The 'peanuts' are actually boreholes made in the wood by a shipworm which is a tiny species of clam. Peanut wood: A close-up of a slice of petrified wood from Australia known as 'peanut wood' because of its white markings the size and shape of peanuts. Park can observe the petrified wood and photograph it however, collecting petrified wood in the park is prohibited. That is why areas of the Park are covered with a litter of petrified wood trunks, branches and fragments.

Instead of eroding away, the wood accumulated on the ground surface as the surrounding mud rocks and ash layers were eroded away. The petrified wood is much harder and resistant to weathering than the mud rocks and ash deposits of theĬhinle. In the millions of years after the Chinle Formation was deposited, the area was uplifted and the rocks deposited above the Chinle These sediments, plant debris, and volcanic ash became part of a rock unit known today as the Chinle Formation. Trace amounts of iron, manganese and other minerals were included in the silica and gave the petrified wood a variety ofĬolors. The dissolved ash served as a source of silica that replaced the plant debris, creating petrified The soluble ash was dissolved by groundwaterįlowing through the sediments. Rapid burial allowed the plant debris to escape destruction by oxygen and insects. These eruptions blanketed the area in volcanic ash with a high silica content. Fallen trees and broken branches were often buried by Up to 9 feet in diameter and 200 feet tall lived and died in these lowlands. Rivers flooded by tropical rain storms washed mud and other sediments into the lowlands. About 225 million years ago, this area was a lowland with a tropical climate and covered by a denseįorest. The most famous locality for observing petrified wood is Petrified Forest National Park near the community of Holbrook in This specimen shows the growth rings, cellular structure, and external bark. Petrified wood: A nice piece of petrified wood representing a limb cross section.

When the Chinle weathers away, the log will be lowered to the ground surface. At the top of the gulley, a 'pedestal log' is suspended on a column of Chinle Formation. Petrified logs: An accumulation of petrified logs in a gulley at Petrified Forest National Park. These specimens with near-perfect preservation are unusual however, specimens that exhibit clearly recognizable bark and woody structures are very common. Some specimens of petrified wood are such accurate preservations that people do not realize they are fossils until they pick them up and are shocked by their weight. The result is a fossil of the original woody material that often exhibits preserved details of the bark, wood, and cellular structures. Then, groundwater rich in dissolved solids flows through the sediment, replacing the original plant material with silica, calcite, pyrite, or another inorganic material such as opal. It forms when plant material is buried by sediment and protected from decay due to oxygen and organisms. It is the hypothetical source of/evidence for its existence is provided by: Sanskrit dadhati 'puts, places ' Avestan dadaiti 'he puts ' Old Persian ada 'he made ' Hittite dai- 'to place ' Greek tithenai 'to put, set, place ' Latin facere 'to make, do perform bring about ' Lithuanian dėti 'to put ' Polish dziać się 'to be happening ' Russian delat' 'to do ' Old High German tuon, German tun, Old English don 'to do.Petrified wood is a fossil. It forms all or part of: abdomen abscond affair affect (v.1) 'make a mental impression on ' affect (v.2) 'make a pretense of ' affection amplify anathema antithesis apothecary artifact artifice beatific benefice beneficence beneficial benefit bibliothec bodega boutique certify chafe chauffeur comfit condiment confection confetti counterfeit deed deem deface defeasance defeat defect deficient difficulty dignify discomfit do (v.) doom -dom duma edifice edify efface effect efficacious efficient epithet facade face facet facial -facient facile facilitate facsimile fact faction (n.1) 'political party ' -faction factitious factitive factor factory factotum faculty fashion feasible feat feature feckless fetish -fic fordo forfeit -fy gratify hacienda hypothecate hypothesis incondite indeed infect justify malefactor malfeasance manufacture metathesis misfeasance modify mollify multifarious notify nullify office officinal omnifarious orifice parenthesis perfect petrify pluperfect pontifex prefect prima facie proficient profit prosthesis prothesis purdah putrefy qualify rarefy recondite rectify refectory sacrifice salmagundi samadhi satisfy sconce suffice sufficient surface surfeit synthesis tay ticking (n.) theco- thematic theme thesis verify. *dhē-, Proto-Indo-European root meaning 'to set, put.'

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