
	Where results make sense

Topic: Petrified wood

Related Topics

Petrified Forest National Park

Petrified palmwood

Araucarioxylon arizonicum

Tropical and subtropical dry broadleaf forests

Petrification

State gem

Araucariaceae

State Fossil

Xylem

Tree

Lignin

Fossil

American West

Amusement park

Atomic weapons

	Petrified Wood Park, Lemmon, South Dakota
		Petrified Wood Park was built from 1930-32 by town men under the command of visionary Ole S. Quammen.
		A building referred to as "the Castle" was crafted from a variety of petrified wood and thousands of pounds of petrified dinosaur and mammoth bones.
		The Petrified Wood Park Museum is housed in an imposing petrified wood structure with spires spaced along the outer walls.
	www.roadsideamerica.com /attract/SDLEMpetrified.html (778 words)

	Petrified wood, rock, crystal, mineral, gem stone, birth stones - mineralgallery
		Wood opal or petrified wood should really be included in the quartz group of stones, but it is not normally accepted as being a true mineral and is frequently protected as a national relic in countries where it is scarce.
		Petrified wood is the result of a process called petrifaction (or petrification), meaning "to change into stone." The process involves mineral emplacement, in which dissolved minerals are carried by groundwater into the porous parts of buried wood (or shells or bones), where they crystallize out and settle, filling the pores.
		Wood that becomes petrified escapes this fate by being quickly buried - say, in a catastrophic mud slide or in volcanic lava or ash flow - which preserves it in an oxygen-free environment.
	www.mineralgallery.co.za /woodopal.htm (1102 words)

	Petrified wood gemstone. Description, wares from petrified wood.
		Areas of distribution of a petrified wood are volcanic areas where there were eruptions of volcanos in the territories of distributions of forests of tertiary and other periods.
		These are areas of volcanic activity in platform and geological areas of Average Siberia where trunks and fragments of a petrified wood are marked in alluviums on the rivers Lenas, Vilyui, Vitim, Stony Tunguska etc., at coast of Kamchatka, in Georgia (Goderdzky pass).
		The specific structure of petrified wood in these regions is various: coniferous (a fur-tree, a pine) and deciduous (an alder, an ash, a birch, an oak etc.).
	www.gemstonesgift.com /petrifiedwood.html (408 words)

	Petrified Wood: Buy petrified wood (fossil wood) from Treasures of the Earth, Ltd.
		In order for the petrified wood you see here to become petrified, the wood must first be covered with such agents as volcanic ash, volcanic mud flows, sediments in lakes and swamps or material washed in by violent floods - by any means which would exclude oxygen and thus prevent decay.
		Solutions of silica dissolved in ground water infiltrate the buried wood and through a complex chemical process are precipitated and left in the individual plant cells.
		The beautiful and varied colors of fossil wood are caused by the presence of other minerals that enter the wood in solution with the silica.
	www.universaltreasures.com /wood.htm (298 words)

	NDGS - North Dakota Notes #3 (Site not responding. Last check: )
		Petrified wood is widespread in western North Dakota, and pieces of it can also be found in gravels in the glaciated portion of the state.
		Petrified wood is often used in landscaping, and many driveways and flowers beds are lined with or centered around fine specimens.
		Petrified wood is locally so common that some farmers find it a nuisance and pile it up along fence rows, much like their counterparts in the east pile up glacial erratics.
	www.state.nd.us /ndgs/NDNotes/ndn3_h.htm (1134 words)

	Petrified Wood -DesertUSA
		One of the greatest concentrations of petrified wood in the world is found in the Petrified Forest National Park in northeast Arizona.
		Petrified wood is known for its exquisite color and detail.
		The petrified logs were buried in the sediment for millions of years, protected from the elements of decay.
	www.desertusa.com /mag00/jan/papr/rock.html (618 words)

	NZ Legacy History and Preservation - Petrified Wood
		Petrified wood resources on NZ Mineral lands occur in a discontinuous band that surround the southern end of the Petrified Forest National Park (PFNP).
		In the current political climate, petrified wood resources therefore must be evaluated not only in terms of effort required to extract and market value, but also in terms of public perception of extraction activities.
		For a tree to become petrified, it must be in an anaerobic environment to prevent decay, that is, it somehow must be buried in an oxygen free environment, possibly in the bend of a silt-laden river, in the bottom of a lake or, most frequently in volcanic deposits.
	www.nzlegacy.com /petrified_wood.htm (610 words)

	GEOCLASSICS - Petrified Wood
		Petrified Forest National Park was first established as a National Monument on December 8, 1906, when Teddy Roosevelt signed the proclamation.
		The ''Petrified forest" is a spectacular region of fossil logs in the Painted Desert in Arizona.
		The transformation from wood to stone occurred about 200 million years ago during the end of the Triassic Period of the Mesozoic Era.
	www.geoclassics.com /ptwoodtable.htm (282 words)

	Petrified Forest
		In addition to the beautiful landscape, Petrified Forest National Park is home to the countless petrified logs for which the park is named.
		Petrified wood can be formed in many different ways, but ideal conditions are needed.
		The amount of petrified wood and size of the largest chunks is remarkable.
	users.gurulink.com /wildebeest/petrified_forest.htm (1431 words)

	Petrified Wood Agate ~ Sterling Silver
		Petrified Wood Agate, usually brown, tan, fl and red, is the fossilized remains of ancient trees.
		Therefore, Petrified Wood is said to impart a grounding force that increases peace and wisdom.
		Petrified Wood Agate is often mentioned as a general protector of health, increasing longevity and sturdiness of health.
	www.luckygemstones.com /petrified-wood-jewelry-agate.htm (331 words)

	Petrified Forest National Park: Petrified Wood
		John Muir called the area "a kaleidoscope fashioned by God's hand." As can easily be seen, the petrified wood displays a variety of colors resulting from the minerals it contains--pine quartz for white and gray, iron for the reds and yellows, browns, blues, and greens, and carbon and manganese for the fl.
		The petrified wood, not unexpectedly, is much heavier than the original log, weighing as much as 150-200 pounds per cubic foot.
		Most of the petrified logs in the park were from trees of the variety Araucarioxylon, large trees which reached 100 feet in height and 6-8 feet in diameter.
	www.shannontech.com /ParkVision/PetForest/PetWood.html (687 words)

	‘Instant’ petrified wood
		Wood thoroughly impregnated, even if necessary by repeated applications or submersions of the wood in the solution, after drying evidently has all the characteristics of petrified wood, including its appearance.
		The process of petrification of wood is now so well known and understood that scientists can rapidly make petrified wood in their laboratories at will.
		Thus the timeframe for the formation of the petrified wood within the geological record is totally compatible with the biblical time-scale of a recent creation and a subsequent devastating global Flood.
	www.answersingenesis.org /creation/v17/i4/wood.asp?vPrint=1 (1648 words)

	Petrified Wood
		Petrified wood is a fossil of a woody plant preserved by permineralization through time by chemical and physical
		Often, petrified wood is found in large accumulations where the trees evidently grew, died and later petrified.
		A petrified garden or park is a display of petrified wood probably not in situ.
	www.northern.edu /natsource/earth/Petrif1.htm (1144 words)

	YourGemologist / International School of Gemology Study of Petrified Wood
		So that while you see the wood just as it looked millions of years ago, it is actually a rock that has taken the form of the wood.
		The watery mud that covered them was rich in calcium, and eventually, when the water dried up, the calcium filled in where the wood once existed and those conifer trees became petrified wood, or calcified wood, which ever you want to call it.
		This is a type of petrified wood that has had all of the wood cells replaced with calcite mineral.
	www.yourgemologist.com /Kids/petrifiedwood/petrifiedwood.html (1253 words)

	Boston.com / News / Science / Scientists create petrified wood in days
		Natural petrified wood occurs when trees are buried without oxygen, then leach their wood components and soak up the soil's minerals.
		For instance, at the Ginkgo Petrified Forest, a state park on the west shore of the Columbia River in central Washington, trees were believed to have been buried without oxygen beneath molten lava millions of years ago.
		The wood was air-dried, cooked in an argon-filled furnace at temperatures as high as 1,400 degrees and cooled in argon to room temperature.
	www.boston.com /news/science/articles/2005/01/25/scientists_create_petrified_wood_in_days?mode=PF (427 words)

	Petrified Wood
		Petrified wood has been preserved for millions of years by the process of petrifaction.
		As the sediment water, rich in minerals, seeped into the wood, it deposited the minerals in the air spaces within the wood tissues until all of the microscopic spaces in the wood were filled.
		It is theorized that the original wood acted as a framework to hold the minerals as they solidified, and the logs literally became stone with only 2% of their volume taken up by wood cellulose fiber.
	www.freewebs.com /petrifiedwood/index.htm (484 words)

	Astrology & Gemstones, Birthstones: Petrified Wood Gemstone - Gems shop online
		Petrified wood is wood that has fossilized leaving a stone like replica of the original wood.
		Petrified Wood helps restore physical energy and is good in relieving hip and back problems.Petrified wood is fossil wood used for jewelry and ornamentation.
		Petrified Wood is of course ancient wood that has been buried and replaced (fossilized) by quartz, agate or other colorful minerals.
	www.findyourfate.com /gemology/gemstones/PetrifiedWood.html (191 words)

	Petrified Palm Wood
		A type of petrified wood that is found in Louisiana is called "petrified palm wood".
		Petrified Palm wood is a group of fossil woods that contain prominent rod-like structures within the regular grain of the silicified wood.
		Petrified palm wood is a favorite of rock collectors because it is replaced by silica and exhibits well-defined rod-like structures and variety of colors.
	www.intersurf.com /~chalcedony/Palm.html (755 words)

	Petrified Forest National Park - Petrified Wood (U.S. National Park Service)
		Petrified wood found in the park and the surrounding region is made up of almost solid quartz.
		Over 200 million years ago, the logs washed into an ancient river system and were buried quick enough and deep enough by massive amounts of sediment and debris also carried in the water, that oxygen was cut off and decay slowed to a process that would now take centuries.
		The quartz within the petrified wood is hard and brittle, fracturing easily when subjected to stress.
	www.nps.gov /pefo/naturescience/petrified-wood.htm (403 words)

	Petrified Wood Regulations
		(1) The maximum quantity of petrified wood that any one person is allowed to remove without charge per day is 25 pounds in weight plus one piece, provided that the maximum total amount that one person may remove in one calendar year shall not exceed 250 pounds.
		(3) Petrified wood obtained under this section shall be for personal use and shall not be sold or bartered to commercial dealers.
		(4) The collection of petrified wood shall be accomplished in a manner that prevents unnecessary and undue degradation of lands.
	www.amfed.org /sfms/petrified_wood-reg.html (438 words)

	Petrified Wood in Days
		Petrified wood is a type of fossil, in which the tissues of a dead plant are replaced with minerals (most often a silicate, like quartz).
		Shin's petrified wood journey began in a less dramatic fashion, a few minutes away at Lowe's, Shin's group reports in the current issue of the journal Advanced Materials, in the do-it-yourselfer chain's lumberyard,.
		Instant petrified wood, the silica taking up permanent residence with the carbon left in the cellulose to form a new silicon carbide, or SiC, ceramic.
	www.physorg.com /news2801.html (513 words)

	Presto! Instant Petrified Wood Created in Lab \| LiveScience
		After the wood had been air-dried, the pieces were placed into a furnace filled with argon gas and steadily heated to 1400 degrees Celsius, where the samples baked for two hours.
		The finished product was silicon carbide, a ceramic version of the wood, which was petrified as if it had been trapped in sediment for millions of years.
		Shin proposes that because of the petrified wood's porosity and high surface area -- one cubic centimeter has the surface area of a football field -- it could be particularly useful for filtering or absorbing pollutants or other chemicals.
	www.livescience.com /technology/050127_petrified_wood.html (572 words)

	Mississippi State Fossil: Petrified Wood (SiO2 - Silicon Dioxide)
		Petrified Wood is real wood that has turned into rock composed of quartz crystals.
		Because it is difficult to know exactly which trees these woods came from, they are assigned to paleobotanical form genera with the suffix -oxylon (meaning "looks like") -- hence wood which resembles that of modern palms is called Palmoxylon, but may or may not be from trees closely related to modern palms.
		This petrified wood formed when a tree was buried by sediment, and its tissues were replaced by silica in the groundwater.
	www.e-referencedesk.com /resources/state-fossil/mississippi-stone.html (453 words)

	Petrified Forest National Park Information Page
		The petrified logs, and other fossils of plants and creatures that lived in the area, and the rocks locking them in places all testify to changed in the environment through millions of years.
		After a period of using the wood for souvenirs and numerous commercial ventures, territorial residents recognized that the supply of petrified wood was not endless.
		Descendants of these early residents of Petrified Forest might be found in the historic pueblos in the surrounding region, the Hopi pueblos about 100 km to the northwest or the Zuni pueblos about 70 km to the east in western New Mexico.
	www.petrified.forest.national-park.com /info.htm (3591 words)

	Definition of Petrified wood
		Petrified wood is a type of fossil, in which the tissues of a dead plant are replaced with minerals (most often a silicate, like quartz).
		Petrified wood can be extremely detailed, often reflecting the internal structures of the plant from which they form.
		Petrified wood has a Mohs hardness level of 7, the same as quartz.
	www.wordiq.com /definition/Petrified_wood (241 words)

	Eden Valley PetWood
		The petrified wood from one forest is known to collectors as Eden Valley Petrified Wood and is named after the town of Eden, Wyoming.
		Eden Valley Petrified Wood was formed from plants living about 50 million years ago and the rock exhibits features not found in fossil wood anywhere else in the world.
		Silica-rich water solutions seeping through the rock then petrified the wood and filled in the spaces left between the dried wood and the hardened cast with agate, calcite, and quartz (image #4).
	www.thegemshop.com /eden_valley.htm (485 words)

	Petrified Wood
		Wood lasts a lot longer than flesh without rotting, but we have likely all seen a fallen log rotting on the ground in the forest.
		During petrification of wood, the walls of every cell are replaced by a dissolved rock solution, such as a silicate or limestone.
		The petrified blocks are also porous, so that they can be used in processes in which gases need to permeate a large surface area, such as separating industrial chemicals, filtering pollutants, and soaking up contamination.
	www.johnpratt.com /items/docs/lds/meridian/2005/petrified.html (3225 words)

Try your search on: Qwika (all wikis)