Bibliographies thématiques / Trachite

Littérature scientifique sur le sujet « Trachite »

Auteur : Grafiati
Publié le 10 mars 2023

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Articles de revues sur le sujet "Trachite"

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Nurhawaisyah, S. R., N. Jafar, S. Bakri, A. Artiningsih et S. Widodo. « A petrographic study of bauxite of Kenco area, Landak District, West Kalimantan Province ». IOP Conference Series : Earth and Environmental Science 921, no 1 (1 novembre 2021) : 012048. http://dx.doi.org/10.1088/1755-1315/921/1/012048.

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Abstract Lateritic bauxite are the products of intense weathering of rocks. It is largely controlled by bedrock type, time, climate (rainfall), and geomorphology. It is located in Kenco area, Landak district, West Kalimantan Province which the rest of the development of Cretaceous volcanism consisting of the island of Borneo Volcanic Formations Mensibau with unit members Granodiorite, quartz diorite and diorite, and the Formation of the Kingdom Volcanic Andesite-trachite units and Formations of alluvium and swamp sediment quarter. Bauxite deposits of Kenco area in Landak are investigated to determine the characteristics of rocks using petrographic analysis. Petrographic analysis aims to determine mineral content and type of source rock based on Travis classification (1955). The results of 15 thin sections showed that aluminum-bearing minerals consisted of orthoclase, plagioclase, and biotite which are the type of source rock are granodiorite, granodiorite porphyry, gabbro porphyry, and basalt porphyry based on Travis classification (1955).
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Grinev, O. M., R. R. Adylbaev, A. S. Semiryakov, E. N. Morozova et R. O. Grinev. « MINERALOGICAL AND PETROGRAPHIC FEATURES OF THE BIMODAL TRACHIPYCROBASALT-TRACHITE VOLCANITE SERIES OF THE SARALINSKY GRABEN-RIFT (KUZNETSKY ALATAU) ». Успехи современного естествознания (Advances in Current Natural Sciences), no 6 2022 (2022) : 66–76. http://dx.doi.org/10.17513/use.37843.

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Wei, Zhang, et Nian Qiao Fang. « Chronology Research on Eocene Trachyte in Zoumaying, Sanshui Basin ». Applied Mechanics and Materials 275-277 (janvier 2013) : 1571–74. http://dx.doi.org/10.4028/www.scientific.net/amm.275-277.1571.

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Trachyte in Zoumaying was erupted in Eocene by 40Ar-39Ar age-dating in previous studies. Multielement Geochemistry analysis and U-Pd radiochronology were introduced on zircons from trachyte in Zoumaying in this paper. The SiO2 and K2O+Na2O contents of trachytes vary between 58.59% to 68.99%, and 10% to 11%. About twenty zircons were selected from trachyte sample with fractures and zonal structure, and most of them were inheritable magmatic zircons. The result of radiochronology on zircon is 60Ma which is similar with the former result as 53.2±0.2Ma.
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Careddu, Nicola, et Silvana Maria Grillo. « “Trachytes” from Sardinia : Geoheritage and Current Use ». Sustainability 11, no 13 (6 juillet 2019) : 3706. http://dx.doi.org/10.3390/su11133706.

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Sardinia was affected by an intense igneous activity which generated calc-alkaline products during the Oligo-Miocene period. The volcanic substance shows large variations, ranging from pyroclastic flow deposits, lava flows and domes. By composition, the deposits are all primarily dacites and rhyolites, with subordinate andesites and very scarce basalts. The rhyolite lavas show porphyritic and ash-flow tuffs. Ignimbrite structures are found in the dacitic domes and rhyolitic lavas. These rocks—commercially known as “Trachytes of Sardinia”—used to be quarried in all historical provinces, mainly in the central part of the island to be used as ornamental and building stone. They continue to be commonly used nowadays, but their use dates back to the prehistoric age. They are easily found in many nuraghi, “domus de janas”, holy wells, Roman works (mosaics, paving, roads, bridges), many churches built in Sardinia and practically in all kinds of structural elements in public and private buildings, such as walls, houses, and bridges. Contrary to the granitoid rocks, whose appearance is largely influenced by the mineralogical composition, the aesthetic feature of volcanic rocks is rather affected by the widest range of colors, structure and texture, i.e., shape, size and distribution of mineral components, porphyric index, etc. “Trachyte” is quarried opencast with the “single low step” method, with descending development, with prevalent use of double-disc sawing machines. Whenever the stone deposit allows higher steps, the chain cutting machine, in combination with diamond wire, becomes the preferred extraction solution. This study aims to at look Sardinian “trachytes” from a geoheritage perspective. After a geological-petrographic framework, the paper discusses the historical uses of “trachyte” in Sardinia. The current state of the art of “trachyte” quarrying, processing and usage in the Island is also described. An analysis of the “trachyte” production has been carried out. Finally, a consideration about how to enhance geotourism in the area is suggested.
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Brenna, Marco, Alessio Pontesilli, Silvio Mollo, Matteo Masotta, Shane J. Cronin, Ian E. M. Smith, Mohammed Rashad Hassan Moufti et Piergiorgio Scarlato. « Intra-eruptive trachyte-phonolite transition : Natural evidence and experimental constraints on the role of crystal mushes ». American Mineralogist 104, no 12 (1 décembre 2019) : 1750–64. http://dx.doi.org/10.2138/am-2019-6963.

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Abstract The generation of silica undersaturated phonolite from silica saturated trachytes is uncommon, as it implies the crossing of the thermal barrier and critical plane of silica undersaturation. Nevertheless, a co-genetic suite displaying compositional transition from benmoreite-trachyte to phonolite has been observed within the Al Shaatha pyroclastic sequence in the Harrat Rahat Volcanic Field (Kingdom of Saudi Arabia). We performed crystallization experiments on benmoreite and trachyte starting compositions to simulate the pressure-temperature-volatile conditions that generated the observed liquid line of descent. The experimental conditions were 200–500 MPa, 850–1150 °C, 0–10 wt% H2O, 0.0–0.5 wt% CO2, and NNO+2 oxygen buffer. The experimental mineral assemblage consists of clinopyroxene, feldspar, and titanomagnetite, as well as glass in variable proportions. The degree of crystallinity of hydrous runs is lower than that of anhydrous ones at analogous pressure and temperature conditions. Clinopyroxene crystallizes with compositions diopside-augite and augite-hedenbergite, respectively, at 500 and 200 MPa. The saturation of feldspar is primarily controlled by temperature and volatile content, with the more potassic composition equilibrating at low temperature (850–900 °C) and anhydrous (for benmoreite) or hydrous (for trachyte) conditions. At low pressure (200 MPa), temperatures below 850 °C, and anhydrous conditions, the degree of crystallization is extremely high (>90%), and the residual glass obtained from trachyte experiments is characterized by peralkaline and sodic affinity. This finding is consistent with natural eruptive products containing interstitial phonolitic glass within an anorthoclase framework. The shift from trachyte to phonolite is therefore interpreted as the result of open system interaction between trachytic magma and intercumulus phonolitic melt, as well as of dissolution of anorthoclase from a crystal mush.
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Eleftheriadis, George, et George Staikopoulos. « Upper Miocene volcanic rocks at Neo Petritsi, Central Macedonia (N. Greece) ». Geologica Balcanica 27, no 3-4 (30 décembre 1997) : 49–54. http://dx.doi.org/10.52321/geolbalc.27.3-4.49.

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Volcanic rocks of dacite and trachyte composition intrude, mainly in the form of dykes, the crystalline basement of the Serbo-Macedonian massif, north of the village Neo Petritsi, in the Kerkini Mountains, Central Macedonia, Greece. They belong to the high-K calc-alkaline to shoshonite series with volcanic arc to post-collisional characteristics. Also, they show features of subduction-related magmas (high LIL/HFS element ratios). REE abundances and disequilibrium mineral textures suggest magma mixing processes for the generation of the studied rocks. 40Ar/39Ar age measurements on sanidine phenocrysts yielded about 12 Ma for the trachytes. Therefore, they are considered among the oldest Neogene to Quaternary volcanic products in the Aegean region that have been related to extensional movements.
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Stolz, A. J. « Mineralogy of the Nandewar Volcano, northeastern New South Wales, Australia ». Mineralogical Magazine 50, no 356 (juin 1986) : 241–55. http://dx.doi.org/10.1180/minmag.1986.050.356.07.

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AbstractThe paper discusses the mineralogy of eruptives from the Nandewar Volcano, which range in composition from hawaiite and trachyandesite to comendite via tristanite and mafic and peralkaline trachyte. Olivine, Ca-rich pyroxene, and amphibole display marked decreases in 100 Mg/(Mg + Fe) ratios in the sequence trachyandesite to comendite, reflecting variation in host rock compositions. The presence of tscher-makitic subcalcic pyroxene and aluminous bronzite megacrysts in several trachyandesites indicates that these experienced intratelluric crystallization at elevated pressures (6–8 kbar). Some titanomagnetite and plagioclase phenocrysts in trachyandesites may also be moderate pressure cognate precipitates. Groundmass pyroxenes of some trachytes and comendites are strongly acmitic. The presence or absence of coexisting alkali amphiboles and aenigmatite appears to reflect stability over a relatively broad range of fO2 conditions. Aenigmatite rims on titanomagnetite and ilmenite microphenocrysts in several peralkaline eruptives provides support for a ‘no-oxide’ field in T-fO2 space. The Fe-Ti oxide compositional data indicate that magmas spanning the spectrum trachy-andesite-comendite crystallized under conditions of decreasing T and fO2 which broadly coincided with the FMQ synthetic buffer curve. However, a voluminous group of slightly older associated rhyolites appear to have crystallized under significantly more oxidizing conditions.
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Huguet, P., et P. Goldschmidt. « Trachome ». EMC - Ophtalmologie 6, no 2 (janvier 2009) : 1–10. http://dx.doi.org/10.1016/s0246-0343(09)52431-8.

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Njonfang, E., et C. Moreau. « The mafic mineralogy of the Pandé massif, Tikar plain, Cameroon : implications for a peralkaline affinity and emplacement from highly evolved alkaline magma ». Mineralogical Magazine 64, no 3 (juin 2000) : 525–37. http://dx.doi.org/10.1180/002646100549409.

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AbstractThe Pandé massif is a small (4.9×63.4 km) subvolcanic complex of the Cameroon Line striking W – E and intrudes a Panafrican granite basement. It comprises a syenite-granite suite, where coarse- to finegrained syenites are predominant and the granites are the product of residual melt after syenite crystallization, and two volcanic (trachyte-rhyolite and trachyte) sequences. Amphibole and pyroxene are the dominant mafic silicates, the first occurring mainly in rhyolites and coarse- to medium-grained syenites, and the second, principally in all syenites, trachytes and granites. Rare biotite flakes are encountered in the coarse-grained or alkaline syenites and fayalite rimmed with oxides occurs in trachyte from the first volcanic sequence (T1). Apatite and zircon are common accessories, whereas some titanite occurs in the medium-grained syenites. The plutonic rocks are drusy, intrude the first volcanic sequence but pre-date the second (T2).All the mafic minerals are Fe-rich. Detailed studies of amphibole and pyroxene show that their compositions define relatively limited trends, amphibole varying from ferro-richterite to arfvedsonite and pyroxenes along the acmite-hedenbergite join of the Ac-Hd-Di diagram, in both the intrusive suite and volcanic rocks. Where the two minerals coexist, pyroxene crystallized subsequent to amphibole, a situation generally found in late-stage or subsolidus aegirines. The overlap in plutonic and volcanic pyroxene trends suggests their crystallization from magmas of the same composition. However, the presence of quartz and fayalite in T1 and of pure aegirine in T2 and the occurrence of Zr-bearing aegirine (NaZr0.5Fe0.52+Si2O6) in the early crystallizing alkaline syenites evolving towards pure aegirine from medium- to fine-grained quartz syenites and granites, are consistent with changes in oxygen fugacities during magmatic differentiation. Two stages are distinguished: fO2 increasingly decreased from T1 to alkaline syenite emplacement (from 10−16 to 10−24 bracketed by WM and QFM buffers) where a disequilibrium, probably caused by water dissociation with volatile loss (H2) during magma degassing, favoured crystallization of Zr-bearing aegirine; a decrease in amphibole proportions towards medium-grained quartz syenites and an increase in fO2 from the medium-grained quartz syenites to granites and T2 sequence.The Mg-poor nature of all the mafic silicates, subsolidus origin of amphiboles, crystallization of pyroxene subsequent to amphibole and subsolidus trends defined by pyroxenes are compatible with the parental magma having itself been a late-stage derivative magma, e.g. the last product of an alkaline melt from which the voluminous Mayo Darlé granite bodies crystallized.
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Aikawa, Takuya, et Katsumi Togashi. « Movement of Bursaphelenchus xylophilus (Nematoda : Aphelenchoididae) in tracheal system of adult Monochamus alternatus (Coleoptera : Cerambycidae) ». Nematology 2, no 5 (2000) : 495–500. http://dx.doi.org/10.1163/156854100509402.

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Abstract To clarify the movement of Bursaphelenchus xylophilus in the tracheal system of adult Monochamus alternatus, 49 adult beetles were dissected 0, 15, 30, 45 or 60 days after emergence and the nematodes heading inwards to the distal end and outwards to spiracles in tracheae were counted. In adult beetles just after emergence, the majority of nematodes headed inwards. The proportion of tracheae with nematodes heading outwards was significantly higher for beetles aged 15, 30 or 45 days than for newly-emerged beetles. The proportion of nematodes pointing outwards tended to increase with beetle age and was significantly greater in 45-day old beetles than in newly emerged ones. A comparison of prediction with observation suggests that the nematodes move forwards in the tracheal system from spiracles and exit from spiracles after turning round in the tracheae. Le déplacement de Bursaphelenchus xylophilus (Nematoda: Aphelenchoididae) dans le système trachéen des adultes de Monochamus alternatus (Coleoptera: Cerambycidae) - Pour mieux comprendre le déplacement de Bursaphelenchus xylophilus dans le système trachéen de Monochamus alternatus 49 insectes ont été disséqués 0, 15, 30, 45 ou 60 jours après l'émergence et les nématodes se dirigeant dans les trachées vers l'intérieur - partie distale - et vers l'extérieur - stigmates - ont été comptés. Chez les insectes adultes, immédiatement après l'émergence la majorité des nématodes se dirigent vers l'intérieur. La proportion de trachées contenant des nématodes se dirigeant vers l'extérieur est significativement plus élevée chez les insectes âgés de 15, 30 ou 45 jours que chez ceux ayant émergé depuis peu. La proportion de nématodes se dirigeant vers l'avant a tendance à croître avec l'âge de l'insecte: elle est en effet significativement plus élevée chez les insectes âgés de 45 jours que chez ceux dont l'émergence est récente. La comparaison entre projection et observations suggère que les nématodes progressent dans le système trachéen à partir des stigmates et sortent par ces derniers après s'être retournés dans la trachée.
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Thèses sur le sujet "Trachite"

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Zara, Arturo. « La trachite euganea : approvvigionamento, impiego e diffusione in età romana ». Doctoral thesis, Università degli studi di Padova, 2016. http://hdl.handle.net/11577/3424442.

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The Euganean trachyte, a volcanic rock extracted from the Euganean Hills, is a stone material quarried since ancient times in Veneto region. Thanks to its distinctive mechanical properties, trachyte had a wide geographical spread, since protohistoric ages and even more in Roman times, throughout Regio X (Venetia et Histria), as well as in Regio VIII (Aemilia), westwards to Milano/Mediolanum in Regio XI (Transpadana), and to the south at least as far as Urbisaglia/Urbs Salvia, in Regio V (Picenum). This stone was employed roughly shaped for foundation or well cut for architectural elements, but its main use was for paving roads. Trachytic flagstones from Euganean Hills has been identified eastwards to Aquileia, but they are employed also in all major towns along via Aemilia and, to the south, in a pavement of Ancona. As well as in architecture, Euganean trachyte was employed to carve artefacts, typically for the production of millstones, querns and mortars, but we usually find gravestones and inscriptions too. According to these findings, important implications can be inferred for distribution of trachyte in Roman times: a combined approach, involving petrographic and geochemical data, allows definitely identifying the quarry of Euganean trachyte in which architectural elements or artefacts were extracted. This analytical method makes it possible to argue about the cycle of activation, exploitation and exhaustion of the Euganean quarries. Therewithal, an integrated study of the chronology of the trachytic sample, their quarries of provenance in Euganean Hills and the cities of final destination allows reflecting about commercial dynamics and giving an overall view of the use of Euganean trachyte in Roman Northern Italy.
La trachite euganea, una roccia vulcanica estratta dai Colli Euganei, è una delle risorse lapidee cavate sin dall’età antica nell’attuale comprensorio veneto. Le peculiari proprietà meccaniche contribuirono a una larga diffusione della trachite, in particolar modo in età romana, ma già nel corso della protostoria. Il materiale lapideo euganeo venne impiegato in tutta la Regio X (Venetia et Histria), ma anche nell’Aemilia; verso ovest la trachite giunse a Milano/Mediolanum, in Transpadana, mentre a sud è documentata sino a Urbisaglia/Urbs Salvia. Questa pietra trovò impiego tanto nelle fondazioni quanto negli alzati degli edifici, rispettivamente come blocchi sbozzati oppure rifiniti, ma venne messa in opera principalmente nelle pavimentazioni stradali. Basoli trachitici provenienti dai Colli Euganei sono stati identificati verso est sino ad Aquileia, ma risultano utilizzati anche nelle maggiori città sorte lungo la via Aemilia e in un selciato di Ancona, centro più a meridione rispetto al bacino di approvvigionamento in cui è stato documentato l’uso della trachite in un tratto viario. Oltre che in ambito architettonico, la trachite euganea fu sfruttata per produrre manufatti, principalmente strumenti per la macinazione, ma si realizzarono sovente anche cippi, stele e monumenti iscritti. Sulla base di questi ritrovamenti, possono essere ricostruite le dinamiche di diffusione del materiale trachitico in età romana: un’analisi combinata di carattere petrografico e geochimico consente di determinare le cave euganee dalle quali venne estratto il materiale per la realizzazione degli elementi architettonici o dei manufatti; sulla base di queste stesse indagini è inoltre possibile ricavare informazioni sul ciclo di attivazione, sfruttamento e abbandono dei siti estrattivi sui Colli Euganei. Allo stesso modo, infatti, uno studio integrato della cronologia dei campioni, delle loro cave di provenienza e dei centri in cui sono stati esportati consente di elaborare riflessioni attorno alle dinamiche commerciali e all’impiego della trachite euganea in Italia settentrionale nel corso dell’età romana.
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Macchiarini, Paolo. « La transplantation de trachée et trachéo-oesophagienne ». Besançon, 1997. http://www.theses.fr/1997BESA3012.

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Cette thèse a porté sur différents aspects de la transplantation allogénique de la trachée et plus particulièrement sur le développement d'une technique chirurgicale de revascularisation directe artérielle et veineuse des greffons trachéaux et œsophagiens. Nous avons d'abord montré que les allogreffes trachéales dévascularisées nécrosent, quel que soit le procédé de conservation. Par étapes successives, nous avons ensuite démontré que : a) la vascularisation de la trachée du porc est peu différente de celle de l'Homme et qu'elle peut être préservée par le prélèvement monobloc de toute la masse cervico-médiastinale ; b) la viabilité histologique et fonctionnelle à long terme (30 jours) des segments de trachée (jusqu'à 12 cm) transplantés nécessitait une revascularisation à la fois artérielle et veineuse et un traitement immuno­suppresseur ; c) l'ischémie froide tolérée par un greffon thyro-trachéo­œsophagien est de 15 heures environ, et que d) l'association d'une bronchoplégie à la trachéoplégie améliore la préservation du greffon trachéal et permet d'utiliser la trachée thoracique distale bien que les artères bronchiques ne soient pas revascularisées. Ces progrès techniques ont permis pour la première fois de transplanter, en position orthotopique, de longues (environ 10 cm) allogreffes trachéales et œsophagiennes qui sont restées viables après 30 jours de transplantation. Enfin, les résultats préliminaires avec les souris nudes comme porte-greffe de trachée d'embryons humains morts provenant d'I. V. G indiquent que des greffons trachéaux se développent suffisamment pour être utilisés comme patchs d'élargissement pour le traitement des sténoses congénitales, car les allogreffons restent viables à moyen terme malgré l'absence d'une revascularisation directe. Même si des conclusions définitives sont prématurées, la transplantation orthotopique avec ces greffons ne semble pas encore envisageable en raison de l'immaturité des structures cartilagineuses
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Abelanet, Sylvaine. « Détermination trachéale de la maladie de Recklinghause ». Montpellier 1, 1990. http://www.theses.fr/1990MON11099.

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Baudoin, Norbert. « Tuberculose trachéale pseudo-tumorale à mycobacterium bovis : à propos d'un cas avec revue de la littérature ». Montpellier 1, 1988. http://www.theses.fr/1988MON11273.

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Germinario, Luigi. « Archaeometry of trachyte of the Euganean Hills (NE Italy) : provenance quarry recognition and weathering analysis ». Doctoral thesis, Università degli studi di Padova, 2017. http://hdl.handle.net/11577/3423235.

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The Euganean Hills (Veneto, NE Italy) are the most important quarry district in Italy for the extraction of trachyte, which has been carried out in tens of quarries all through the centuries, from Pre-Protohistory and, more intensely, from the Roman age onwards. Trachyte of the Euganean Hills has an age-old tradition of usage as carving and building stone, mainly in northern and central Italy, e.g., for manufacturing diverse everyday items and funerary and votive artifacts, as well as for building infrastructure, monuments, and in public and private construction. An archaeometric study of Euganean trachyte is here presented following two main research directions. The first involves the identification of criteria for recognizing provenance quarry of trachyte used in archaeological and historical materials, supported by a petrographic and geochemical database obtained from samples collected in the entire area of the Euganean Hills. The petrographic provenance tracers involve mineralogical composition and textural features of phenocrysts and groundmass, whereas the geochemical tracers comprise major- and trace-element composition of bulk rock and phenocrysts, in particular of mafic minerals. Trachyte provenance can be most precisely determined by applying multivariate relations based on phenocryst chemistry, which can be analyzed even on small, altered archaeological samples. The provenance markers were tested in a provenance study of Euganean trachyte used in Roman public infrastructure in Veneto, including roads, bridges and forum squares. The results provide insights into the commercial, political and economic dimension of the management of trachyte quarries and development of extraction activities in the Roman times, as well as into ancient trades in northern Italy and the main routes of stone circulation. The second research topic addresses the investigation of weathering and durability of Euganean trachyte used as building stone. Weathering crusts and patinas were detected on trachyte in urban environment, and their mineralogical and microstructural characteristics, major- and trace-element chemical composition were analyzed. The alteration products, mainly involving surface enrichment in carbonates, heavy metals, and carbon, represent an informative indicator of environmental conditions, in particular air quality, and chemical stability of the rock-forming minerals of trachyte and neighboring jointing mortars. Trachyte durability was also examined by a petrophysical and mechanical characterization of quarry samples, providing elements for aiding quality assessment by conservators-restorers and building companies. Particular emphasis is placed on the properties related to absorption, transport, and retention of water and aqueous solutions, in liquid and vapor state. Depending on porosimetric characteristics, i.e., pore volume, size, size distribution, shape, and degree of interconnection, different trachyte varieties exhibit a relatively wide array of technical performances, diversely affecting their decay behavior.
I Colli Euganei (Veneto) rappresentano il più importante distretto di cava in Italia per l’estrazione di rocce trachitiche, attività storicamente condotta in decine di cave e iniziata già in epoca pre-protostorica, poi intensificatasi a partire dall’età romana. L’importanza della trachite dei Colli Euganei nel patrimonio culturale, soprattutto del nord e centro Italia, si collega ad una tradizione millenaria di impiego nella manifattura di utensili e manufatti votivi e funerari, nella costruzione di infrastrutture e monumenti e nell’edilizia pubblica e privata. In questa tesi, si presentano i risultati di uno studio archeometrico della trachite euganea incanalato in due linee di ricerca principali. La prima riguarda l’identificazione di criteri per riconoscere la cava di provenienza della trachite usata in materiali di interesse archeologico e storico, supportata da un database petrografico e geochimico costruito su campioni prelevati nell’intero territorio dei Colli Euganei. I traccianti petrografici di provenienza comprendono la composizione mineralogica e le caratteristiche tessiturali dei fenocristalli e della matrice, mentre i traccianti geochimici considerano la composizione degli elementi maggiori e in traccia della roccia totale e dei fenocristalli, in particolare dei minerali femici. La maggior precisione nella determinazione della provenienza si ottiene applicando relazioni multivariate basate sulla composizione chimica dei fenocristalli, che può essere analizzata anche su campioni archeologici, spesso di dimensioni limitate e alterati. L’efficacia di questi indicatori è stata poi verificata in uno studio di provenienza della trachite euganea impiegata in Veneto in infrastrutture pubbliche di età romana, quali strade basolate, ponti e piazze forensi. I risultati di tale studio restituiscono un’idea della dimensione commerciale, politica ed economica in cui si inseriva la gestione delle cave romane e l’evoluzione delle attività estrattive, oltre a fornire informazioni sui traffici commerciali antichi sviluppatisi nel nord Italia. La seconda tematica di ricerca è impostata sullo studio del degrado e della durevolezza della trachite euganea usata come pietra da costruzione. Inizialmente, si sono individuate croste e patine di alterazione della trachite in ambiente urbano e se ne sono analizzate le caratteristiche mineralogiche e strutturali e la composizione chimica degli elementi maggiori e in traccia. I prodotti di alterazione, che si rilevano spesso come arricchimenti superficiali in carbonati, metalli pesanti e carbonio, rappresentano degli interessanti indicatori del contesto ambientale, in particolare della qualità dell’aria, e della stabilità chimica delle fasi mineralogiche della trachite e delle malte di allettamento usate sulla pietra. Infine, la durevolezza della trachite è stata esaminata attraverso una caratterizzazione petrofisica e meccanica di campioni di cava, fornendo elementi utili alla valutazione della qualità da parte di restauratori, conservatori e compagnie edili. Particolare attenzione è stata riservata alla valutazione delle proprietà legate all’assorbimento, movimento e permanenza nella pietra dell’acqua e di soluzioni acquose, allo stato liquido e gassoso. I risultati sperimentali suggeriscono che la variabilità nella resa fisico-meccanica di diversi tipi di trachite dipende primariamente dalle peculiari caratteristiche porosimetriche (volume, dimensione, distribuzione dimensionale, morfologia e grado di interconnessione dei pori), che contribuiscono quindi a determinare diversi gradi di resistenza al degrado.
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Trachte, Dominik [Verfasser]. « Problematik des Vorsteuerabzuges bei Holdinggesellschaften / Dominik Trachte ». Frankfurt : Peter Lang GmbH, Internationaler Verlag der Wissenschaften, 2012. http://d-nb.info/104246099X/34.

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FARJAS, ERIC. « Les tracheites bacteriennes de l'enfant : a partir de 135 observations de la litterature ». Lyon 1, 1992. http://www.theses.fr/1992LYO1M078.

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Longuefosse, Olivier. « Bilan ultrastructural du trachome et perspectives actuelles ». Bordeaux 2, 1989. http://www.theses.fr/1989BOR25179.

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Evans, Peter James. « A U - series disequilibrium study of the Longonot trachyte magma chamber, Kenya ». Thesis, Open University, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.300016.

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Merten, Marc. « Culture des cellules trachéo-bronchiques glandulaires humaines : étude des produits de sécrétion et de la régulation de la sécrétion de ces cellules in vitro : application à l'étude de la mucoviscidose ». Nancy 1, 1991. http://www.theses.fr/1991NAN10442.

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Livres sur le sujet "Trachite"

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Zara, Arturo. La trachite euganea : Archeologia e storia di una risorsa lapidea del Veneto antico. Roma : Edizioni Quasar, 2018.

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Khomichev, V. L. Ėtalon Shirinskogo (byskarskogo) trakhit-trakhibazalʹtovogo kompleksa (Minusinskiĭ mezhgornyĭ progib). Novosibirsk : Sibirskiĭ NII geologii, geofiziki i mineralʹnogo syrʹi︠a︡, 2008.

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Trachtenvereinigung, Luzerner. Luzerner Trachten. Hochdorf : Seetal Medien, 2002.

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Sophocles. Aiace ; Trachinie. Milano : A. Mondadori, 1991.

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Sophocles. Trachinie ; Filottete. Milano : Rizzoli, 1990.

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Teller, Juergen. Tracht. New York : Lehmann Maupin, 2001.

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Vreni, Abt-Käppeli, et Aargauischer Trachtenverband, dir. Trachten im Aargau. Aarau : Sauerländer, 1985.

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Mecher, Anna Luise. Trachten der Banater Schwaben. Bad Königshofen : Schunk, 1988.

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Soltkahn, Gisela. Trachten aus Schleswig-Holstein. [Hamburg] : H. Christians, 1987.

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Soltkahn, Gisela. Trachten aus Scheswig-Holstein. Hamburg : Christians, 1987.

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Chapitres de livres sur le sujet "Trachite"

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Carcangiu, Sara, Augusto Montisci et Renato Forcinetti. « Ultrasonics for the Diagnosis of a Trachite Stone Wall ». Dans Ultrasonic Nondestructive Evaluation Systems, 235–44. Cham : Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-10566-6_8.

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von Plehwe-Leisen, Esther, et Hans Leisen. « Drachenfels Trachyte (Drachenfels-Trachyt) ». Dans Natural Stone and World Heritage, 129–33. London : CRC Press, 2021. http://dx.doi.org/10.1201/9780367823061-26.

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Milashev, Vladimir A. « Trachyte Diatremes ». Dans Explosion Pipes, 177–84. Berlin, Heidelberg : Springer Berlin Heidelberg, 1988. http://dx.doi.org/10.1007/978-3-642-73258-4_14.

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O’Hara, James E., Igor UsUpensky, N. J. Bostanian, John L. Capinera, Reg Chapman, Carl S. Barfield, Marilyn E. Swisher et al. « Trachea (pl., Tracheae) ». Dans Encyclopedia of Entomology, 3833. Dordrecht : Springer Netherlands, 2008. http://dx.doi.org/10.1007/978-1-4020-6359-6_2497.

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Gabler, Peter. « Trachtet als Erstes ». Dans Visitenkarte des Traumes, 84–86. Wiesbaden : Gabler Verlag, 2003. http://dx.doi.org/10.1007/978-3-663-12941-7_26.

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St., Amalie. « Weibliche Tracht ». Dans Frauenrechte sind Menschenrechte !, 139–40. Herbolzheim : Centaurus Verlag & Media, 2001. http://dx.doi.org/10.1007/978-3-86226-403-2_34.

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Miralles, Carles. « Ambienti, luoghi, spazi nelle Trachinie ». Dans Il dramma sofocleo : testo, lingua, interpretazione, 209–21. Stuttgart : J.B. Metzler, 2003. http://dx.doi.org/10.1007/978-3-476-02909-6_14.

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Seguin, A., D. Radu, M. D. Destable, P. Y. Brillet et E. Martinod. « Tumeurs malignes de la trachée ». Dans Oncologie thoracique, 247–62. Paris : Springer Paris, 2011. http://dx.doi.org/10.1007/978-2-287-99041-0_17.

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Neumann, Bernd. « Taoismus, Hermeneutik und moderne Physik. Noch ein notwendiger Exkurs ». Dans Umrisse einer Dritten Kultur im interdisziplinären Zusammenspiel zwischen Literatur und Naturwissenschaft, 219–38. Berlin, Heidelberg : Springer Berlin Heidelberg, 2021. http://dx.doi.org/10.1007/978-3-662-63204-8_16.

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Résumé :
ZusammenfassungNoch in den 80er Jahren des vorigen Jahrhunderts gab es eine breit rezipierte, sehr bald ins „Modische“ zerlaufene „New Age“-Bewegung, die weniger einen „fernöstlichen“ Mozart statuieren, als gleich die gesamte moderne Teilchen-Physik mit altchinesischen Lehren und Weisheiten zu den zwei Seiten einer gleichen Münze zu verbinden trachtete. Deren Erfolg kann heute, bis hinein in die allgegenwärtigen Angebote „fernöstlicher Meditationstechniken“, in zahlreichen Fitness-Studios besichtigt werden. Ein entscheidender bestseller-Autor war in diesem Zusammenhang Fritjof Capra mit Wendezeit.
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Kitzinger, Margaret Rachel. « The Divided Worlds of Sophocles'Women of Trachis ». Dans A Companion to Sophocles, 111–25. Oxford, UK : Wiley-Blackwell, 2013. http://dx.doi.org/10.1002/9781118350508.ch9.

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Actes de conférences sur le sujet "Trachite"

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Bozkurt, V., et Y. Uçbaş. « Concentration of feldspar from trachyte ». Dans The 8th International Mineral Processing Symposium. Taylor & Francis Group, 6000 Broken Sound Parkway NW, Suite 300, Boca Raton, FL 33487-2742 : CRC Press, 2017. http://dx.doi.org/10.4324/9780203747117-64.

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White, John C., Don F. Parker et Kevin M. Urbanczyk. « PERALKALINE RHYOLITE AND TRACHYTE IN BIG BEND NATIONAL PARK, TEXAS ». Dans GSA Annual Meeting in Denver, Colorado, USA - 2016. Geological Society of America, 2016. http://dx.doi.org/10.1130/abs/2016am-282728.

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Nabi-Bidhendi, M., et M. Kosarian. « Elastic Wave Propagation in Dry and Water-Saturated Trachyte-Basalt Rock Samples ». Dans 60th EAGE Conference and Exhibition. European Association of Geoscientists & Engineers, 1998. http://dx.doi.org/10.3997/2214-4609.201408364.

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Wolff, John A. « CRYSTAL ACCUMULATION AND MELTING IN FELSIC ALKALINE MAGMAS, AND THE SYENITE-TRACHYTE PROBLEM ». Dans GSA Annual Meeting in Denver, Colorado, USA - 2016. Geological Society of America, 2016. http://dx.doi.org/10.1130/abs/2016am-281584.

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Polk, Raven, et John C. White. « MODELLING THE METALUMINOUS TRACHYTE TO PERALKALINE RHYOLITE TRANSITION USING THE RHYOLITE-MELTS ALGORITHM ». Dans 54th Annual GSA North-Central Section Meeting - 2020. Geological Society of America, 2020. http://dx.doi.org/10.1130/abs/2020nc-348117.

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Cheong, Chang-Sik, Youn-Joong Jeong, Young Kwan Sohn et Kye-Hun Park. « Mantle-Crust Interaction Recorded in Zircons from Jeju Trachytes ». Dans Goldschmidt2020. Geochemical Society, 2020. http://dx.doi.org/10.46427/gold2020.414.

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Tonggiroh, Adi, Musri Mawaleda, Haerany Sirajuddin, Ulva Ria Irfan et Adiba Safari Triaryanti. « Geochemistry of pyrite on trachyte and Tonasa formation limestones Ralla area, Barru regency South Sulawesi ». Dans THE PROCEEDINGS OF THE 4TH EPI INTERNATIONAL CONFERENCE ON SCIENCE AND ENGINEERING (EICSE) 2020. AIP Publishing, 2022. http://dx.doi.org/10.1063/5.0095307.

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Rost, Rebecca, Scott Giorgis et Eric Horsman. « CONSTRAINTS ON MINIMUM RATES OF IGNEOUS EMPLACEMENT FROM PALEOMAGNETIC DATA, TRACHYTE MESA LACCOLITH, HENRY MOUNTAINS, UT ». Dans GSA Annual Meeting in Denver, Colorado, USA - 2016. Geological Society of America, 2016. http://dx.doi.org/10.1130/abs/2016am-283423.

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Woodward, Lee A., et Michael S. Fulp. « Gold mineralization associated with alkali trachyte breccia in the Gallinas mining district, Lincoln County, New Mexico ». Dans 42nd Annual Fall Field Conference. New Mexico Geological Society, 1991. http://dx.doi.org/10.56577/ffc-42.323.

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Collins, Emma, Hannah L. Schlaerth, Calvin Miller, Lily L. Claiborne, Michelle Foley et Warner Cribb. « GEOCHEMICAL AND PETROLOGIC INVESTIGATION OF OPEN SYSTEM PROCESSES IN POST- SUPERERUPTION MEADOW CREEK TRACHYTE, SOUTHERN BLACK MOUNTAINS, AZ ». Dans GSA Annual Meeting in Denver, Colorado, USA - 2016. Geological Society of America, 2016. http://dx.doi.org/10.1130/abs/2016am-284295.

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Rapports d'organisations sur le sujet "Trachite"

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Head Office - Construction of new premises : Cutting and polishing of trachyte for HO facade. Reserve Bank of Australia, septembre 2021. http://dx.doi.org/10.47688/rba_archives_pn-000715.

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Head Office - Construction of new premises - Cutting and polishing of trachyte for HO facade (copy d) - 21 August 1915. Reserve Bank of Australia, mars 2022. http://dx.doi.org/10.47688/rba_archives_pn-000719.

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Head Office - Construction of new premises - Cutting and polishing of trachyte for HO fa�ade (copy b) - 21 August 1915. Reserve Bank of Australia, mars 2022. http://dx.doi.org/10.47688/rba_archives_pn-000717.

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Head Office - Construction of new premises - Cutting and polishing of trachyte for HO fa�ade (copy c) - 21 August 1915. Reserve Bank of Australia, mars 2022. http://dx.doi.org/10.47688/rba_archives_pn-000718.

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Head Office - Construction of new premises - Cutting and polishing of trachyte for HO fa�ade (copy a) - 21 August 1915. Reserve Bank of Australia, mars 2022. http://dx.doi.org/10.47688/rba_archives_pn-000716.

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