Exam 7: Sedimentary Rocks

Graded bedding will display particles that are fine near the bottom of the layer and get progressively coarser toward the top.

Volcanic activity in the early history of the Earth is believed to be responsible for much of the CO₂ found in the atmosphere.

Which of the following makes up the sediment that forms an organic sedimentary rock?

Chalk is a soft, porous rock composed of the hard parts of microscopic marine organisms.

What is the most common sedimentary rock?

The Grinnell Formation in Glacier National Park contains mudcracks that date back nearly 1.5 billion years.How can delicate sedimentary structures such as these be preserved?

Due to their size, stream gravels need a swift current to be transported, whereas sands need a current with less energy.

What sediment particle size(s)make up shale?

What are the three categories of sedimentary rocks?

Which of the following rocks composed of silt- and clay- sized particles displays fissility?

A ________ marks the end of one episode of sedimentation and the beginning of another.

Compare and contrast how the formation of biochemical sediments differs from the formation of inorganic sediments.(Note: The term inorganic sediments refers to those formed in chemical sedimentary rocks.)

________ are tiny "seed" particles created when small sediments or shell fragments are rolled by waves in water supersaturated with calcium carbonate.

Explain how the size, shape, and sorting of sediments can provide information about the distance the sediment has traveled from its source.

What sedimentary structure is visible in this image?

Approximately 75 percent of the planet's landmasses are covered by sedimentary and sedimentary rocks.

Explain how the intrusive igneous rock granite can be broken down from a crystalline igneous rock to a sediment and then finally become a sedimentary rock.

What is diagenesis?

________ is a variety of sandstone that is associated with submarine landslides called turbidity currents.

The velocity of moving water controls the sediment it can carry.How will a decrease in water velocity control the size of the sediment particle that is deposited first?