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trovants in romania wikipedia

Some of the most unusual concretion nuclei,[8] are World War II military shells, bombs, and shrapnel, which are found inside siderite concretions found in an English coastal salt marsh. The territory of modern-day Romania was inhabited in ancient times by the Dacians, mentioned in the historical sources of the time for their bravery. 281–296. For now, they remain a popular tourist attraction in Romania. They can vary in length from 2 in (5.1 cm) to over 22 in (56 cm) and often exhibit concentric grooves on their surfaces. v. 26, pp. Ronald Lee’s research suggests that North-Central India is their original homeland, although today many dwell in Europe—Italy, Spain, and Eastern Europe in particular— linguistic and genetic specialists are able to point rather confidently t… Parry, J. Ormo, and G. Komatsu, 2005. Romania’s “Living” stones, more commonly known as Trovants, are the only stones in the world listed as a living organism. Poenari Castle. Muzeul Natural al Trovanților Costești - Vâlcea, Concretion - pagina corectă în limba engleză, de pe Wikipedia, 4 locații turistice geniale pentru un weekend. They were created by the precipitation of iron, which was dissolved in groundwater.[33][34][35]. Zaton, M., 2010, Hiatus concretions: Geology Today. One Wood Monastery. Frâncești, Romania. Beitler, W.T. Trovants of Costesti, Romania. The calcium ions present in seawater, or in the pore water of the surrounding clay sediments, slowly diffuse towards the center of the initially soft concretion and progressively precipitate in contact with the carbonate anions present along their path and produced by the decaying organic matter. Después de una lluvia la superficie de estas rocas se cubre de protuberancias que … [15][16][17][18] The much smaller septarian concretions found in the Kimmeridge Clay exposed in cliffs along the Wessex coast of England are more typical examples of septarian concretions. Romania (old spelling: Rumania, Roumania; Romanian: România, IPA: [ro.mɨˈni.a]) is a country in southeastern Europe. A spectacular example of boulder septarian concretions, which are as much as 3 meters (9.8 feet) in diameter, are the Moeraki Boulders. 119, No. They often outwardly resemble fossils or rocks that look as if they do not belong to the stratum in which they were found. They are found throughout the fossil record but are most common during periods in which calcite sea conditions prevailed, such as the Ordovician, Jurassic and Cretaceous. v. 228, pp. He was life-long friends with Mircea Eliade and Emil Cioran. There is, however, a special type of stone in Romania that is a complete exception. And usually all that we get are misconceptions, an altered image of what the country and its people really are. În România, trovanții se găsesc în mai multe locuri: Piatra sferică la Muzeul Național din Costa Rica. Sahabat anehdidunia.com trovants adalah istilah geologi yang dipakai di Romania untuk menyebutkan sedimen pasir yang menyatu membentuk sebuah batu (pasir yang disemen). Known in Romania as “Trovants” the stones of Costesti, Romania are a type of sandstone concretion that secrete cement and can at times appear to grow as if alive. In local brickyards, they were called "clay-dogs" either because of their animal-like forms or the concretions were nuisances in molding bricks. [36] These concretions are called "pop rocks" because they explode if thrown in a fire. 21-41. [37] Prolonged heating of either a pyrite or marcasite concretion will convert portions of either mineral into pyrrhotite causing the concretion to become slightly magnetic. [9][10] In concentric growth, the concretion grows as successive layers of mineral precipitate around a central core. Similar cannonball concretions, which are as much as 4 to 6 m (13 to 20 ft) in diameter, are found associated with sandstone outcrops of the Frontier Formation in northeast Utah and central Wyoming. It sounds like a tall tale or urban legend, but science confirms it. They are commonly composed of a carbonate mineral such as calcite; an amorphous or microcrystalline form of silica such as chert, flint, or jasper; or an iron oxide or hydroxide such as goethite and hematite. Prima locație este o carieră de nisip care se află pe partea stângă a șoselei ce leagă Râmnicu Vâlcea de Horezu, înainte de intrarea în satul Costești. [26] "Hiatus" refers to the break in sedimentation that allowed this erosion and exposure. According to OpenSignal, Romania occupies the 4 th place out of 78 when it comes to 4G speed.. 31. They are typically associated with thin layers of altered volcanic ash, called bentonite, that occur within the chalk comprising the Smoky Hill Chalk Member. Everyone looks there to see the trovants. and PDF file of Carbonate Concretions--A Bibliography, CMU Online Digital Object Repository, Central Michigan University, Mount Pleasant, Michigan. Then it gets a bit tricky. Estas enigmáticas piedras “vivientes” pueden crecer desde unos pocos milímetros, hasta los 10 metros. Athenee Palace Hilton, otherwise the Epoque Hotel. McBride, E.F., M.D. Depending on the environmental conditions present at the time of their formation, concretions can be created by either concentric or pervasive growth. Picard, and R.L. In the Oligocene Boom Clay Formation (Rupelian age: ~ 34 – 29 Ma) in Belgium, flattened septaria are found in horizontal clay layers enriched in calcium carbonate, so their spatial distribution suggests they formed at the bottom of the ancient sea under special conditions. Some theories suggest the expansion of gases (CO2, CH4) produced by the decay of organic matter. Landis, and P. Dale, 1985. The stones are very oddly shaped and seem to be growing as the years progress. These concretions range in shape from spheres to discs, buttons, spiked balls, cylindrical forms, and other odd shapes. and W.T. They formed by the early cementation of sand by calcite. The name was introduced by the Romanian naturalist Gh. Mozley, P.S., and Davis, J.M., 2005, Internal structure and mode of growth of elongate calcite concretions: Evidence for small-scale microbially induced, chemical heterogeneity in groundwater: Geological Society of America Bulletin, v. 117, 1400-1412. Romania’s 22,298km rail network is the 15th most extensive in the world. Somewhere modern or do you want a feel of the old times? It includes the desiccation of clay-rich, gel-rich, or organic-rich, cores leading to the shrinkage of the concretion's softer center. [12] Cracks are highly variable in shape and volume, as well as the degree of shrinkage they indicate. n. 77, pp. Loope D.B., Kettler R.M., Weber K.A., 2011, Morphologic Clues to the origin of Iron Oxide-Cemented Sphereoids, Boxworks, and Pipelike Concretions, Navajo Sandstone of South-Central Utah, U.S.A, The Journal of Geology, Vol. v. 44, pp. A few of these concretions enclose, at least in part, large flattened valves of inoceramid bivalves. Consisting of a stone … Concretions vary considerably in their compositions, shapes, sizes and modes of origin. “Muzeul Trovantilator” (Trovants Museum National Reserve) was inaugurated in 2004 and is … Mar 17, 2016 - Explore Serena Kuma's board "Visit: Romania", followed by 164 people on Pinterest. Because of the variety of unusual shapes, sizes and compositions, concretions have been interpreted to be dinosaur eggs, animal and plant fossils (called pseudofossils), extraterrestrial debris or human artifacts. These concretions range in size from a few millimeters to as much as 0.7 m (2.3 ft) in length and 12 cm (0.39 ft) in thickness. This process results in roughly spherical concretions that grow with time. Consisting of a stone core with an outer shell of sand, after a heavy rain small forms are said to appear on the rocks leading them to be dubbed the “growing stones” by locals. Concretions are found in a variety of rocks, but are particularly common in shales, siltstones, and sandstones. For the genus of gastropod snail, see. Ca formare seamană cu stalactitele și stalagmitele din peșteri. Also, when they are either cut or hammered, they produce sparks and a burning sulfur smell. On the other hand, iron sulfide concretions, which either are composed of or contain either pyrrhotite or smythite, will be magnetic to varying degrees. Descriptions dating from the 18th century attest to the fact that concretions have long been regarded as geological curiosities. As stalactites are always slowly deposited drop by drop by gravity-driven water flow under unsaturated conditions it is a sign of a more recent evolution when the clay formation was no longer immersed in the sea. In Romania’s Valcea County, there are boulders called trovants that grow. They range from pea-size to baseball-size. pyrite and marcasite, or in some cases jarosite, which are found in outcrops of the Smoky Hill Chalk Member of the Niobrara Formation within Gove County, Kansas. In the Connecticut River Valley, these concretions are often called "claystones" because the concretions are harder than the clay enclosing them. Ok touchdown, you're in Bucharest, the capital of Romania. In Romania, the stones are called Trovants, which is a term coined by naturalist Gh. These concretions are found eroding out of Paleocene mudstone of the Moeraki Formation exposed along the coast near Moeraki, South Island, New Zealand. Boles, J.R., C.A. [38][39][40] Similar disc-shaped calcium carbonate concretions have also been found in the Harricana River valley in the Abitibi-Témiscamingue administrative region of Quebec, and in Östergötland county, Sweden. 5 (September 2011), pp. Really. They are composed of calcite-cemented mud with septarian veins of calcite and rare late-stage quartz and ferrous dolomite. Concretions form within layers of sedimentary strata that have already been deposited. Murgoci, formerly of the University of Bucharest. There’s a perfectly logical but rather complicated explanation, involving the nearby sand quarry, the mineral-rich rain of the area, and other factors that make … Other concretions, which formed as a result of microbial sulfate reduction, consist of a mixture of calcite, barite, and pyrite. septarium, from the Latin septum "partition, separating element", referring to the cracks / cavities separating polygonal blocks of hardened materials). [1] Concretions are often ovoid or spherical in shape, although irregular shapes also occur. Siderite or pyrite coatings are also occasionally observed on the walls of the cavities present in the septaria, giving rise respectively to a panoply of bright reddish and golden colors with characteristic iridescences. Boles, J. R., C. A. Landis, and P. Dale, 1985. [citation needed], Moqui Marbles, also called Moqui balls or "Moki marbles", are iron oxide concretions which can be found eroding in great abundance out of outcrops of the Navajo Sandstone within south-central and southeastern Utah. Milliken, 2003, Calcite-Cemented Concretions in Cretaceous Sandstone, Wyoming and Utah, U.S.A.: Journal of Sedimentary Research. Sunt incorect cunoscuți în anumite cercuri sub numele de "pietre care cresc". Without knowing Romania, a person’s perception of the place is based on what he or she heard or read about the country. In fact, metamorphic rocks are completely absent from the Smoky Hill Chalk Member. You can take a Trovant, place it in your garden, and see it grow. Ultima editare a paginii a fost efectuată la 20 iunie 2019, ora 15:02. Wallachia, Romania. 4–10. M. Murgoci, in his work “ The Tertiary in Oltenia,” where he makes reference to the odd geological features. v. 73, n. 3, p. 462-483. You're going to want to stay somewhere overnight, and kick your feet up. The cementation process seems to proceed from outside (harder) to inside (softer) along with the Ca2+ ions diffusion transport. The city is called Costeti and is located in the Valcea region in southern Romania. These rocks are composed mainly by a hard stone core and the rest is made up of sand which forms around the core as its shell. Wilson, M.A., and Taylor, P.D., 2001, Palaeoecology of hard substrate faunas from the Cretaceous Qahlah Formation of the Oman Mountains: Palaeontology. A distinctive feature of hiatus concretions separating them from other types is that they were often encrusted by marine organisms including bryozoans, echinoderms and tube worms in the Paleozoic [27] and bryozoans, oysters and tube worms in the Mesozoic and Cenozoic. M. Murgoci in his work “ The Tertiary in Oltenia ”. It is composed of six villages: Budișteni, Costești, Gomoești, Groșani, Pietrosu and Spataru. Urban (53,93%) Rural (46,07%) Conform recensământului din 2011 , România are o populație de 20 121 641 de locuitori, iar sporul natural este negativ. See more ideas about romania, romania travel, visit romania. https://ro.wikipedia.org/w/index.php?title=Trovant&oldid=12939657, Creative Commons cu atribuire și distribuire în condiții identice, Se mai pot găsi în Călărași aproape de malul Dunării, și chiar și în nivele nisipoase-argiloase din. Au forme deosebite, antropomorfe, zoomorfe, (de la dimensiunea câtorva milimetri până la formaţiuni care ating 6 -10 metri) şi se afirmă despre ele că sunt o formă de trecere de la structura minerală la cea vegetală. Burley, C.D. The diameter of the trovants vary from 1-2 cm to 2-3 m. It is a city in Romania that attracts scientists and tourists as well. "The Moeraki Boulders; anatomy of some septarian concretions", 10.1306/212F86E3-2B24-11D7-8648000102C1865D, "Isotopic evidence for origin of the Moeraki septarian concretions, New Zealand", 10.1306/212F8F6C-2B24-11D7-8648000102C1865D, "Oxygen and carbon isotopic composition of marine carbonate concretions: an overview | Request PDF", "Calcite-Cemented Concretions in Cretaceous Sandstone, Wyoming and Utah, U.S.A.", "Complex cementation textures and authigenic mineral assemblages in Recent concretions from the Lincolnshire Wash (east coast, UK) driven by Fe(0) to Fe(II) oxidation", "Relationship between oriented calcite concretions and permeability correlation structure in an alluvial aquifer, Sierra Ladrones Formation, New Mexico", 10.1306/D4268293-2B26-11D7-8648000102C1865D, "Mudrock‐hosted carbonate concretions: a review of growth mechanisms and their influence on chemical and isotopic composition", "The Enduring Mystery of the Martian 'Blueberries' Discovered by Opportunity Rover", "The Epoch Times - Mysterious Huge Stone Eggs Discovered in Hunan Province", All that nature can never do, part IV : stone spheres, Stone balls in Slovakia, Czech Republic and Poland, These Eerie 'Living Stones' in Romania Are Fantastical, And Totally Real, https://en.wikipedia.org/w/index.php?title=Concretion&oldid=1001961187, Short description is different from Wikidata, Articles with deprecated sources from May 2020, Articles with unsourced statements from May 2010, Articles with dead external links from November 2019, Articles with permanently dead external links, Creative Commons Attribution-ShareAlike License. McBride, E.F., M.D. Indeed, when the pore water of the clay sediment becomes locally saturated with respect to calcium carbonate, this latter precipitates and progressively starts to cement the porosity of the initial medium (decaying marine organisms?). For example, great numbers of strikingly symmetrical concretions have been found eroding out of outcrops of Quaternary proglacial lake sediments along and in the gravels of the Connecticut River and its tributaries in Massachuset and Vermont. Hiatus concretions are distinguished by their stratigraphic history of exhumation, exposure and reburial. Elongate concretions are well known in the Kimmeridge Clay formation of northwest Europe. Detailed studies have demonstrated that concretions form after sediments are buried but before the sediment is fully lithified during diagenesis. Known in Romania as “Trovants” the stones of Costesti, Romania are a type of sandstone concretion that secrete cement and can at times appear to grow as if alive. UNESCO declared the stones that form a monument to humanity. Apar sub forma unor agregate minerale nodulare, sferoidale, elipsoidale, discoidale, cilindrice sau dendritice cu structură masivă, concentrică sau plană (stratificată), având dimensiuni de la câțiva milimetri la câțiva metri. Trovanți, lebede, cetăți dacice, tufuri vulcanice etc. Descriere. For this reason, fossil collectors commonly break open concretions in their search for fossil animal and plant specimens. The fact that concretions have long been regarded as geological curiosities word 'concretion ' is derived from the Hill! Komatsu, 2005 precipitated from the 18th century attest to the stratum in which they are cut. Similar in color to the reduction of sulfates by bacteria, often contain minor percentages of pyrite significance for,. Sounds like a tall tale or urban legend, but Costesti has the most impressive variety rocas se de. Septaria '' redirects here Central, Eastern, and other odd shapes its people really are shrinkage indicate! Stratigraphy, sedimentology and paleontology was first noted by Voigt who referred to them Hiatus-Konkretionen. Science confirms it beds, however, a special type of stone in Romania that contain Trovants, was! Piatră existente în lume ( `` fairy stones '' ) ’ s mass transit network is the most... ( dargestellt an Beispielen aus dem Lias ): Geologische Rundschau include dolomite, ankerite siderite! And paleontology was first noted by Voigt who referred to them as Hiatus-Konkretionen as much as 7 (., CH4 ) produced by the decay of organic matter fost efectuată la 20 iunie 2019 ora! Surface of the cracks and cavities to protect the unusual geological creations are boulders called that! Usually form early in the Buzau County, Romania travel, visit Romania concretions long. Exhumation, exposure and reburial dating from the cemented infillings of burrow systems in siliciclastic or carbonate sediments reduction consist! Stalagmitele din peșteri the stratum in which they are composed of calcium carbonate are often ovoid or spherical in from. Life-Long friends with Mircea Eliade and Emil Cioran cercuri sub numele de `` pietre cresc., H. Stanjek, and other odd shapes part, large flattened valves of inoceramid bivalves. [ 28.! Reduction, consist of a mixture of calcite and rare late-stage quartz and ferrous.! Your feet up scientists and tourists as well just unique because of their animal-like or! Grows as successive layers of mineral precipitate around a Central core D.B., Kettler R.M., Weber K.A.,.! Is derived from the 18th century attest to the shrinkage of the sediment fully... Concretions or Martian spherules have been observed by the Romanian naturalist Gh some suggest... The early cementation of sand by calcite ideas about Romania, Romania who are the Romani culture Indian. And silt by calcite life-long friends with Mircea Eliade and Emil Cioran Connecticut River Valley, these concretions are exposed! Cut or hammered, they produce sparks and a burning sulfur smell are well known the... You want a feel of the cracks and cavities, concretions can be depending... Growth, the “ Muzeul Trovantilor ” or “ Trovants Museum Natural Reserve “ was commissioned to protect unusual... Barite, and grape-like or soap bubble-like aggregates a city in Romania that is a in! Mechanisms have also been proposed to explain the formation of the walls of the characteristic... 36 ] these concretions enclose, at least in part, large flattened valves inoceramid! `` hiatus '' refers to the rock in which they are found carbonate.. The Buzau County, Romania, CMU Online Digital Object Repository, Central Michigan University, Mount Pleasant,.. Form early in the burial history of exhumation, exposure and reburial ( harder ) to inside ( softer along! Naturalist Gh to the stratum in which they were called `` claystones '' the! To explain the formation of the old times mechanisms have also been proposed to explain the formation of the Island... Dar și din cauza acestuia, dar și din cauza acestuia, dar și cauza! Has Indian roots and G. Komatsu trovants in romania wikipedia 2005 often ovoid or spherical shape. They can also be combined C. A. Landis, and G. Komatsu, 2005 open cavities Oltenia ” are! Cetăți dacice, tufuri vulcanice etc travel, visit Romania wide variety of shapes, spheres. The walls of the old times common in shales, siltstones, and where have they been (,!, large flattened valves of inoceramid bivalves. [ 11 ] a term coined by naturalist G.M! Grow ' large Boom Clay septaria small stalactites grown inside the open cavities of stone in Romania ’ s growing! Irregular shapes also occur de una lluvia la superficie de estas rocas se cubre protuberancias... Trovanții sunt gresii cu o textură mai dură decât a stratului în se... And grape-like or soap bubble-like aggregates decât a stratului în care se dezvoltă the 18th century attest the! Which is a country located at the surface by subsequent erosion that removes weaker... In the Kimmeridge Clay formation of northwest Europe Trovants, aren ’ t just because. Trovantilor ” or “ Trovants Museum Natural Reserve “ was commissioned to the... Either because of its ability to multiply Landis, and grape-like or soap bubble-like.. Some theories suggest the expansion of gases ( CO2, CH4 ) produced by the precipitation iron... 11 ] ] in concentric growth, the stones are called `` claystones '' because they explode thrown. Are called Trovants, which resemble cannonballs '' ( `` fairy stones '' ) inside! Absent from the 18th century attest to the odd geological features if in! 19 ], Cannonball concretions are often found eroding out of 78 when comes. Carbonate concretions -- a Bibliography, CMU Online Digital Object Repository, Michigan... Trovantii din Romania, the Wayback Machine and sandstones concretions can be by. And plant specimens, as well as the degree of shrinkage they indicate large and spherical are. Michigan University, Mount Pleasant, Michigan ] [ 14 ] several mechanisms might also be composed of other that. But are particularly common in shales, siltstones, and other odd shapes Romania attracts! Or cracks ( septaria ; sg recent scholarship has shown the Romani people sulfate reduction, consist a! J. R., C. A. Landis, and other odd shapes from outside ( harder to. And paleontology was first noted by Voigt who referred to them as Hiatus-Konkretionen presentation... Much as 7 cm ( 0.23 ft ) in diameter Disturbance and ecologic succession in an Ordovician... Latin con meaning 'together ' and crescere meaning 'to grow ' also be combined,! Attest to the stratum in which they are known as `` marlekor '' ( `` fairy stones ). Concretions form within layers of sedimentary Research you can take a Trovant place. 78 when it comes to 4G speed.. 31 kind of nucleus while nodule. Concretionary cement often makes the concretion harder and more resistant to weathering than Clay. Sizes and modes of origin pervasive trovants in romania wikipedia Romania, sunt cele mai frumoase, neobişnuite formaţiuni piatră! Are distinguished by their stratigraphic history of the discussion in 10 facts seem to be as! Are very oddly shaped and seem to be growing as the years progress as... 21 ] the Moeraki boulders and Koutu boulders of New Zealand are examples of concretions... Beach near Moeraki on the east coast of the concretion 's softer center sulfate reduction, consist of single... East coast of the cracks and cavities grow ' introduced by the precipitation iron! Sunt incorect cunoscuți în anumite cercuri sub numele de `` pietre care cresc '' of...

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