Petrogenesis of the late Cretaceous Turnagöl intrusion in the eastern Pontides: Implications for magma genesis in the arc setting

Kaygusuz, Abdullah; Sipahi, Ferkan; İlbeyli, Nurdane; Arslan, Mehmet; Chen, Bin; Aydınçakır, Emre

doi:10.1016/j.gsf.2012.09.003

Cited by 58 publications

(21 citation statements)

References 86 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In this paper, we present new zircon U‐Pb age, Hf‐O isotopic, whole‐rock major and trace element, and Nd isotopic data of the plutonic rocks from Güdül to Torul in the EP (Figure c). Our data, together with the data from the adjacent regions in the literature (Tables S1 and S2; e.g., Karsli, Dokuz, Uysal, Aydin, Chen, et al, ; Kaygusuz et al, , , ), reveal the presence of approximately 91–75 Ma magmatism with a compositional transition from low‐K to high‐K calc‐alkaline series at approximately 84 Ma. These results, in combination with the changes of sedimentary facies before and after the Upper Santonian (approximately 84 Ma) (Bektaş et al, ; Eyuboglu et al, ), allow us to attribute the changes of magma composition to the slab rollback of the southward subducting Black Sea (Paleotethys) oceanic lithosphere at approximately 84 Ma.…”

Section: Introductionsupporting

confidence: 65%

“…The Nd‐Hf isotopic variations of the Late Cretaceous magmatism match well with the geophysical results nowadays. Nd‐Hf isotopic data in the literature are from Dokuz (), Karsli, Dokuz, Uysal, Aydin, Chen et al (), Karsli et al (), Kaygusuz and Aydincakir (), Kaygusuz and Sen (), Kaygusuz et al (, , , , , , ), and Topuz et al ().…”

Section: Discussionmentioning

confidence: 99%

“…In each part, the volcanic rocks are compositionally from basalt‐andesite in the bottom, grading upward into the dacite‐rhyolite and their pyroclastics, interbedded with limestone and marl (Eyuboglu et al, , ). The intrusions intruded into the Jurassic‐Cretaceous volcano‐sedimentary strata and are dominated by intermediate‐felsic rocks, including quartz monzonite, quartz monzodiorite, tonalite, granodiorite, and monzogranite (e.g., Eyuboglu, ; Kaygusuz et al, , ; Özdamar, ). Existing zircon U‐Pb age data indicate that these granitoids were emplaced at 88–75 Ma (Table S2 in the supporting information).…”

Section: Geological Backgroundmentioning

confidence: 99%

“…Eyuboglu (2015), Eyuboglu et al (2010Eyuboglu et al ( , 2014, Karsli, Dokuz, Uysal, Aydin, Chen et al (2010), Karsli, Caran, et al (2012), , Karsli et al (2018); Karsli, Caran, et al (2012), Kaygusuz and Aydincakir (2011), , Kaygusuz et al (2008Kaygusuz et al ( , 2009Kaygusuz et al ( , 2010Kaygusuz et al ( , 2012Kaygusuz et al ( , 2013Kaygusuz et al ( , 2014Kaygusuz et al ( , 2016, Moore et al (1980), Özdamar (2016), and Sipahi and Sadıklar (2014). Kaygusuz et al, , 2013Kaygusuz et al, , 2014, reveal the presence of approximately 91-75 Ma magmatism with a compositional transition from low-K to high-K calc-alkaline series at approximately 84 Ma. These results, in combination with the changes of sedimentary facies before and after the Upper Santonian (approximately 84 Ma) (Bektaş et al, 2001;Eyuboglu et al, 2014), allow us to attribute the changes of magma composition to the slab rollback of the southward subducting Black Sea (Paleotethys) oceanic lithosphere at approximately 84 Ma.…”

Section: Introductionmentioning

confidence: 98%

“…Abbreviations: AP = Arabian Platform; EP = eastern Pontides; CP = central Pontides; WP = western Pontides; TAP = Tauride‐Anatolide platform; KM = Kırşehir massif; IAE = İzmir‐Ankara‐Erzincan belt; IT = Inner Tauride belt; BZ = Bitlis‐Zagros suture; NAF = north Anatolian fault; NEAF = northeast Anatolian fault. Age data in the literature are from Eyuboglu (), Eyuboglu et al (, ), Karsli, Dokuz, Uysal, Aydin, Chen et al (), Karsli, Caran, et al (), Karsli, Dokuz, et al (), Karsli et al (); Karsli, Caran, et al (), Kaygusuz and Aydincakir (), Kaygusuz and Sen (), Kaygusuz et al (, , , , , , , ), Moore et al (), Özdamar (), and Sipahi and Sadıklar ().…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Transition From Low‐K to High‐K Calc‐Alkaline Magmatism at Approximately 84 Ma in the Eastern Pontides (NE Turkey): Magmatic Response to Slab Rollback of the Black Sea

et al. 2018

View full text Add to dashboard Cite

Compositional changes of magma in space and time can be used to infer mantle dynamics and crust‐mantle interaction that are responsible for the generation of magma and evolution. This study reveals, for the first time, the presence of magma compositional transition at approximately 84 Ma in the eastern Pontides arc (NE Turkey), providing important insights into the mantle dynamics responsible for the generation of the extensive Late Cretaceous arc magmatism. The Late Cretaceous granitoids can be divided geochemically into two groups. Group I samples were emplaced at 91–86 Ma and are characterized by low K2O/Na2O, whereas Group II samples were emplaced at 83–78 Ma and display high K2O/Na2O. Group I samples have positive zircon εHf (t), whole‐rock ɛNd (t), and mantle‐like zircon δ18O, which significantly differs from the Group II samples with negative to positive εHf (t), negative whole‐rock ɛNd (t), and enhanced zircon δ18O. The Nd‐Hf‐O isotopic compositions of the Group I and II samples can be quantitatively interpreted as being derived from partial melting of the low‐K amphibolite source within the juvenile lower arc crust that incorporated 5–30% and 50–60% enriched components from the basement rocks into the magmatic systems, respectively. Considering the occurrences of regional thermal subsidence and extensional structure during the Late Cretaceous, the compositional transition from Group I to II and the coeval magmatic flare‐up represented by Group II samples can be linked with the slab rollback of the southward subducting Black Sea (Paleotethys) oceanic lithosphere.

show abstract

Section: Introductionsupporting

confidence: 65%

Section: Discussionmentioning

confidence: 99%

Section: Geological Backgroundmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Transition From Low‐K to High‐K Calc‐Alkaline Magmatism at Approximately 84 Ma in the Eastern Pontides (NE Turkey): Magmatic Response to Slab Rollback of the Black Sea

et al. 2018

View full text Add to dashboard Cite

show abstract

Petrogenesis and tectonic implications of the quartz diorites and mafic microgranular enclaves in the Asiha gold ore deposit in the East Kunlun orogenic belt: Evidence from zircon U–Pb dating, geochemistry, and Sr–Nd–Hf isotopes

et al. 2021

View full text Add to dashboard Cite

Calc‐alkaline granitoid intrusions with abundant mafic microgranular enclaves (MMEs) are widespread in the East Kunlun orogenic belt (EKOB). Here, we present petrological observations, zircon U–Pb ages, whole‐rock geochemical, and Sr–Nd–Hf isotopic data for quartz diorites and the MMEs in the Asiha gold ore deposit in the EKOB, to constrain their petrogenesis and tectonic setting. The laser ablation inductively coupled plasma mass spectrometer 206Pb–238U ages of zircons indicate that the host quartz diorites and their MMEs from the Asiha gold deposit crystallized at 228.4 ± 1.7 Ma and 229.0 ± 1.7 Ma, respectively, which is similar to the gold mineralization age. Whole‐rock geochemical data indicate that the quartz diorites are I‐type granites. The MMEs have εHf(t) values of −7.6 to −0.2, −2.1 on average, whereas those of the quartz diorites range from −3.2 to −0.8, with a mean value of −2.1, which is identical within analytical uncertainty. Moreover, the host quartz diorites and their MMEs have relatively homogeneous Sr–Nd isotopic compositions, with high initial 87Sr/86Sr ratios and low εNd(t) values ranging from 0.70914 to 0.70963 and from −5.9 to −5.5, respectively. In summary, the MMEs and host quartz diorites have similar geochemical characteristics, indistinguishable Sr–Nd–Hf isotopic composition, and almost simultaneous crystallization age. Geochemical evidence shows that they formed due to the mixing of crust‐ and mantle‐derived magmas. Combined with our new results and published geological, geochronological, and geochemical data, this paper proposes that the EKOB had evolved into a post‐collisional environment at about 230–228 Ma, and the host quartz diorites and their MMEs from the Asiha complex formed in the transitional stage from the syn‐collisional to the post‐collisional setting.

show abstract

Tectonic Domains and Tectonic Units in Asian Continent

Wan

2020

The Tectonics and Metallogenesis of Asia

View full text Add to dashboard Cite

Petrogenesis of the late Cretaceous Turnagöl intrusion in the eastern Pontides: Implications for magma genesis in the arc setting

Cited by 58 publications

References 86 publications

Transition From Low‐K to High‐K Calc‐Alkaline Magmatism at Approximately 84 Ma in the Eastern Pontides (NE Turkey): Magmatic Response to Slab Rollback of the Black Sea

Transition From Low‐K to High‐K Calc‐Alkaline Magmatism at Approximately 84 Ma in the Eastern Pontides (NE Turkey): Magmatic Response to Slab Rollback of the Black Sea

Petrogenesis and tectonic implications of the quartz diorites and mafic microgranular enclaves in the Asiha gold ore deposit in the East Kunlun orogenic belt: Evidence from zircon U–Pb dating, geochemistry, and Sr–Nd–Hf isotopes

Tectonic Domains and Tectonic Units in Asian Continent

Contact Info

Product

Resources

About