Enhanced carboniferous magmatism reveals the paleo-tethys dual subduction system: New detrital zircon evidence from western Türkiye
JOURNAL OF ASIAN EARTH SCIENCES, cilt.311, 2026 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 311
- Basım Tarihi: 2026
- Doi Numarası: 10.1016/j.jseaes.2026.107271
- Dergi Adı: JOURNAL OF ASIAN EARTH SCIENCES
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Geobase, INSPEC, Zoological Record
- Recep Tayyip Erdoğan Üniversitesi Adresli: Evet
Özet
The tectonic evolution of the Paleo-Tethys Ocean in T & uuml;rkiye is controversial, especially the polarity of subduction. This study reports new detrital zircon U-Pb ages and trace-element data from Mesozoic-Cenozoic sandstones of the Tavs & cedil; anl & imath; Zone and the Taurides Belt, both belonging to or tectonically associated with the Anatolide-Tauride Block (ATB), to assess the extent and significance of Carboniferous magmatism. All sampled sandstones show prominent Carboniferous zircon populations. The pooled Tavs & cedil;anl & imath; dataset has a dominant peak at ca. 304 Ma and a subordinate Cadomian component at ca. 554 Ma, which displays Pontide-affinity age spectra. Their occurrence within the Cretaceous subduction accretionary complex suggests sediment supply from the adjacent Pontides upper plate to the trench-forearc system or recycling of older Pontide-derived clastic material, rather than direct transport across a wide-open oceanic basin. In contrast, the pooled Taurides dataset is characterized by a ca. 320 Ma peak together with prominent Pan-African and Tonian-Grenvillian components at ca. 641 and 973 Ma, respectively, which predominantly records ATB sources. Zircon trace elements indicate a continental-arc affinity, and epsilon Hf(t) compilations reveal systematically different magma source characteristics between Pontides and ATB Carboniferous arcs. Integrated stratigraphic, petrologic, and geochronological evidence supports a dual-subduction model: northward subduction beneath Laurasia coexisting with southward subduction beneath Gondwana.