Comparison of the Quaternary travertine sites in the Denizli extensional basin based on their depositional and geochemical data

Mehmet Özkul, Sándor Kele, Ali Gökgöz, Chuan Chou Shen, Brian Jones, Mehmet Oruç Baykara, I. Fórizs, Tibor Németh, Yu Wei Chang, Mehmet Cihat Alçiçek

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Abstract

In the Denizli Basin (Turkey), located in the western Anatolian extensional province, travertine and tufa deposition has been an ongoing process for at least 600,000years. Travertine bodies, which are 30 to 75m thick and each covers areas of 1 to 34km2, are up to 1km3 in volume.Today, spring waters in this area have temperatures of 19 to 57°C, are of the Ca-Mg-HCO3-SO4 type in the Pamukkale, Kelkaya and Pinarbaşi areas and the Ca-Mg-SO4-HCO3 type at Çukurbaǧ. Thermal waters along the northern margin of the basin are generally hotter than those in the east-southeast and south. The δ18O and δD values of the spring waters indicate a meteoric origin. The average temperatures of the hydrothermal systems in the Denizli Basin appear to have decreased from Pleistocene to Holocene.Travertine, which formed from the hotter water, is more widespread than the tufa that formed in the cooler spring waters. Deposition of the travertine, which formed largely on slopes, in depressions, and along fissure ridges (mostly on northern basin margins), was controlled by the interplay between various intrinsic and extrinsic parameters. The travertines are formed largely of calcite with only minor amounts of aragonite in some of the vertically banded, crystalline crust, raft and pisoid travertines found in some of the northern sites. The aragonitic samples, rich in Sr, are typically found around the spring orifices and along the central axis of the fissure ridges.The stable isotope values of the travertine found in the northwest and southeast parts of the basin are different. The δ13C values of the northern travertine deposits are more positive (3.7 to 11.7‰ VPBD) than those found in the south-southeast areas (-4 to 5.8‰ VPDB). In contrast, the travertine and tufa in the southeastern areas have higher δ18O values (-15.2 to -7.8‰ VPDB) than those of the northern areas (-16.6 to -4.8‰ VPDB). Available evidence indicates that spring activity and associated travertine precipitation in the Denizli Basin were controlled largely by tectonic activity rather than by climatic conditions.

Original languageEnglish
Pages (from-to)179-204
Number of pages26
JournalSedimentary Geology
Volume294
DOIs
Publication statusPublished - Aug 15 2013

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travertine
basin
tufa
spring water
fissure
comparison
thermal water
aragonite
hydrothermal system
stable isotope
calcite
temperature
Holocene
Pleistocene
crust
tectonics

Keywords

  • Denizli Basin
  • Geochemistry
  • Quaternary
  • Travertine
  • Western Turkey

ASJC Scopus subject areas

  • Geology
  • Stratigraphy

Cite this

Comparison of the Quaternary travertine sites in the Denizli extensional basin based on their depositional and geochemical data. / Özkul, Mehmet; Kele, Sándor; Gökgöz, Ali; Shen, Chuan Chou; Jones, Brian; Baykara, Mehmet Oruç; Fórizs, I.; Németh, Tibor; Chang, Yu Wei; Alçiçek, Mehmet Cihat.

In: Sedimentary Geology, Vol. 294, 15.08.2013, p. 179-204.

Research output: Contribution to journalArticle

Özkul, M, Kele, S, Gökgöz, A, Shen, CC, Jones, B, Baykara, MO, Fórizs, I, Németh, T, Chang, YW & Alçiçek, MC 2013, 'Comparison of the Quaternary travertine sites in the Denizli extensional basin based on their depositional and geochemical data', Sedimentary Geology, vol. 294, pp. 179-204. https://doi.org/10.1016/j.sedgeo.2013.05.018
Özkul, Mehmet ; Kele, Sándor ; Gökgöz, Ali ; Shen, Chuan Chou ; Jones, Brian ; Baykara, Mehmet Oruç ; Fórizs, I. ; Németh, Tibor ; Chang, Yu Wei ; Alçiçek, Mehmet Cihat. / Comparison of the Quaternary travertine sites in the Denizli extensional basin based on their depositional and geochemical data. In: Sedimentary Geology. 2013 ; Vol. 294. pp. 179-204.
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AU - Kele, Sándor

AU - Gökgöz, Ali

AU - Shen, Chuan Chou

AU - Jones, Brian

AU - Baykara, Mehmet Oruç

AU - Fórizs, I.

AU - Németh, Tibor

AU - Chang, Yu Wei

AU - Alçiçek, Mehmet Cihat

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N2 - In the Denizli Basin (Turkey), located in the western Anatolian extensional province, travertine and tufa deposition has been an ongoing process for at least 600,000years. Travertine bodies, which are 30 to 75m thick and each covers areas of 1 to 34km2, are up to 1km3 in volume.Today, spring waters in this area have temperatures of 19 to 57°C, are of the Ca-Mg-HCO3-SO4 type in the Pamukkale, Kelkaya and Pinarbaşi areas and the Ca-Mg-SO4-HCO3 type at Çukurbaǧ. Thermal waters along the northern margin of the basin are generally hotter than those in the east-southeast and south. The δ18O and δD values of the spring waters indicate a meteoric origin. The average temperatures of the hydrothermal systems in the Denizli Basin appear to have decreased from Pleistocene to Holocene.Travertine, which formed from the hotter water, is more widespread than the tufa that formed in the cooler spring waters. Deposition of the travertine, which formed largely on slopes, in depressions, and along fissure ridges (mostly on northern basin margins), was controlled by the interplay between various intrinsic and extrinsic parameters. The travertines are formed largely of calcite with only minor amounts of aragonite in some of the vertically banded, crystalline crust, raft and pisoid travertines found in some of the northern sites. The aragonitic samples, rich in Sr, are typically found around the spring orifices and along the central axis of the fissure ridges.The stable isotope values of the travertine found in the northwest and southeast parts of the basin are different. The δ13C values of the northern travertine deposits are more positive (3.7 to 11.7‰ VPBD) than those found in the south-southeast areas (-4 to 5.8‰ VPDB). In contrast, the travertine and tufa in the southeastern areas have higher δ18O values (-15.2 to -7.8‰ VPDB) than those of the northern areas (-16.6 to -4.8‰ VPDB). Available evidence indicates that spring activity and associated travertine precipitation in the Denizli Basin were controlled largely by tectonic activity rather than by climatic conditions.

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KW - Western Turkey

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