Petrified Forest National Park is a geological treasure trove, showcasing an array of fascinating rock formations and petrified wood specimens. The park’s unique landscape, shaped over millions of years, offers visitors a glimpse into Earth’s ancient past. From the colorful Chinle Formation to the iconic Tepees and Jasper Forest, the park’s rock places provide a captivating journey through time, revealing the secrets of prehistoric ecosystems and geological processes.
What Are the Key Geological Features of Petrified Forest National Park?

The Petrified Forest National Park is renowned for its remarkable geological formations, particularly the Chinle Formation from the Late Triassic Period. This formation is divided into several distinct members, each with its own unique characteristics:
- Blue Mesa Member:
- Age: Approximately 220-225 million years old
- Composition: Grey, blue, purple, and green mudstones with minor sandstone beds
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Best viewed: In the Tepees area of the park
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Sonsela Member:
- Age: About 216 million years old
- Composition: Three parts – Flattops One Bed, Jim Camp Wash Beds, and Rainbow Forest bed
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Notable feature: Contains logs of the Rainbow Forest
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Petrified Forest Member:
- Composition: Reddish mudstones and brown sandstone layers
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Notable feature: Includes the Black Forest Bed, dated at 213 ± 1.7 million years old
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Owl Rock Member:
- Age: Approximately 205 million years old
- Composition: Pinkish-orange mudstones with thin limestone layers and selenite gypsum lenses
- Location: Exposed on Chinde Mesa
Where Are the Most Impressive Rock Formations Located?

Petrified Forest National Park boasts several notable locations that showcase its unique geological features:
- The Tepees:
- Description: Colorful, zebra-striped mountains formed from the Chinle Formation
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GPS coordinates: Approximately 34.943144, -109.777760 (parking lot)
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Newspaper Rock:
- Feature: Over 600 petroglyphs made by Puebloan people
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Significance: Important cultural site within the park
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Jasper Forest Overlook:
- Highlight: Offers views of one of the largest petrified wood collections in the park
- Trail: Starting point for the Jasper Forest Trail
What Hiking Trails Offer the Best Views of Rock Formations?
The park offers several hiking trails that provide excellent opportunities to explore its rock formations and petrified wood:
Trail Name | Length | Difficulty | Key Features |
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Blue Forest Trail | 1 mile loop | Easy to moderate | Dense concentration of petrified wood, badlands views |
Jasper Forest Trail | 2 miles round trip | Moderate | Giant petrified logs, scenic overlooks |
Crystal Forest Trail | 0.8 miles loop | Easy | Showcases giant petrified logs |
Painted Desert Rim Trail | 1 mile loop | Easy | Panoramic views of the Painted Desert and colorful badlands |
What Amenities Are Available for Visitors?
Petrified Forest National Park provides various amenities to enhance the visitor experience:
- Parking: Available at key locations such as the Tepees, Jasper Forest Overlook, and Crystal Forest
- Restrooms: Located near parking areas and visitor centers
- Guided Tours: Offered at visitor centers, focusing on petrified wood specimens and rock formations
- Visitor Centers:
- Painted Desert Visitor Center (north end)
- Rainbow Forest Museum (south end)
Both centers offer information on the park’s geology, petrified wood, and natural resources.
What Guidelines Should Visitors Follow?
To preserve the park’s unique features and ensure a safe visit, follow these guidelines:
- Stay on designated trails to protect the environment and petrified wood specimens
- Do not remove any petrified wood or other park resources
- Check for seasonal conditions and potential trail closures due to weather
- Participate in park events and programs related to geology and paleontology
By adhering to these guidelines, visitors can help preserve the Petrified Forest National Park’s rock places for future generations while enjoying their own geological adventure.