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  2. Geology of Arizona - Wikipedia

    en.wikipedia.org/wiki/Geology_of_Arizona

    Glaciation of the southern hemisphere raised and lowered sea levels in Arizona, creating the ledge and slope topography common in the Grand Canyon, Sedona and Monument Valley, with alternating layers of siltstone, limestone, sandstone, dolomite and shale. The Kaibab Limestone is a famous formation from this time, covering much of northern ...

  3. Araucarioxylon arizonicum - Wikipedia

    en.wikipedia.org/wiki/Araucarioxylon_arizonicum

    Araucarioxylon arizonicum (alternatively Agathoxylon arizonicum) is an extinct species of conifer that is the state fossil of Arizona. [1] The species is known from massive tree trunks that weather out of the Chinle Formation in desert badlands of northern Arizona and adjacent New Mexico, most notably in the 378.51 square kilometres (93,530 acres) Petrified Forest National Park. [2]

  4. Petrified Forest National Park - Wikipedia

    en.wikipedia.org/wiki/Petrified_Forest_National_Park

    Petrified Forest National Park is a national park of the United States in Navajo and Apache counties in northeastern Arizona.Named for its large deposits of petrified wood, the park covers about 346 square miles (900 square kilometers), encompassing semi-desert shrub steppe as well as highly eroded and colorful badlands.

  5. Arizona is full of fossils. Here's where to look for ancient ...

    www.aol.com/arizona-full-fossils-heres-where...

    All around Arizona, rocks hold remains of life that lived hundreds of millions of years ago. When people think fossils, dinosaurs typically come to mind – but that’s only one part of the picture.

  6. Petrified wood - Wikipedia

    en.wikipedia.org/wiki/Petrified_wood

    Petrified wood (from Ancient Greek πέτρα meaning 'rock' or 'stone'; literally 'wood turned into stone'), is the name given to a special type of fossilized wood, the fossilized remains of terrestrial vegetation.

  7. Fulgurite - Wikipedia

    en.wikipedia.org/wiki/Fulgurite

    This is also known colloquially as shocked quartz. [8] Material properties (size, color, texture) of fulgurites vary widely, depending on the size of the lightning bolt and the composition and moisture content of the surface struck by lightning. Most natural fulgurites fall on a spectrum from white to black.

  8. Why are there giant, mysterious X's in the Arizona desert? - AOL

    www.aol.com/news/2017-06-01-why-are-there-giant...

    Almost 12 years ago, a pilot flying a small plane over the desert in Arizona spotted something she would never forget. Pez Owen told NPR that when she noticed white crosses on the ground, she and ...

  9. Aztec Sandstone - Wikipedia

    en.wikipedia.org/wiki/Aztec_Sandstone

    The Aztec Sandstone is made up of two units. The lower resistant sandstone unit (100 metres (330 ft) thick) is tan to off-white in outcrops but pinkish in fresh exposures. Cross-bedded lenses can easily be observed. Frosted and pitted quartz grains well-cemented by silica are described by Evans in 1958 and 1971.