全部文献期刊会议图书|学者科研项目
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作者:Silvio Capedri , Riccardo Grandi , Giampiero Venturelli
来源:[J].Journal of Archaeological Science(IF 1.889), 2002, Vol.30 (4), pp.491-509
摘要:... Those flagstones are made mainly of trachytes from the Euganean Hills (close to Padua, in Northern Italy), a magmatic Complex of Tertiary age, comprising trachytes, rhyolites, dacites and subordinate basalts. The Euganean trachytes were used intensively, starting probabl...
作者:R. Macdonald , B. Bagiński , P.T. Leat ...
来源:[J].LITHOS(IF 3.779), 2011, Vol.125 (1-2), pp.553-568
摘要:Abstract(#br)Electron microprobe analyses are presented for phenocrysts and matrix glass in peralkaline, silica-oversaturated trachytes from the Menengai volcano, Kenya Rift Valley. The dominant phenocryst assemblage is alkali feldspar–hedenbergite–fayalite–titanomagnet...
作者:Minghua Ren , Peter A. Omenda , Elizabeth Y. Anthony ...
来源:[J].LITHOS(IF 3.779), 2006, Vol.91 (1), pp.109-124
摘要:Abstract(#br)The Quaternary Eburru volcanic complex in the south-central Kenya Rift consists of pantelleritic trachytes and pantellerites. The phenocryst assemblage in the trachytes is sanidine + fayalite + ferrohedenbergite + aenigmatite ± quartz ± ilmenite ± magnetite ...
作者:Mustafa Kumral , Hakan Coban , Atasever Gedikoglu ...
来源:[J].Journal of Asian Earth Sciences(IF 2.379), 2005, Vol.27 (5), pp.707-716
摘要:Abstract(#br)The Plio-Quaternary alkaline volcanic rocks at Gölcük, Isparta, SW Turkey, include older porphyritic trachytes, augite trachytes and younger trachyandesitic and tephriphonolitic dikes. In order to better understand their pre-eruptive evolution the geochemical var...
作者:D. Giordano , C. Romano , P. Papale ...
来源:[J].Chemical Geology(IF 3.154), 2004, Vol.213 (1), pp.49-61
摘要:... Calculated viscosities are compared with those pertaining to natural liquids of phonolitic, rhyolitic, and trachybasaltic composition, showing that trachytes are intermediate between rhyolites and phonolites, consistent with the dominant eruptive style associated with the...
作者:Frank C. Ramos , J.A. Wolff , J.E. Buettner ...
来源:[J].Journal of Volcanology and Geothermal Research(IF 2.193), 2019, Vol.374, pp.226-241
摘要:... Here, Ra/Th isotopes are used to determine crystallization ages of sanidine from trachytes recently erupted at Changbaishan volcano, best known for its destructive “Millennium Eruption” at 946 CE. To determine Ra/Th crystallization ages, the partition coefficient of rad...
作者:Jian-Lin Chen , Wen-Xia Zhao , Ji-Feng Xu ...
来源:[J].Gondwana Research(IF 7.396), 2011, Vol.21 (1), pp.112-122
摘要:... The Miocene Bugasi volcanic rocks (BVR) in the western part of the Lhasa block are composed mainly of trachyandesites and trachytes, both of which belong to the shoshonite series. The trachytes show somewhat transitional compositions between the mantle-derived trachyandesites...
作者:Nicola Careddu , Silvana Maria Grillo
来源:[J].Sustainability, 2019, Vol.11 (13)
摘要:... 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...
作者:S. Jung , K. Mezger , F. Hauff ...
来源:[J].Chemical Geology(IF 3.154), 2013, Vol.354, pp.203-215
摘要:Abstract(#br)The volcanic rocks of the Rhön area (Central European Volcanic Province, Germany) belong to a moderately alkali basaltic suite that is associated with minor tephriphonolites, phonotephrites, tephrites, phonolites and trachytes. Based on isotope sytematics ( 87 ...
作者:Mohamed M. Hamdy , Anton G. Waheeb , Samir M. Aly ...
来源:[J].Journal of African Earth Sciences(IF 1.229), 2017
摘要:Abstract(#br)The Gabal Nasb El Atshan Upper Carboniferous-Lower Permian altered trachytes include uranium up to 3165 ppm. The paleostress and resolved shear stress analyses of the deformation systems in Gabal Nasb El Atshan area indicate that the trachyte was subjected to WNW-ES...

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