Petrography, geochemistry, and provenance of Jurassic sandstones from the Sakarya Zone, NW Turkey

Abstract

The composition of sedimentary rocks reflects the erosional unroofing, tectonic uplift, and changes in climate and environment. The chemical composition of clastic sedimentary rocks is controlled by the composition of source rocks, hydraulic sorting, chemical weathering during diagenesis, and transport, which are affected by tectonic setting, climate, and the nature of the depositional environment (

APMdisc: An online computer program for the geochemical discrimination of siliciclastic sediments from active and passive margins

“…Major element geochemical data for 23 samples of Jurassic sandstone in the Sakarya Zone of NW Turkey were compiled from Sengün and Koralay (2019). Unfortunately, trace element data were not available for any of these samples.…”

“…These values were used for testing the robustness against analytical uncertainty. Finally, the robustness of some selected individual samples from the Sakarya Zone, NW Turkey (Sengün and Koralay, 2019), was also evaluated in terms of typical total uncertainties recently reported by Verma et al (2018Verma et al ( , 2019 for the analysis of geochemical reference materials.…”

“…The analytical uncertainties are seldom, if ever, presented for individual analyses, although recently Verma et al (2018Verma et al ( , 2019 demonstrated that it is feasible to do so provided that the calibration uncertainties are estimated and taken into account for total uncertainties. We used their total mean uncertainties to test the robustness of 4 individual samples reported by Sengün and Koralay (2019) in the Robustness module of analytical uncertainty. Only the major element-based diagram could be used.…”

“…The active margin sample Karacabey9 close to the tectonic field boundary having a probability of about 0.6819 for this field (Figure 8a) showed that 1910 replicates (out of 2200; equivalent to 86.8%) plotted in the same field and the remaining 290 (out of 2200; equivalent to 13.2%) did so in the passive margin field. This means that there is a certain finite probability of 13.2% that a replicate analysis of sample Karacabey9 will plot in the passive margin field, although the actual composition reported by Sengün and Koralay (2019) plotted in the active margin ( Figure 8a). The other active margin sample, Gönen3, with initial probability of about 0.9966, would almost always plot in its field, because out of 2200 replicates, only 1 plotted in the passive margin field (Figure 8a).…”

The Early Eocene Ekmekçi granodiorite porphyry in the Karacabey region(Sakarya Zone, NW Turkey)

“…In the Karacabey region, these basement units are unconformably overlain by Jurassic sandstone and carbonate (Ergül et al, 1986;Altıner, 1991;Sunal, 2012;Aysal et al, 2012a). Besides those direct occurrences of pre-Jurassic basements in the Sakarya Zone, a wide range Altunkaynak et al (2012) and the references therein, Altunkaynak and Dilek (2013), Gülmez et al (2013), Ersoy and Palmer (2013), Kasapoğlu et al (2016), Topuz and Okay (2017). of pre-Jurassic detrital zircon ages revealing the complete basement history of the Sakarya Zone was reported (Akdoğan et al, 2018;Şengün and Koralay, 2019).…”