Please use this identifier to cite or link to this item: https://hdl.handle.net/11499/10157
Title: The origin and determination of silica types in the silica occurrences from Altintaş region (Uşak-Western Anatolia) using multianalytical techniques
Authors: Koralay, Tamer
Kadıoğlu, Yusuf Kağan
Keywords: AltIntaş-Uşak region
Confocal Raman spectrometer
Hydrothermal solution
Oxygen isotopes
Silica occurrences
Isotopes
Quartz
Sedimentology
Spectrometry
Basaltic magma
Confocal Raman
Low temperatures
Sedimentary structure
Spider diagrams
Western Anatolia
Temperature
barium
calcium
iron
mineral
oxygen
phosphorus
silicon dioxide
chemistry
geology
procedures
Raman spectrometry
sediment
spectrometry
Turkey
X ray diffraction
Barium
Calcium
Geologic Sediments
Geology
Iron
Minerals
Oxygen Isotopes
Phosphorus
Silicon Dioxide
Spectrometry, X-Ray Emission
Spectrum Analysis, Raman
X-Ray Diffraction
Publisher: Elsevier B.V.
Abstract: The studied area is located in Western Anatolia and situated on the NE-SW directed Uşak-Güre cross-graben that developed under a crustal extensional regime during the Late Miocene-Pliocene. Silica occurrences have been mostly found as mushroom-shaped big caps. They also show sedimentary structures such as stratification. Silica occurrences are milky white, yellowish white, yellow to chocolate brown and rarely pale blue, bluish gray in color and have no crystal forms in hand specimen. Some of the silica samples show conchoidal fracture. Silica minerals are mostly chalcedony, low-quartz (?-quartz) and sporadically opal-CT in spectras, according to confocal Raman spectrometry. The silica samples have enrichment of Fe (1000-24,600 ppm), Ca (100-10,200 ppm), P (4-3950 ppm) and Mn (8-3020 ppm). Other striking elements in fewer amounts are Ba (0.9-609.6 ppm), Ni (15.7-182.3 ppm) and Co (18.6-343.1 ppm). In chondrite-normalized spider diagram, silica samples display partial enrichment in LIL elements (Rb, Ba, Th). The ?18O (‰ V-SMOW) values for silica samples vary from 18.4‰ to 22.8‰ and are similar to low temperature hydrothermal silica. Confocal Raman spectrometry and oxygen isotope indicate that the silica minerals may precipitate from host fluid which is relatively has low temperatures hydrothermal solutions derived from the residual melt of basaltic magma. © 2014 Elsevier B.V. All rights reserved.
URI: https://hdl.handle.net/11499/10157
https://doi.org/10.1016/j.saa.2014.08.027
ISSN: 1386-1425
Appears in Collections:Mühendislik Fakültesi Koleksiyonu
PubMed İndeksli Yayınlar Koleksiyonu / PubMed Indexed Publications Collection
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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