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Petrified wood at Petrified Forest National Park, Arizona

Colorful textured petrified wood. Closeup within the Petrified Forest national park.

Petrified logs in the Painted desert and Petrified Forest National Park, Arizona, USA.

Petrified forest

Blue Mesa Scenic Trail, Petrified Forest National Park, Arizona, USA

Badlands are a particular type of rock formation found in arid regions around the world. These formations require poorly consolidated rock and infrequent but torrential rain. The soft rock allows large quantities of water to channel down gullies, carrying away sediment. Bentonite clay within these formations can swell up with moisture. As the clay dries it shrinks and cracks, creating a surface resembling the skin of an elephant. Beneath the surface, an intricate maze of natural pipes and spaces form within the badlands. This hidden plumbing appears on the face of the badlands as dimples, sinks, slumps and seeps. As erosion continues, new features including caves and natural bridges can form. Badlands often take on varied colors giving the formations a banded appearance. These colorful badland formations were at Blue Mesa in Petrified Forest National Park near Holbrook, Arizona, USA.

Painted desert badlands. Arizona, USA

Log from a fallen tree in the Petrified Forest in Arizona.

The trunks of petrified trees, multi-colored crystals of minerals. Petrified Forest National Park, Arizona

Blue Mesa trail in Petrified Forest National Park, Arizona, USA.

Close-up of Petrified Wood in Petrified Forest National Park, Arizona

Fossil Sequoia tree slab from Clarno Formation in Cow Valley Oregon. Petrified wood from a Sequoia tree of Eocene age. Agatized petrified wood plank slab.

Red Orange Yellow Petrified Wood Log Abstract Crystal Forest Petrified Forest National Park Arizona

Focus stacked colorful petrified tree trunk. Petrified wood log in the Petrified Forest.

Petrified wood, Petrified Forest National Park, Arizona

Southeast Arizona, USA - 04/26/2011: Petrified tree at Petrified forest national park in Arizona

Colorful petrified wood in the Petrified Forest National Park, Escalante. Utah

A petrified giant log along a trail in the Rainbow Forest within Petrified Forest National Park in northern Arizona on a bright, sunny day.

A tree trunk on the ground in Petrified Forest National Park, Arizona, USA

Large piec of petrified wood in the Escalante Petrified Forest State Park.

Detail of the wonderous colors and variations of the Petrified trees found in the Petrified Forest National Park

Petrified stumps and mesa in one of the world's largest and most colorful concentrations of petrified wood and multi-hued badlands. Petrified Forest National Park, Arizona, USA.

Rugged and Scenic landscape of the ancient petrified forest national park in Arizona

Agate is a microcrystalline variety of quartz, chiefly chalcedony, cryptocrystalline form of silica. Although agates may be found in various kinds of rock, they are classically associated with volcanic rocks but can be common in certain metamorphic rocks. Most agates occur as nodules in volcanic rocks or ancient lavas where they represent cavities originally produced by the disengagement of volatiles in the molten mass which were then filled, wholly by siliceous matter deposited in regular layers upon the walls. Cathedral Valley, Capitol Reef National Park, Utah.

Beautiful colrs in Petrified Trees in Petrified Forest National Park

Part of a petrified tree trunk on the ground within Petrified Forest National Park in northeastern Arizona on a hot summer day.

Red Orange Yellow Petrified Wood Log Blue Mesa Petrified Forest National Park Arizona

Red rocks at Valley of Dreams, New Mexico, USA

Desert landscape of the beautiful petrified forest in Arizona.

Petrified tree log laying in painted desert. Colorful geologic sights within Petrified Forest national park.

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