Lot 143
North America, Southwestern United States, Arizona, Late Triassic, ca. 225 million years ago. The once organic wood from this prehistoric tree has fossilized into a solid piece of stone, almost made entirely of quartz - resembling a massive agate crystal! The Arizonian petrified wood is one of the most colorful and desirable types, often called "rainbow wood." The mirror like finish on this slab protects the brilliant stone coloration and makes it the perfect piece to mount as a unique tabletop for inside or even outside on a patio or garden. In fact, the "Agate House" is a Puebloan building made almost entirely from petrified wood - attesting to the durability to this gorgeous material! Size: 21" Diameter x 1.2" W (53.3 cm x 3 cm)
Fossilized trees from this time period come from the Chinle Formation of the southwestern USA, and the beautiful colors found in this formation - exemplified by the colors of this fossilized tree - give the Painted Desert of Arizona its name. Due to plate tectonics, this area was near the equator on the supercontinent Pangaea during the Late Triassic, which gave it a humid, sub-tropical climate. It was a floodplain below mountains to its south and a sea to its west; as a result, massive trees washed down from the mountains and came to rest in sediments that preserved them and fossilized them. The petrification process involves the rapid burial of the tree or pieces under sediment which prevents the usual decay. Flooding and volcanic activity are usually responsible for creating the layers of sand, silt, and ash needed to create the right types and amount of sediment. Mineralized water can then permeate through the wood, coating cell walls and filling the intercellular cavities which then fossilizes into stone. The detailed preservation of the wood, including knots, rings, and bark, are possible because the organic wood molecules become coated and surrounded with smaller silica molecules. Nine different species of tree have been identified in the fossilized deposits in the region; this example may be Araucarioxylon arizonicum, an extinct conifer tree (and the state fossil of Arizona). Fascinatingly, the Ancestral Puebloan people who lived in the region approximately 1000 years ago used petrified wood for making tools and even building houses!
Provenance: Private Berthoud, Colorado, USA collection
All items legal to buy/sell under U.S. Statute covering cultural patrimony Code 2600, CHAPTER 14, and are guaranteed to be as described or your money back.
A Certificate of Authenticity will accompany all winning bids.
We ship worldwide and handle all shipping in-house for your convenience.
#174785
- Condition: Professionally cut and polished with clear sealant over polished face. Other face is covered in protective sealant and the interior rings are not visible. Minor surface chips and abrasions to exterior bark diameter. Amazing coloration throughout.
Accepted Forms of Payment:
American Express, Discover, MasterCard, Visa
Shipping
Auction House will ship, at Buyer's expense
Artemis Fine Arts
You agree to pay a buyer's premium of 26.5% and any applicable taxes and shipping.
View full terms and conditions
| From: | To: | Increments: |
|---|---|---|
| $0 | $299 | $25 |
| $300 | $999 | $50 |
| $1,000 | $1,999 | $100 |
| $2,000 | $4,999 | $250 |
| $5,000 | $9,999 | $500 |
| $10,000 | $19,999 | $1,000 |
| $20,000 | $49,999 | $2,500 |
| $50,000 | $99,999 | $5,000 |
| $100,000 | $199,999 | $10,000 |
| $200,000 + | $20,000 |