Relevant bibliographies by topics / Travertino (Travertine)

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Academic literature on the topic 'Travertino (Travertine)'

Author: Grafiati
Published: 4 June 2021
Last updated: 6 February 2022

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Journal articles on the topic "Travertino (Travertine)"

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Pentecost, Allan, and Heather Viles. "A Review and Reassessment of Travertine Classification." Géographie physique et Quaternaire 48, no. 3 (November 23, 2007): 305–14. http://dx.doi.org/10.7202/033011ar.

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ABSTRACTThis paper provides a review of the classification of travertines with emphasis on their morphology. Three criteria are used to describe them: geochemistry, microfabric and morphology. Geochemically, travertines may be divided into two groups, the meteogene travertines, where the carrier carbon dioxide originates in the soil and epigean atmosphere, and the thermal (thermogene) travertines where the carbon dioxide comes from thermally generated sources. Many travertine fabrics are influenced by bacteria and plants. These include 'stromatolitic' forms, many oncoids, shrubs, tufts, mats and moss travertines. Morphologically, travertines are conveniently divided into autochthonous (spring mounds and ridges, cascades, barrages, fluvial and lacustrine crusts, paludal deposits and cemented rudites) and the allochthonous or clastic travertines (valley-fills, back-barrage deposits, alluvial cones). Travertine deposits often include a wide range of fabrics and morphologies in one system. They are influenced locally by discharge, slope, vegetation, climate and human activity. Intergradations occur, both within travertine types but also with other freshwater deposits, e.g. calcrete and lake chalk. The influence of travertine deposition on the local hydrology and geomorphology is also discussed. The review emphasises the significance of scale and hydrology and aims to provide a unified scheme of travertine classification.
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Roshanak, Reihaneh, Farid Moore, Alireza Zarasvandi, Behnam Keshavarzi, and Reinhard Gratzer. "Stable isotope geochemistry and petrography of the Qorveh–Takab travertines in northwest Iran." Austrian Journal of Earth Sciences 111, no. 1 (September 1, 2018): 64–74. http://dx.doi.org/10.17738/ajes.2018.0005.

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Abstract The Qorveh-Takab travertines, which are connected to thermal springs, are situated in the northwest of the Sanandaj- Sirjan metamorphic zone in Iran. In this study, the travertines were investigated applying petrography, mineralogy and isotope geochemistry. Oxygen and carbon isotope geochemistry, petrography, scanning electron microscopy (SEM) and X-ray powder diffraction (XRD) analysis were used to determine the source of the CO2 and the lithofacies and to classify the travertines. Isotope studies, morphological and mineralogical observations and distribution of travertines revealed that the travertines of the Qorveh-Takab could be of thermal water origin and, therefore, belong to the thermogene travertine category. These travertines are usually massive with mound-type morphology and are essentially found in regions with recent volcanic or high tectonic activity. The measured δ13C values of the travertines indicate that the δ13C of the CO2 released from the water during travertine deposition, while the source of the CO2 in the water springs seems to have been of crustal magmatic affinity. These travertines are divided into two lithofacies: (1) crystalline crust travertine and (2) pebbly (phytoclastic travertine with pebble- size extraclasts) travertine. δ18O and δ13C values of travertines are -0.6 to -11.9 (‰VPDB) and +6.08 to +9.84 (‰VPDB), respectively. A probable reason for the heavy carbon isotope content observed in these deposits is the presence of algae microorganisms, which was verified by SEM images. Fissure ridges, fluvial crusts with oncoids, and mound morphological features are observed in the study area. Based on the petrographic and SEM criteria, Qorveh-Takab travertines are classified into four groups: (1) compacted, (2) laminated, (3) iron-rich spring deposit and (4) aragonite-bearing travertines. Stable isotope compositions of Turkish travertines are largely similar to the travertines in the study area.
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Mas-Pla, Josep, Josep Trilla, and Maria Lluisa Valls. "Radiocarbon Dating of Travertines Precipitated from Freshwater." Radiocarbon 34, no. 3 (1992): 677–85. http://dx.doi.org/10.1017/s0033822200063967.

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We have studied the isotopic composition of recently precipitated travertines to determine the initial 14C activity of ancient travertine deposits. We found that the 14C activity of recent travertines of northeastern Spain was a function of the distance from the spring, resulting in variations in the initial 14C activity of the ancient travertine formations. We calculated the ancient travertine radiocarbon ages by using the ratio between the 14C activity of recent travertines and that of present atmospheric CO2 as the initial 14C activity.
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Blackwell, Bonnie, and H. P. Schwarcz. "U-Series Analyses of the Lower Travertine at Ehringsdorf, DDR." Quaternary Research 25, no. 2 (March 1986): 215–22. http://dx.doi.org/10.1016/0033-5894(86)90058-x.

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U-series analyses have been made of travertine samples from the archaeological site at Ehringsdorf-Weimar. The lower Travertine, in which hominid remains were found, yields apparent ages from >350,000 to 200,000 yr. Correlation between isotope ratios yields an age of about 230,000 yr. One sample of the upper Travertine gives and age of 111,000 ± 47,000 yr. Both upper and lower travertines contain fauna and flora indicative of interglacial conditions. The lower Travertine was deposited during isotope stage 7, while the upper Travertine may have been formed during isotope stage 5. This contradicts most earlier biostratigraphic studies which assigned both lower and upper Travertines to stages of the Eem interglaciation (correlative with isotope stage 5). The fauna and flora of the lower Travertine are significantly different from those of the upper Travertine, however, and in some respects are transitional to those of the travertines of Bilzingsleben, which appear to be older yet.
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Guerra-Merchán, Antonio, Francisco Serrano, José M. García-Aguilar, José E. Ortiz, Trinidad Torres, and Yolanda Sánchez-Palencia. "Development of Quaternary travertines in the carbonate mountains of the western Costa del Sol, Málaga, southern Spain." Quaternary Research 92, no. 1 (March 14, 2019): 183–200. http://dx.doi.org/10.1017/qua.2018.128.

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AbstractThe predominantly carbonate nature of the mountains near the coast of Málaga and Marbella (Costa del Sol, southern Spain) and the presence of springs have favored the formation of travertine buildups during the Quaternary. The geomorphic characteristics of the slopes and the location of the springs have determined the development of three types of travertine growths: (1) spring travertines, located preferentially on the south mountainside, where the slope is steepest; (2) pool-dam-cascade travertines, which form along the north and east edges, far from the carbonate relief and with a gentler slope; and (3) river-valley travertines, formed in the courses of the springs of any sector. Field observations combined with new amino acid racemization (AAR) dating of Helicidae gastropods show that most of the travertine formations are polyphasic and that their development was interrupted by stages of erosion and incision. Five stages of travertine development are evident, most of which are related to warm, moist episodes corresponding to marine oxygen isotope stages (MIS) 7, 5, 3, and 1, although local travertine growth also occurred during MIS 6 and during the transition from MIS 3 to 2.
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Pentecost, Allan. "Cyanobacteria associated with hot spring travertines." Canadian Journal of Earth Sciences 40, no. 11 (November 1, 2003): 1447–57. http://dx.doi.org/10.1139/e03-075.

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Cyanobacteria are the major oxygenic photosynthetic microorganisms of hot spring travertines. This review describes the known cyanobacterium flora of travertine-depositing waters > 37 °C. The communities develop either upon (epilithon) or within (endolithon) the travertine surface, where they may influence the travertine fabric by providing nucleation sites for calcium carbonate. Mat photosynthesis locally increases the amount of travertine deposited, but the importance of photosynthesis in travertine deposition is rarely significant because the main loss of CO2is by atmospheric evasion of the hot, CO2-rich waters. The Oscillatoriales are the most important group of cyanobacteria in terms of their biomass, but the taxonomy of the order is in a state of chaos. Molecular methods will ultimately disclose the true affinities of the organisms but, at present, the use of form-taxa based upon morphological characters provides a practical alternative. Identification of fossilized cyanobacteria is problematic since few of the key characters survive as fossils. The known cyanobacterium flora is tabulated and an analytical key provided to identify the form-taxa of hot spring travertines.
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Valero-Garcés, Blas L., Concha Arenas, and Antonio Delgado-Huertas. "Depositional environments of Quaternary lacustrine travertines and stromatolites from high-altitude Andean lakes, northwestern Argentina." Canadian Journal of Earth Sciences 38, no. 8 (August 1, 2001): 1263–83. http://dx.doi.org/10.1139/e01-014.

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Four distinctive depositional subenvironments of fossil travertines and stromatolites are identified in three high-altitude (3500–4000 m above sea level) lacustrine basins: El Peinado, San Francisco (Las Coladas Salar subbasin), and Las Peladas (southern Andean Altiplano, northwestern Argentina). These late Quaternary occurrences are characterized using geomorphological, sedimentological, petrographic, and stable isotopic data. Stromatolites of cyanobacterial origin only develop in shallow lacustrine margins of El Peinado basin. In the same basin, macrophytic travertines occur both near thermal spring seepage areas along the lake margin as in situ facies and in littoral lacustrine environments up to water depths of several metres as phytoclastic travertine facies. The stromatolites and macrophytic travertines have relatively heavy δ18O compositions, suggesting initial 16O-depleted waters and (or) evaporation effects through time. Their high δ13C compositions are interpreted as a reflection of intense CO2 evasion from the thermal groundwaters feeding the lakes. Similar laminated travertine facies, with no petrographic evidence for biotic origin, occur in both Las Coladas and Las Peladas basins. Neither petrographic nor isotopic data alone can differentiate between these two cases. Besides, diagenetic overprint in Las Peladas facies precludes the use of isotopic values as original isotopic signatures. However, the depositional environmental conditions defined by the geomorphological and sedimentological features are different. Laminated aragonitic crusts in Las Coladas basin formed in a shallow, saline lake and are associated with shoreline and terrace deposits cemented by aragonite. These travertine crusts represent periods of spring, 16O-rich discharge to the lake, as suggested by the lighter oxygen isotopic compositions. In contrast, travertines from Las Peladas occur as laminated calcitic and aragonitic units intercalated at the top of fining-upward sequences composed of conglomerates, sandstones, and intraclastic limestones. Sedimentological data suggest that these travertines originated in fluvial-influenced lake margins during low lake-level episodes.
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Drysdale, Russell N. "Factors controlling the hydrochemistry of Louie Creek, a travertine-depositing stream in the seasonally wet tropics of northern Australia." Marine and Freshwater Research 52, no. 5 (2001): 793. http://dx.doi.org/10.1071/mf00117.

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Relationships among wet-season recharge, hydrochemistry and the distribution of travertines at Louie Creek were investigated from water samples collected during four campaigns between April 1993 and November 1997. pH, temperature and major cation and anion data reveal that the springs feeding the creek rise with high concentrations of CO2 and dissolved calcium carbonate. The pattern of downstream changes in hydrochemistry was similar during each campaign: rapid outgassing of CO2 over the ˜1.3 km of surface flow increases calcite saturation, triggering extensive travertine deposition over ˜1.5 km. At low discharge, the creek sinks then re-emerges at the downstream limit of travertine deposition in a more CO2-rich state. Together with a low stream gradient and high magnesium concentrations, this chemical change arrests the evolution of the waters and inhibits further accumulation of travertine downstream. Significant wet-season recharge dilutes spring water concentrations and retards their downstream evolution, resulting in a downstream shift of the reach of deposition. Following a wet season of low magnitude, the spring waters rise with higher concentrations of dissolved carbonate and evolve to a supersaturated state over a shorter distance. This results in an upstream migration of the travertine reach. These results have significance for the interpretation of fossil Quaternary travertines at Louie Creek.
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Umar, Emi Prasetyawati, and Jamaluddin . "KARAKTERISTIK ENDAPAN SINTER TRAVERTIN PANAS BUMI BARASANGA KABUPATEN KONAWE UTARA, SULAWESI TENGGARA." JURNAL GEOCELEBES 2, no. 2 (October 22, 2018): 64. http://dx.doi.org/10.20956/geocelebes.v2i2.4830.

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Daerah Barasanga menunjukkan manifestasi panasbumi berupa mataair panas dan endapan travertin. Travertin merupakan batuan karbonat yang terbentuk di darat akibat pelepasan CO2 dari air jenuh kalsium karbonat. Travertin memiliki banyak aplikasi namun di Indonesia belum banyak dipelajari. Penelitian ini dilakukan dengan cara observasi lapangan secara langsung, kemudian data yang telah diambil dari lapangan dianalisis menggunakan analisis petrografi. Air hidrothermal naik ke permukaan melalui rekahan yang dibentuk sesar, dan melewati batuan samping berupa marls dan batugamping tersebut. Ketika mencapai ke permukaan, CO2 lepas dan tingkat kelarutan semakin rendah sehingga pengendapan travertin terjadi. Hasil penelitian menunjukkan bahwa tipe dan jenis travertin pada mataair panas di daerah penelitian termasuk ke dalam jenis Incoherent Travertines.
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Pentecost, Allan. "The formation of travertine shrubs: Mammoth Hot Springs, Wyoming." Geological Magazine 127, no. 2 (March 1990): 159–68. http://dx.doi.org/10.1017/s0016756800013844.

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AbstractThe structure and microbiology of active travertines is described from Canary and Minerva springs, with emphasis on ‘shrubs’ growing in terracette pools. These dendritic growths of aragonite consist of intricately branched sprays containing thousands of radiating needles. Shrub microstructure could be explained by the principle of ‘Keimauslese” and the preferential elongation of sharp protuberances in a rapidly depositing environment.The shrubs, and other active travertines, contain unicellular and filamentous bacteria. Estimates of total bacteria numbers ranged from 0.6−1.7 × 105 mm−3 but biomass was low, and always less than 1% of the travertine by weight. No evidence was found to indicate that bacteria played a role in shrub growth or morphology, but crystal trapping on bacterial strings may influence travertine fabrics on cascades. The shrubs are considered to have developed by inorganic processes, in hot spring waters supersaturated with aragonite.
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Dissertations / Theses on the topic "Travertino (Travertine)"

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Fleurent, Léonora. "Mécanismes d’enregistrement géochimique liés à des processus cinétiques au moment de la précipitation des travertins." Thesis, Université Paris-Saclay (ComUE), 2015. http://www.theses.fr/2015SACLS204/document.

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Si la relation entre l’enregistrement géochimique au sein de ces travertins et les paramètres environnementaux semble admise, le détail des processus, notamment cinétique et dégazage, ainsi que leur poids respectifs dans les reconstitutions paléoenvironnementales ne sont clairement établis. Afin de mieux contraindre ces processus, un travail minutieux de reconnaissance des mécanismes de précipitation et d’enregistrement de la signature géochimique a été effectué sur les travertins –récents et fossiles- d’une source carbogazeuse située dans le Massif Central (France). Il couple expériences de laboratoire innovantes et travail sérié sur le terrain.Le taux de dégazage du CO2 dans les sources carbogazeuses est l’un des facteurs principaux conduisant aux conditions de précipitation via la modulation du taux de précipitation de la calcite et par conséquent, sa composition en 18O et 13C. Les tests en laboratoire ont été conduits en deux étapes : (1) caractérisation des mécanismes de dégazage seuls, et (2) des expériences combinant dégazage et précipitation pour mieux appréhender les processus cinétiques lors de la précipitation des travertins. En parallèle, un travail de terrain spécifique par pose de plaques de plexiglas le long de différents écoulement de la source, nous a permis de connaitre la résolution de précipitation des travertins et d’obtenir une meilleure estimation des facteurs de fractionnement.Les tests en laboratoire confirment que, lors d’un dégazage important, i.e. conduisant à la précipitation de travertins, la spéciation des espèces du carbone inorganique dissout (CID) et les flux entre ces espèces sont des paramètres primordiaux à considérer. Le facteur de fractionnementεDIC-CO2(g) qui dépend du pH suit alors une distillation de Rayleigh dans un système cinétique. Les évolutions des espèces carbonées en solution ont ainsi pu être modélisées à l’aide d’une équation de diffusion faisant intervenir les paramètres propres à l’expérience.Les résultats de terrain permettent de démontrer que les variations de conditions de précipitation sont principalement dues aux variations de conditions hydrodynamiques et, secondairement, aux variations de température, ce qui a pu être modélisé à l’aide de l’équation définie par Plummer en 1968 et qui a montré la variabilité des conditions de précipitation in-situ. Dans le cas des expériences de précipitation en laboratoire et par comparaison avec les données de terrain, le facteur de fractionnement εCID-calcite va dépendre des concentrations de chaque espèce de CID mais aussi de la partition du carbone entre phase gaz et phase solide. Pour l’oxygène 18, de 0°C à 10°C, les résultats acquis sur les travertins actuels nous ont permis d’utiliser la droite définie récemment par Coplen (2007) pour lier de façon fiable la température au moment de la précipitation et le facteur de fractionnement. Toutefois, pour des températures plus élevées, le facteur de fractionnement est plus important que ce qu’il devrait et confirmant ainsi la non-représentativité des droites de Coplen pour la détermination de la température de précipitation. Lors des expériences de précipitation la tendance est inverse à celle observée pour les travertins confirmant l’influence de la vitesse de dégazage et de l’indice de saturation sur le fractionnement isotopique. Nous avons également confirmé avec les expérimentations, l’impact de la vitesse de précipitation sur les teneurs isotopiques enregistrées dans les travertins.Ce travail a mis en lumière des mécanismes cinétiques complexes et qui ne sont pas complètement contraints par la seule utilisation des outils isotopiques. L’utilisation du partitionnement des éléments traces est un outil primordial pour appuyer l’étude de ces mécanismes
The response of continental groundwater systems to recent climate fluctuations can be reconstructed via the continuous measurement of groundwater level, spring flow and climatic chronicles. When any data exist, recent reconstructions of groundwater dynamics may be reached through various recorders of environmental and hydrological conditions such as travertine. Although the relationship between geochemical records in travertine and environmental parameters seems to be accepted, the details of processes and their respective weight in the paleo-information are not clearly established.Rate of CO2 degassing in CO2-rich spring likely influences calcite precipitation rate and the related δ18O and δ13C composition. Isotopic equilibrium is rarely maintained during travertine deposition and the degassing rate is the main controlling factor of the disequilibrium. Due to the lack of knowledge, fractionation processes, either kinetic or equilibrium, occurring between CO2-rich water, gas and travertine required specific pH and temperature-controlled laboratory tests. These tests were conducted on synthetic water at different pH to focus only on the degassing processes. Other tests were conducted on trace elements partitioning during calcite precipitation, to identify the origin of isotopic signature variability, and to constraint the way of recording past conditions.All these tests confirmed that during a degassing leading to travertine precipitation, the speciation of dissolved inorganic carbon species is a major parameter to be tackled since a linear relationship between εDIC-CO2(g) and pH is observed. Indeed, we highlighted that for a high degassing rate, the isotopic equilibrium is not reached because the reaction greater involves light isotopes than heavy ones. There is thus different reaction rate between the species of dissolved inorganic carbon, the reactions occurring faster in the water than the one between water and gas, the latter being controlled by diffusion
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Silva, Victor de Albuquerque. "Proposta metodol?gica para o imageamento digital e modelagem virtual 3d de um bloco de rochas travertinas." Universidade Federal do Rio Grande do Norte, 2013. http://repositorio.ufrn.br:8080/jspui/handle/123456789/18836.

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In this paper we present the methodological procedures involved in the digital imaging in mesoscale of a block of travertines rock of quaternary age, originating from the city of Acquasanta, located in the Apennines, Italy. This rocky block, called T-Block, was stored in the courtyard of the Laborat?rio Experimental Petr?leo "Kelsen Valente" (LabPetro), of Universidade Estadual de Campinas (UNICAMP), so that from it were performed Scientific studies, mainly for research groups universities and research centers working in brazilian areas of reservoir characterization and 3D digital imaging. The purpose of this work is the development of a Model Solid Digital, from the use of non-invasive techniques of digital 3D imaging of internal and external surfaces of the T-Block. For the imaging of the external surfaces technology has been used LIDAR (Light Detection and Range) and the imaging surface Interior was done using Ground Penetrating Radar (GPR), moreover, profiles were obtained with a Gamma Ray Gamae-spect?metro laptop. The goal of 3D digital imaging involved the identification and parameterization of surface geological and sedimentary facies that could represent heterogeneities depositional mesoscale, based on study of a block rocky with dimensions of approximately 1.60 m x 1.60 m x 2.70 m. The data acquired by means of terrestrial laser scanner made available georeferenced spatial information of the surface of the block (X, Y, Z), and varying the intensity values of the return laser beam and high resolution RGB data (3 mm x 3 mm), total points acquired 28,505,106. This information was used as an aid in the interpretation of radargrams and are ready to be displayed in rooms virtual reality. With the GPR was obtained 15 profiles of 2.3 m and 2 3D grids, each with 24 sections horizontal of 1.3 and 14 m vertical sections of 2.3 m, both the Antenna 900 MHz to about 2600 MHz antenna. Finally, the use of GPR associated with Laser Scanner enabled the identification and 3D mapping of 3 different radarf?cies which were correlated with three sedimentary facies as had been defined at the outset. The 6 profiles showed gamma a low amplitude variation in the values of radioactivity. This is likely due to the fact of the sedimentary layers profiled have the same mineralogical composition, being composed by carbonate sediments, with no clay in siliciclastic pellitic layers or other mineral carrier elements radioactive
Nesse trabalho s?o apresentados os procedimentos metodol?gicos envolvidos no imageamento digital em mesoescala de um bloco de rochas travertinas de idade quatern?ria, oriundas da cidade de Acquasanta, situada na cordilheira dos Apeninos, na It?lia. Esse bloco rochoso, denominado de T-Block, foi armazenado no p?tio do Laborat?rio Experimental de Petr?leo "Kelsen Valente" (LabPetro), da Universidade Estadual de Campinas (UNICAMP) para que a partir dele fossem realizados estudos cient?ficos, principalmente para grupos de pesquisa das universidades e centros de pesquisa brasileiros que atuam nas ?reas de caracteriza??o de reservat?rio e imageamento digital 3D. A proposta deste trabalho consiste na elabora??o de um Modelo de S?lido Digital, a partir da utiliza??o de t?cnicas n?o-invasivas de imageamento digital 3D das superf?cies interna e externa do T-Block. Para o imageamento das superf?cies externas foi utilizada a tecnologia LIDAR (Light Detection and Range) e para o imageamento das superf?cies internas foi feita a utiliza??o do Ground Penetrating Radar (GPR), al?m disso, foram adquiridos perfis de Gamma Ray com um Gamaespect?metro port?til. O objetivo do imageamento digital 3D consistiu na identifica??o e parametriza??o de superf?cies geol?gicas e de f?cies sedimentares que pudessem representar heterogeneidades deposicionais em mesoescala, tomando como base de estudo um bloco rochoso com dimens?es de aproximadamente 1,60m x 1,60m x 2,70 m. Os dados adquiridos por meio do Laser Scanner terrestre disponibilizaram informa??es espaciais georreferenciadas da superf?cie do bloco (X, Y, Z), al?m de valores de varia??o de intensidade de retorno do raio laser e dados RGB com alta resolu??o (3 mm x 3 mm), totalizando 28.505.106 pontos adquiridos. Essas informa??es foram utilizadas como auxilio durante a interpreta??o dos radargramas e est?o prontas para ser exibidas em salas de realidade virtual. Com o GPR, foram adquiridos 15 perfis de 2,3 m e 2 grids 3D, cada um com 24 se??es horizontais de 1,3 m e 14 se??es verticais de 2,3 m, tanto com a antena de 900 MHz quanto com a antena de 2600 MHz. Por fim, o uso do GPR associado ao Laser Scanner possibilitou a identifica??o e mapeamento 3D de 3 radarf?cies distintas as quais foram correlacionadas a 3 f?cies sedimentares j? que j? haviam sido definidas no inicio do trabalho. Os 6 perfis de raios gama mostraram uma baixa varia??o na amplitude dos valores de radioatividade. Provavelmente, isso ocorreu devido ao fato das camadas sedimentares perfiladas possu?rem a mesma composi??o mineral?gica, sendo compostas por sedimentos carbon?ticos, com aus?ncia de argila silicicl?stica nas camadas mais pel?ticas ou de outro mineral portador de elementos radioativos
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Pechová, Riedlová Mária. "RADNICE - VĚC VEŘEJNÁ, Správní centrum městské části Brno-sever." Master's thesis, Vysoké učení technické v Brně. Fakulta architektury, 2015. http://www.nusl.cz/ntk/nusl-216159.

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The aim of the work was to design a town hall for Brno city, burrough Sever. Currently, the location is separated from public life by a high wall. What is more, it does not match the style of surrounding buildings. The proposed town hall design strives to revive the location. It uses one of the three existing buildings built in 1920. The building is proposed to be rennovated and extended by a new modern architectonic object. This way, the whole complex would naturally fit into the original structure. The location of the town hall merges the historic with the modern introducing new values into the place.
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Overby, Steven T., and Daniel G. Neary. "Travertine Geomorphology of Fossil Creek." Arizona-Nevada Academy of Science, 1996. http://hdl.handle.net/10150/296999.

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Frery, Emanuelle. "Circulation épisodique de fluides réactifs le long de failles de l'échelle de travertins à celle de bassins, sur l'exemple du plateau du Colorado (USA)." Phd thesis, Université de Grenoble, 2012. http://tel.archives-ouvertes.fr/tel-00864036.

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Cette thèse s'attache à caractériser l'évolution dans le temps et l'espace des circulations de fluides le long des failles. Une approche multidisciplinaire et multi-échelle a été mise en place sur un exemple naturel dans la région du plateau du Colorado (Utah): du terrain à la modélisation et de la proche-surface au bassin. L'étude des minéralisations en proche surface et leur lien avec le transfert le long des failles a été effectuée sur des travertins récents. L'analyse isotopique et la datation U/Th des veines de travertins révèle des cycles de circulation de fluides enrichis en CO2 et de précipitation épisodiques de carbonates de calcium (travertin) correspondant à des cycles saisonniers ou climatiques (annuels et centennals) ainsi qu'à des cycles qui s'apparentent à des cycles sismiques de l'ordre du millier d'années. Ces données permettent de calibrer le volume de CO2 qui a fuit par la faille. Des zones de paléo-circulation, témoins de l'activité des failles sur le long-terme, sont observées sous forme de blanchiment chimique ("bleaching") des grès à l'affleurement, et ont été étudiées à l'échelle du bassin. Deux épisodes principaux de circulation de fluides le long des failles ont été distingués : une première circulation durant l'enfouissement maximum puis une seconde circulation le long des réservoirs et des failles, qui est reliée à des phénomènes tectoniques régionaux, compemporains de la remontée du Plateau du Colorado. La dernière circulation s'est découpée en plusieurs pulses avec des circulations de fluides de différente nature (tels que des saumures, des fluides riches en hydrocarbures ou en CO2) au cours du temps et le long des failles.
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Hoffmann, Frédéric. "Les tufs et travertins en Périgord-Quercy /." [Pessac] : [Presses universitaires de Bordeaux], 2005. http://catalogue.bnf.fr/ark:/12148/cb40117766d.

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HUILLCA, CARLOS ALBERTO LUZA. "EXPERIMENTAL STUDY OF THE GEOMECHANICAL BEHAVIOR OF TRAVERTINE." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2014. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=24637@1.

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PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO
COORDENAÇÃO DE APERFEIÇOAMENTO DO PESSOAL DE ENSINO SUPERIOR
PROGRAMA DE EXCELENCIA ACADEMICA
O Travertino é uma rocha amplamente usada no mundo como rocha ornamental, mas suas propriedades petrológicas e mecânicas análogas a rochas carbonáticas de reservatório influenciaram em sua escolha para a compreensão do comportamento geomecânico destas formações. Neste sentido, este trabalho procurou analisar o comportamento geomecânico do Travertino Romano mediante um programa experimental que incluiu uma caracterização da petrologia, da estrutura porosa e do comportamento mecânico da rocha. Foi determinada sua estrutura e textura sedimentar, composição química, mineralógica e índices físicos. Além disso, sua complexa estrutura porosa foi caracterizada por análise de imagens 2D e 3D geradas no microscópio óptico e no micro-tomógrafo de raios-X, com a determinação da presença de macro e micro poros, distribuídos aleatoriamente na rocha com uma baixa conectividade, assim mesmo foi também estabelecida uma relação entre a porosidade e a resistência. Analisaram-se também os resultados dos ensaios de resistência mecânica, que tanto para o estado de tensão uniaxial como triaxial mostraram um decréscimo da resistência com o incremento da porosidade, apresentando um comportamento frágil na maioria dos casos.
The Travertine is a rock widely used in the world as an ornamental rock, but their analogous petrological and mechanical properties to carbonate rocks of reservoir influenced his choice to be able to understand the geomechanical behavior of these formations. Thus, this study sought to analyze the geomechanical behavior of Roman Travertine through an experimental program that included a characterization of petrology, the porous structure and mechanical behavior of the rock. Sedimentary structure and texture, chemical, mineralogical composition and physical indexes was determined. Moreover, Its complex porous structure was characterized by analysis of 2D and 3D images generated in the optical microscope and X-Ray micro CT-scanner, with the determination of the presence of macro and micro pores, randomly distributed in the rock with a low connectivity, so it was also established a relationship between the porosity and strength. Also analyzed the test results of mechanical strength, both to the state of uniaxial to triaxial stress showed a decrease in resistance with increasing porosity, with a brittle behavior in most cases.
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Lopez, Benjamin. "Architecture et distribution des systemes carbonatés se développant autour des sources hydrothermales : cas d’étude du basin de Denizli (Turquie), de la region de Rapolano (Italie) et de Mammoth Hot Springs (Wyoming, USA)." Thesis, Aix-Marseille, 2015. http://www.theses.fr/2015AIXM4326.

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Les carbonates de sources hydrothermales (ou Geothermal Spring Carbonate, GSC) sont des systèmes carbonatés qui se développent autour de sources dont les eaux ont circulé en profondeur et sont remontées le long de failles perméables. Leur développement est contrôlé en tout premier lieu par la nature des eaux souterraines auxquelles ils sont liés. La formation de ces carbonates dépend d’interactions complexes entre les processus hydrologiques, tectoniques et structuraux se produisant avant l’émergence. Par la suite, la sédimentation est régie par de nombreux processus résultant des variations hydrologiques et chimiques de l’eau ainsi que par l’activité biologique. Du fait des interactions complexes entre ces facteurs, la sédimentation est sensible à de faible variations environnementales et il en résulte ainsi un grand nombre d’environnement de dépôts et de lithofacies.Le but de cette étude est d’améliorer les connaissances et les concepts fondamentaux propres au développement des carbonates de sources hydrothermales (GSC). Pour cela, elle s’appuie principalement sur l’examen des faciès que ce soit à petite échelle, comme l’observation des microstructures (microfabrics), ou à grande échelle, comme leur agencement en trois dimensions. De tels examens ont été effectués dans des sites hydrothermaux où ces carbonates se sont développés au cours du Quaternaire (région de Rapolano en Italie, bassin de Denizli en Turquie ou encore le Parc du Yellowstone dans le Wyoming, USA)
Geothermal spring carbonate (GSC) corresponds to a complex carbonate system formed around carbonate-rich springs fed by rising groundwaters along permeable fault zones. Their development is mainly controlled by the nature of springwaters emerging above water table. Therefore carbonate deposition is, in this setting, intimately related to complex interactions between hydrological, tectonic and structural processes occurring prior to water emergence. Moreover, carbonate sedimentation from springwater results from sedimentary processes controlled by complex interactions between hydrological, chemical characteristics and biological activity. Such processes are sensitive to slight environmental variations and thus lead to a large spectrum of lithofacies and ecosystems.The aim of this study is to improve knowledge and fundamental concepts regarding development of geothermal spring carbonates. For that purpose, lithofacies investigation, from microfabrics at micro-scale to 3-dimensional configuration at field-scale, is considered as an essential tool. Such investigations had been carried out in sites where Quaternary and actively forming GSCs were abundant (e.g. Rapolano region, Italy, Denizli Basin, Turkey and Yellowstone National Park, Wyoming, USA)
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Chalmers, Rhona Mary Lindsay. "Neotectonic fracturing associated with Quaternary Travertines." Thesis, University of Bristol, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.265417.

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Kamradt, Ivonne. "Die thüringischen Travertine Verbreitung und Genese am Beispiel ausgewählter Vorkommen." Aachen Shaker, 2009. http://d-nb.info/999440195/04.

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Books on the topic "Travertino (Travertine)"

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Travertino di Siena: Sienese travertine. Firenze: Alinea, 2010.

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Di terra e di pietra: Culture del lavoro e industria del travertino a Rapolano Terme. Grosseto: Effigi, 2012.

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Kano, Akihiro, Tomoyo Okumura, Chizuru Takashima, and Fumito Shiraishi. Geomicrobiological Properties and Processes of Travertine. Singapore: Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-13-1337-0.

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Wenzel, Stefan. Die Funde aus dem Travertin von Stuttgart-Untertürkheim und die Archäologie der letzten Warmzeit in Mitteleuropa. Bonn: R. Habelt, 1998.

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Szabo, B. J. Paleoclimatic, paleohydrologic and tectonic applications of uranium-series dating of travertine and calcite vein samples from southern Great Basin and Grand Canyon areas. [Denver, CO]: U.S. Geological Survey, 1995.

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Derevi︠a︡nko, A. P. Rannepaleoliticheskie mikroindustrialʹnye kompleksy v travertinakh i︠u︡zhnogo Kazakhstana. Novosibirsk: [Izd-vo In-ta arkheologii i ėtnografii SO RAN], 2000.

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Lands, Montana Department of State. Environmental assessment for a proposed quarry expansion by Livingston Marble and Granite Corp. Helena, Mont: Dept. of State Lands, 1992.

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Lands, Montana Department of State. [Environmental assessment evaluating actions at the Livingston Marble and Granite Works involving accessing the Gold Quarry waste rock dump by a new road]. Helena, Mont: Dept. of State Lands, 1994.

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Eberhard, Wagner. Canstatt. Stuttgart: Kommissionsverlag K. Theiss, 1995.

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Schatz, Kristine. Cannstatt. Stuttgart: Kommissionsverlag K. Theiss, 2007.

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Book chapters on the topic "Travertino (Travertine)"

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Kano, Akihiro, Tomoyo Okumura, Chizuru Takashima, and Fumito Shiraishi. "Sedimentology of Travertine." In Geomicrobiological Properties and Processes of Travertine, 43–66. Singapore: Springer Singapore, 2018. http://dx.doi.org/10.1007/978-981-13-1337-0_3.

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Kano, Akihiro, Tomoyo Okumura, Chizuru Takashima, and Fumito Shiraishi. "Travertines in Japan." In Geomicrobiological Properties and Processes of Travertine, 133–73. Singapore: Springer Singapore, 2018. http://dx.doi.org/10.1007/978-981-13-1337-0_7.

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Kano, Akihiro, Tomoyo Okumura, Chizuru Takashima, and Fumito Shiraishi. "Introduction." In Geomicrobiological Properties and Processes of Travertine, 1–7. Singapore: Springer Singapore, 2018. http://dx.doi.org/10.1007/978-981-13-1337-0_1.

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Kano, Akihiro, Tomoyo Okumura, Chizuru Takashima, and Fumito Shiraishi. "Basic Knowledge of Geochemical Processes." In Geomicrobiological Properties and Processes of Travertine, 9–41. Singapore: Springer Singapore, 2018. http://dx.doi.org/10.1007/978-981-13-1337-0_2.

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Kano, Akihiro, Tomoyo Okumura, Chizuru Takashima, and Fumito Shiraishi. "Methods." In Geomicrobiological Properties and Processes of Travertine, 67–88. Singapore: Springer Singapore, 2018. http://dx.doi.org/10.1007/978-981-13-1337-0_4.

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Kano, Akihiro, Tomoyo Okumura, Chizuru Takashima, and Fumito Shiraishi. "Geomicrobiological Processes for Laminated Textures." In Geomicrobiological Properties and Processes of Travertine, 89–111. Singapore: Springer Singapore, 2018. http://dx.doi.org/10.1007/978-981-13-1337-0_5.

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Kano, Akihiro, Tomoyo Okumura, Chizuru Takashima, and Fumito Shiraishi. "Geochemical Model for Rapid Carbonate Precipitation of Travertines." In Geomicrobiological Properties and Processes of Travertine, 113–31. Singapore: Springer Singapore, 2018. http://dx.doi.org/10.1007/978-981-13-1337-0_6.

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Kano, Akihiro, Tomoyo Okumura, Chizuru Takashima, and Fumito Shiraishi. "Concluding Remarks." In Geomicrobiological Properties and Processes of Travertine, 175–76. Singapore: Springer Singapore, 2018. http://dx.doi.org/10.1007/978-981-13-1337-0_8.

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Benkhard, Borbála. "Travertine Mound of Egerszalók: The Hungarian Pamukkale." In World Geomorphological Landscapes, 201–7. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-08997-3_23.

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Wang, F., F. Dong, X. Zhao, Q. Dai, Q. Li, Y. Luo, and S. Deng. "Calcite Mineral Generation in Cold-Water Travertine Huanglong, China." In Springer Proceedings in Earth and Environmental Sciences, 463–65. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-22974-0_114.

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Conference papers on the topic "Travertino (Travertine)"

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Djurić, Bojan, Sándor Kele, and Igor Rižnar. "The Budakalász Travertine Production." In XI International Conference of ASMOSIA. University of Split, Arts Academy in Split; University of Split, Faculty of Civil Engineering, Architecture and Geodesy, 2018. http://dx.doi.org/10.31534/xi.asmosia.2015/03.04.

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Semenova, N. M., A. M. Sokolov, N. M. Moiseev, T. M. Ganiev, and Т. S. Otcheskaya. "THE SOME RESULTS OF THE RESEARCH OF THE NATURE MONUMENT «SUKHORECHENSKIYE CUPS» IN THE VICINITY OF TOMSK CITY." In Prirodopol'zovanie i ohrana prirody: Ohrana pamjatnikov prirody, biologicheskogo i landshaftnogo raznoobrazija Tomskogo Priob'ja i drugih regionov Rossii. Izdatel'stvo Tomskogo gosudarstvennogo universiteta, 2020. http://dx.doi.org/10.17223/978-5-94621-954-9-2020-20.

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Some results of the study of lime caps in the Ushayka river basin near the village of Sukhorechye are presented. The morphometric features of travertine springs are considered. The need for special protection of the Sukhorechenskiye caps is determined.
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DE SOLE, P., R. FRESU, C. ROSSI, M. L. GOZZO, E. GAMMAROTA, S. SPADARO, M. SERRA, and F. MORMILE. "WHOLE BLOOD CHEMILUMINESENCE IN TRAVERTINE WORKERS." In Bioluminescence and Chemiluminescence - Progress and Current Applications - 12th International Symposium on Bioluminescence (BL) and Chemiluminescence (CL). WORLD SCIENTIFIC, 2002. http://dx.doi.org/10.1142/9789812776624_0054.

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Metlek, Sedat, Bayram Cetisli, and Ahmet Fatih Senel. "Classification of travertine plates with image processing." In 2015 23th Signal Processing and Communications Applications Conference (SIU). IEEE, 2015. http://dx.doi.org/10.1109/siu.2015.7130129.

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Ricketts, Jason W., Lin Ma, Amy E. Wagler, and Victor H. Garcia. "GLOBAL TRAVERTINE DEPOSITION MODULATED BY OSCILLATIONS IN CLIMATE." In GSA Annual Meeting in Phoenix, Arizona, USA - 2019. Geological Society of America, 2019. http://dx.doi.org/10.1130/abs/2019am-336795.

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Drayton, D., and Q. Fisher. "The Impact of Faults on Fluid Flow in Travertine." In Fifth International Conference on Fault and Top Seals. European Association of Geoscientists & Engineers, 2019. http://dx.doi.org/10.3997/2214-4609.201902352.

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V. Lihaciu, A., and C. E. Panaiotu. "Geochemical Approach on the Travertine Deposits from Geoagiu and Carpinis (Romania)." In 73rd EAGE Conference and Exhibition incorporating SPE EUROPEC 2011. Netherlands: EAGE Publications BV, 2011. http://dx.doi.org/10.3997/2214-4609.20149698.

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Akkurt, İskender, and Kadir Günoğlu. "Gamma-ray shielding properties of some travertines in Turkey." In 2ND INTERNATIONAL ADVANCES IN APPLIED PHYSICS AND MATERIALS SCIENCE CONGRESS. AIP, 2012. http://dx.doi.org/10.1063/1.4751602.

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Ryapolova, Julia, E. V. Deev, E. V. Sokol, S. N. Koch, and G. G. Rusanov. "Quaternary travertine Kurai fault zone (Gorny Altai): lithotypes, petrographic and geochemical characteristics." In Geological and geophysical environment and the various manifestations of seismicity. LJournal, 2015. http://dx.doi.org/10.18411/svfu1230915-03.

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Abadi, Mohammad Shams Esfand, and Navid Banihashemi. "Automatic classification of travertine stones based on sum and difference histograms algorithm." In 2015 9th Iranian Conference on Machine Vision and Image Processing (MVIP). IEEE, 2015. http://dx.doi.org/10.1109/iranianmvip.2015.7397521.

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