A combined polarizing microscope, XRD, SEM, and specific gravity study of the petrified woods of volcanic origin from the Camlidere-Celtikci-Gudul fossil forest, in Ankara, Turkey

HATİPOĞLU M., Turk N.

JOURNAL OF AFRICAN EARTH SCIENCES, cilt.53, ss.141-157, 2009 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 53
  • Basım Tarihi: 2009
  • Doi Numarası: 10.1016/j.jafrearsci.2009.01.001
  • Dergi Adı: JOURNAL OF AFRICAN EARTH SCIENCES
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.141-157
  • Anahtar Kelimeler: Coniferous and oak petrified woods, Chalcedony, Moganite, Specific gravity, X-ray diffraction, Camlidere-Celtikci-Gudul fossil forest, STRUCTURAL CHARACTERISTICS, TERTIARY VOLCANISM, CRYSTAL-STRUCTURE, SILICA POLYMORPH, NATIONAL-PARK, QUARTZ, MICROCRYSTALLINE, MOGANITE, OPAL, PROVINCE
  • Dokuz Eylül Üniversitesi Adresli: Evet

Özet

The fossil forest in the Camlidere-Celtikci-Gudul 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.