10 cm

Pick 3 chemical crystalline rocks that from by precipitation and evaporation.

• Rock salt

• Obsidian

• Rock Gypsum

• Dolostone

Tags

NGSS.MS-ESS2-4

What is the mineral that forms dolstone?

• calcite

• gypsum

• dolomite

• carbon

Limestone is only formed as a crystalline rock.

• True

• False

What is the mineral composition of all clastic rocks? (Pick all that apply)

• Quartz

• Feldspar

• Clay minerals

• Clastic rocks are monomineralic

  (one mineral only)