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Hardwoods--CAUSE and Park Paleontologist William Parker Explore the Petrified Forest

Hardwoods--CAUSE and Park Paleontologist William Parker Explore the Petrified Forest. CAUSE students, led by Paleontologist William Parker, hiking in Black Forest section of Petrified Forest National Park.

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Hardwoods--CAUSE and Park Paleontologist William Parker Explore the Petrified Forest

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  1. Hardwoods--CAUSE and Park Paleontologist William Parker Explore the Petrified Forest

  2. CAUSE students, led by Paleontologist William Parker, hiking in Black Forest section of Petrified Forest National Park.

  3. Many of the trees in Petrified Forest were transported in rivers, losing their branches and often their bark before being buried and petrified. The conversion to stone was caused by the difference in chemistry between the trees themselves and groundwater in the volcanic-ash-rich soils, and is described in more detail in the Enrichment of the textbook. This tree is Araucarioxylon arizonicum, an extinct relative of modern monkey-puzzle trees. Over 200 types of fossil plants are known from the park.

  4. A pile of petrified wood, Petrified Forest National Park. Most of the wood in the park was carried and buried in great floods.

  5. Paleontologist William Parker shows the CAUSE film crew the “Alpha Stump”, in the Black Forest section of Petrified Forest National Park. Unlike most of the fossil trees in the park, the “Alpha Stump” is in place, its roots in the soil where it grew about 210 million years ago.

  6. Insect burrows, probably the world’s oldest known fossil bee’s nest, in a petrified tree, Petrified Forest National Park.

  7. http://www.amnh.org/exhibitions/permanent/fossilhalls/vertebrate/specimens/images/vertev_spec_buettneria_pic.gifhttp://www.amnh.org/exhibitions/permanent/fossilhalls/vertebrate/specimens/images/vertev_spec_buettneria_pic.gif Park Paleontologist William Parker (upper right) and ranger and UC-Berkeley graduate student Randall Irmis (left) excavating armor plates of late-Triassic (Mesozoic) giant-armored-amphibian Koskinonodon, also called Buettneria, seefar right), Petrified Forest National Park.

  8. Paleontologist Randall Irmis shows CAUSE student Irene Meglis a still-sharp fossil tooth, Petrified Forest National Park.

  9. Late Triassic (Mesozoic) fossil bone fragments, Petrified Forest. A simple field test--fossil bone sticks to your tongue, and fossil wood doesn’t.

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