Geology of Navajo Sandstone

The video explores Snow Canyon State Park in Utah, focusing on the iconic Navajo Sandstone. It explains the formation of the sandstone during the Jurassic period, highlighting its reddish color due to iron oxide. The video also discusses cross beds, which reveal historical wind directions, and moqui marbles, which are iron oxide concretions formed by groundwater. The Navajo Sandstone is significant for its scenic beauty and geological features, found in places like Zion National Park and the Colorado Plateau.

What is the location of Snow Canyon State Park?

• Northern Utah

• Southwest corner of Utah

• Central Utah

• Eastern Utah

How old is the Navajo Sandstone?

• 100 million years

• 180 million years

• 150 million years

• 200 million years

What mineral primarily composes the Navajo Sandstone?

• Quartz

• Calcite

• Mica

• Feldspar

What gives the Navajo Sandstone its distinctive red color?

• Copper oxide

• Magnesium oxide

• Iron oxide

• Aluminum oxide

What geological feature is characterized by inclined rock layers in the Navajo Sandstone?

• Fault lines

• Cross beds

• Ripple marks

• Fossil beds

What are moqui marbles primarily composed of?

• Silica

• Iron oxide

• Calcium carbonate

• Clay minerals

How do moqui marbles form?

• Through volcanic activity

• Through glacial movement

• By precipitation of iron oxide from groundwater

• By sediment compaction

Where can the Navajo Sandstone be prominently found?

• Yellowstone National Park

• Zion National Park

• Grand Canyon

• Yosemite National Park

What is the cumulative thickness of the Navajo Sandstone in the southwestern corner of Utah?

• 4,000 feet

• 3,000 feet

• 2,000 feet

• 1,000 feet

What is the significance of the Navajo Sandstone in the Colorado Plateau?

• It contains the largest mineral deposits

• It is one of the most scenic and iconic formations

• It is a major source of fossils

• It is the oldest rock formation