• Türkçe
    • English
  • English 
    • Türkçe
    • English
  • Login
View Item 
  •   DSpace Home
  • Mühendislik Fakültesi
  • Jeoloji Mühendisliği Bölümü
  • Jeoloji Mühendisliği Bölümü Tez Koleksiyonu
  • View Item
  •   DSpace Home
  • Mühendislik Fakültesi
  • Jeoloji Mühendisliği Bölümü
  • Jeoloji Mühendisliği Bölümü Tez Koleksiyonu
  • View Item
JavaScript is disabled for your browser. Some features of this site may not work without it.

Kapadokya İgnimbiritlerinin Ana Kaya ve Alterasyon Mineralojisi ile Yerinde Ölçülen Ultrasonik Atım Hızları Arasındaki İlişkinin İncelenmesi

View/Open
Yüksek Lisans Tezi (33.66Mb)
Date
2019
Author
Yurdakul, Yasin
xmlui.mirage2.itemSummaryView.MetaData
Show full item record
Abstract
The Middle Miocene-Late Quaternary volcanism produced 10 major ignimbrite deposits separated by terrestrial-lacustrine sediments and lava flows in Central Anatolian Volcanic Province. These ignimbrite deposits have been exposed to alteration and secondary filling processes as a result of hydrothermal activity during and after their depositions in various regions. Amorphous juvenile glass in ignimbrites are observed to devitrify into zeolites, opal-A, opal-CT, clay group minerals and occasionally into sulphate minerals as a result of the alteration processes. Secondary fillings are usually represented by carbonate and seldomly by sulphate crystallisation via the fracture – crack systems. The aim of this thesis, supported by TUBITAK (Project No: 113Y439), is to investigate the relationships between mineralogical-petrographical features of Cappadocia ignimbrites and the ultrasonic pulse velocity (UPV) measured in-situ on the outcrops. The ultrasonic pulse velocity measurements were performed in 9 different ignimbrite deposits (Kavak, Zelve, Cemilköy, Sarımadentepe, Sofular, Tahar, Gördeles, Kızılkaya and Valibabatepe). It was observed that the petrographical features of ignimbrites directly affected the propagation velocity of the ultrasonic pulses. Particularly, the ultrasonic pulse velocities in altered rocks are significantly different than those measured in unaltered counterparts. The pyrogenic and alteration mineral assemblages of ignimbrites were identified and their porosities have been calculated with SEM-EDS and X-ray microtomography analyses. It was determined that the devitrification induced secondary crystallisation caused an increase in the amount of crystals and resulted with a decrease in porosity and an increase in welding. Therefore, it was measured that ultrasonic pulses were moving faster in devitrified ignimbrites than their equivalents that have not gone through alteration. In conclusion, this thesis study reveals that the easy-to-measure in-situ ultrasonic pulse velocity is a function of the petrography of the rock unit and can be correlated with its degree of alteration.
URI
http://hdl.handle.net/11655/9318
xmlui.mirage2.itemSummaryView.Collections
  • Jeoloji Mühendisliği Bölümü Tez Koleksiyonu [101]
Hacettepe Üniversitesi Kütüphaneleri
Açık Erişim Birimi
Beytepe Kütüphanesi | Tel: (90 - 312) 297 6585-117 || Sağlık Bilimleri Kütüphanesi | Tel: (90 - 312) 305 1067
Bizi Takip Edebilirsiniz: Facebook | Twitter | Youtube | Instagram
Web sayfası:www.library.hacettepe.edu.tr | E-posta:openaccess@hacettepe.edu.tr
Sayfanın çıktısını almak için lütfen tıklayınız.
Contact Us | Send Feedback



DSpace software copyright © 2002-2016  DuraSpace
Theme by 
Atmire NV
 

 


DSpace@Hacettepe
huk openaire onayı
by OpenAIRE

About HUAES
Open Access PolicyGuidesSubcriptionsContact

livechat

sherpa/romeo

Browse

All of DSpaceCommunities & CollectionsBy Issue DateAuthorsTitlesSubjectsTypeDepartmentPublisherLanguageRightsIndexing SourceFundingxmlui.ArtifactBrowser.Navigation.browse_subtypeThis CollectionBy Issue DateAuthorsTitlesSubjectsTypeDepartmentPublisherLanguageRightsIndexing SourceFundingxmlui.ArtifactBrowser.Navigation.browse_subtype

My Account

LoginRegister

Statistics

View Usage Statistics

DSpace software copyright © 2002-2016  DuraSpace
Theme by 
Atmire NV