FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W2003378093> ?p ?o ?g. }

• W2003378093 endingPage "157" @default.
• W2003378093 startingPage "141" @default.
• W2003378093 abstract "The fossil forest in the Çamlıdere-Çeltikçi-Güdül region of the province of Ankara in Turkey has a large number of petrified coniferous and oak tree remains. Petrification occurred in volcanic ashes and tuffs with permineralization, and Fe, Mg, Ca and Ni ions played important roles in the substitution of Si for C. However, the petrified wood samples are heterogeneous in colouration, weight, toughness, and durability, despite being obtained from the same source. Those features are very important for end-users because petrified woods, if cut and polished, are used widely as both decorative indoor tiles and gemstone objects, but heterogeneous materials suffer large wastage while they are being worked and used. Chemical analyses, specific gravity measurements, polarizing microscope studies, X-ray diffraction patterns, and scanning electron image evaluations were performed to classify and identify the homogenous material of the petrified woods relating to its physical and mineralogical characteristics. The different characteristics of the petrified wood samples are due to their varying inner structures, which depend on the replacement silica-building phases and their ratios, and silica particle sizes. Thin sections and XRD patterns revealed that petrified woods in the region were silicified by replacement with both chalcedonic quartz components, including chalcedony (length-fast quartz), moganite and orthorhombic-silica (length-slow quartz), and opalline quartz components including opal-CT and opal-C (length-slow quartz). The scanning electron microscope images were shown that the internal structures of the petrified woods consist of mostly submicron-sized (100–800 nm), and partially nano-sized (60–120 nm) silica-building particles. So, the petrified wood samples can be firstly classified into five main-groups based on their colourations and specific gravity values, then, into three sub-groups based on the principal chalcedonic and opalline quartz silica-building phases and related particle sizes, and also weighing, toughness, and durability. In the first group (samples 1, 2, and 3), the crystallinity gradation of the petrified woods can be classified as quasi-coarse crystalline because they include mainly chalcedony and moganite phases with 800–200 nm ranging in particle size. They are heavy, tough, and resistance as a material, as shown by specific gravity values of 2.60, 2.56, and 2.54, respectively. In the second group (sample 4), the crystallinity gradation of the petrified wood can be classified as quasi-fine crystalline because it includes mainly o-silica and moganite phases with 400–100 nm ranging in particle size. It is medium-heavy, semi-tough and quasi-resistance as a material, as shown by a specific gravity value of 2.42. In the third group (sample 5), the crystallinity gradation of the petrified wood can be classified as quasi-nano-crystalline because it includes mainly opal-CT and opal-C phases with 120–60 nm ranging in particle size. The material is slight, brittle, and weak as a material, as shown by a specific gravity value of 2.18. Ultimately, in the petrified wood found in the Çamlıdere-Çeltikçi-Güdül region of Ankara province in Turkey, it is revealed that samples 1, 2, and 3 represent flint and chalcedony quartz mineral species, samples 4 and 5 represent chalcedony and opal quartz mineral species." @default.
• W2003378093 created "2016-06-24" @default.
• W2003378093 creator A5000369837 @default.
• W2003378093 creator A5050827973 @default.
• W2003378093 date "2009-03-01" @default.
• W2003378093 modified "2023-09-24" @default.
• W2003378093 title "A combined polarizing microscope, XRD, SEM, and specific gravity study of the petrified woods of volcanic origin from the Çamlıdere-Çeltikçi-Güdül fossil forest, in Ankara, Turkey" @default.
• W2003378093 cites W1965129842 @default.
• W2003378093 cites W1971066430 @default.
• W2003378093 cites W1971722127 @default.
• W2003378093 cites W1972854758 @default.
• W2003378093 cites W1987018316 @default.
• W2003378093 cites W1987402190 @default.
• W2003378093 cites W1988834826 @default.
• W2003378093 cites W1994023018 @default.
• W2003378093 cites W2003897321 @default.
• W2003378093 cites W2008448904 @default.
• W2003378093 cites W2012274377 @default.
• W2003378093 cites W2020443319 @default.
• W2003378093 cites W2021839932 @default.
• W2003378093 cites W2035568257 @default.
• W2003378093 cites W2037015197 @default.
• W2003378093 cites W2037034826 @default.
• W2003378093 cites W2040233487 @default.
• W2003378093 cites W2046735978 @default.
• W2003378093 cites W2052259442 @default.
• W2003378093 cites W2054956207 @default.
• W2003378093 cites W2056491064 @default.
• W2003378093 cites W2057698594 @default.
• W2003378093 cites W2071242319 @default.
• W2003378093 cites W2087026485 @default.
• W2003378093 cites W2093935212 @default.
• W2003378093 cites W2096729913 @default.
• W2003378093 cites W2104226715 @default.
• W2003378093 cites W2116364234 @default.
• W2003378093 cites W2139272201 @default.
• W2003378093 cites W2143292941 @default.
• W2003378093 cites W2146874305 @default.
• W2003378093 cites W2257608670 @default.
• W2003378093 cites W2376388796 @default.
• W2003378093 doi "https://doi.org/10.1016/j.jafrearsci.2009.01.001" @default.
• W2003378093 hasPublicationYear "2009" @default.
• W2003378093 type Work @default.
• W2003378093 sameAs 2003378093 @default.
• W2003378093 citedByCount "14" @default.
• W2003378093 countsByYear W20033780932012 @default.
• W2003378093 countsByYear W20033780932013 @default.
• W2003378093 countsByYear W20033780932015 @default.
• W2003378093 countsByYear W20033780932016 @default.
• W2003378093 countsByYear W20033780932017 @default.
• W2003378093 countsByYear W20033780932019 @default.
• W2003378093 countsByYear W20033780932020 @default.
• W2003378093 countsByYear W20033780932022 @default.
• W2003378093 crossrefType "journal-article" @default.
• W2003378093 hasAuthorship W2003378093A5000369837 @default.
• W2003378093 hasAuthorship W2003378093A5050827973 @default.
• W2003378093 hasConcept C120806208 @default.
• W2003378093 hasConcept C127313418 @default.
• W2003378093 hasConcept C151730666 @default.
• W2003378093 hasConcept C159985019 @default.
• W2003378093 hasConcept C17409809 @default.
• W2003378093 hasConcept C192562407 @default.
• W2003378093 hasConcept C199289684 @default.
• W2003378093 hasConcept C26771246 @default.
• W2003378093 hasConcept C2779870107 @default.
• W2003378093 hasConceptScore W2003378093C120806208 @default.
• W2003378093 hasConceptScore W2003378093C127313418 @default.
• W2003378093 hasConceptScore W2003378093C151730666 @default.
• W2003378093 hasConceptScore W2003378093C159985019 @default.
• W2003378093 hasConceptScore W2003378093C17409809 @default.
• W2003378093 hasConceptScore W2003378093C192562407 @default.
• W2003378093 hasConceptScore W2003378093C199289684 @default.
• W2003378093 hasConceptScore W2003378093C26771246 @default.
• W2003378093 hasConceptScore W2003378093C2779870107 @default.
• W2003378093 hasIssue "4-5" @default.
• W2003378093 hasLocation W20033780931 @default.
• W2003378093 hasOpenAccess W2003378093 @default.
• W2003378093 hasPrimaryLocation W20033780931 @default.
• W2003378093 hasRelatedWork W1919579352 @default.
• W2003378093 hasRelatedWork W1984199562 @default.
• W2003378093 hasRelatedWork W2000658640 @default.
• W2003378093 hasRelatedWork W2003378093 @default.
• W2003378093 hasRelatedWork W2067389300 @default.
• W2003378093 hasRelatedWork W2142790429 @default.
• W2003378093 hasRelatedWork W2144402366 @default.
• W2003378093 hasRelatedWork W2342953645 @default.
• W2003378093 hasRelatedWork W2561957162 @default.
• W2003378093 hasRelatedWork W642559787 @default.
• W2003378093 hasVolume "53" @default.
• W2003378093 isParatext "false" @default.
• W2003378093 isRetracted "false" @default.
• W2003378093 magId "2003378093" @default.
• W2003378093 workType "article" @default.