Reading Rocks Part 2

What does each layer of rock in the Grand Canyon represent?

• Steps in a ladder

• Chapters in a book

• Leaves on a tree

• Pages in a diary

What type of rock is the Coconino Sandstone made of?

• Granite

• Marble

• Limestone

• Sandstone

What evidence suggests a huge desert once existed where the Coconino Sandstone is now?

• River channels

• Volcanic ash

• Sand dunes

• Fossilized bones

What creatures' tracks have been found in the Coconino Sandstone?

• Mammals

• Reptiles

• Dinosaurs

• Birds

What is the Kaibab Limestone made from?

• Volcanic ash

• Desert sand

• River sediment

• Marine organism remains

Which of the following animals did NOT live in the sea that formed the Kaibab Limestone?

• Sharks

• Sponges

• Snails

• Lizards