Cross-sectional anatomy and geodynamic evolution of the Central Pontide orogenic belt (northern Turkey)

Hippolyte, Jean-Claude; Espurt, Nicolás; Kaymakçı, Nuretdin; Sanğu, Ercan; Müller, Carla

doi:10.1007/s00531-015-1170-6

Cited by 35 publications

(43 citation statements)

References 47 publications

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“…The Pontides are a composite domain that, before the opening of the Black Sea during the Late Cretaceous, was connected to the southern margin of Eurasia (see Okay et al 2013;Hippolyte et al 2015 and references therein). The Pontides can be subdivided into the Istanbul Zone (PanAfrican basement and its Phanerozoic sedimentary cover), the Strandja Massif (upper Palaeozoic basement and its lower Mesozoic cover) and the Sakarya Zone, which is composed of upper Palaeozoic and lower Mesozoic accretionary complexes (e.g.…”

Section: Pontidesmentioning

confidence: 99%

Neotethyan closure history of western Anatolia: a geodynamic discussion

Pourteau

Oberhänsli

Candan

et al. 2015

Int J Earth Sci (Geol Rundsch)

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Section: Pontidesmentioning

confidence: 99%

Neotethyan closure history of western Anatolia: a geodynamic discussion

Pourteau

Oberhänsli

Candan

et al. 2015

Int J Earth Sci (Geol Rundsch)

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“…Although several studies have focused on this composite tectonostratigraphic, deformational, metamorphic, and magmatic history (e.g., Aygül et al, ; Çimen et al, , ; Espurt et al, ; Frassi et al, ; Okay et al, , , , ; Ustaömer & Robertson, ; Yıldırım et al, ), the timing of major Cenozoic events is only constrained by stratigraphic data. The spatially discontinuous nature of the sedimentary deposits, sedimentary hiatuses (Hippolyte et al, , ; Okay et al, , , ; Tüysüz et al, ), and limited age information for continental sediments younger than the Late Eocene, however, does not allow us to reconstruct the most recent history of the Pontides and link it to the major geodynamic events. That history notably included the development of the North Anatolian Fault (NAF) and potential topographic growth of the Central Pontides associated with transpression (Ellero et al, ; Schildgen et al, ; Yıldırım et al, ; Yıldırım, Melnick, et al, ; Yıldırım, Schildgen, et al, ).…”

Section: Introductionmentioning

confidence: 99%

Multiple Exhumation Phases in the Central Pontides (N Turkey): New Temporal Constraints on Major Geodynamic Changes Associated With the Closure of the Neo‐Tethys Ocean

et al. 2018

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The Central Pontides of N Turkey represents a mobile orogenic belt of the southern Eurasian margin that experienced several phases of exhumation associated with the consumption of different branches of the Neo-Tethys Ocean and the amalgamation of continental domains. Our new low-temperature thermochronology data help to constrain the timing of these episodes, providing new insights into associated geodynamic processes. In particular, our data suggest that exhumation occurred at (1)~110 to 90 Ma, most likely during tectonic accretion and exhumation of metamorphic rocks from the subduction zone; (2) from~60 to 40 Ma, during the collision of the Kirşehir and Anatolide-Tauride microcontinental domains with the Eurasian margin; (3) from~40 to 25 Ma, either during the early stages of the Arabia-Eurasia collision (soft collision) when the Arabian passive margin reached the trench, implying 70 to 530 km of subduction of the Arabian passive margin, or during a phase of trench advance predating hard collision at 20 Ma; and (4)~11 Ma to the present, during transpression associated with the westward motion of Anatolia. Our findings document the punctuated nature of fault-related exhumation, with episodes of fast cooling followed by periods of slow cooling or subsidence, the role of inverted normal faults in controlling the Paleogene exhumation pattern, and of the North Anatolian Fault in dictating the most recent pattern of exhumation.

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“…Nannofossils and foraminiferal content constrain the depositional age of this volcaniclastic turbiditic sequence to the Campanian‐Maastrichtian (Aydın et al, ; Gedik & Korkmaz, ; Hippolyte et al, ; Leren et al, ; Okay et al, ; Özcan & Özkan‐Altıner, ; Özkan‐Altiner & Özcan, ; this study). The turbidites become gradually more calcareous upward and pass into white deep‐marine marl and calciturbidites of Akveren formation with depositional ages of Maastrichtian to Paleocene (Aydın et al, ; Leren et al, ; Okay et al, ; Figures and f).…”

Section: Geological Frameworkmentioning

confidence: 66%

“…An important change in the sedimentation occurred in the Santonian with the deposition of red pelagic limestones, which lie unconformably over the older stratigraphic units. The red pelagic limestones, possibly represent the breakup unconformity and the initiation of the oceanic spreading in the Black Sea basins (Görür, ; Görür et al, ), and are associated with volcanic rocks (Hippolyte et al, , ; Okay et al, , ; Tüysüz et al, ). Arc volcanism started in the Coniacian and continued into Campanian (Figure ).…”

Section: Geological Frameworkmentioning

confidence: 99%

Striking Variation in the Provenance of the Lower and Upper Cretaceous Turbidites in the Central Pontides (Northern Turkey) Related to the Opening of the Black Sea

2019

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The Lower and Upper Cretaceous turbidites cover large areas in the central Pontides (north-central Turkey). The Lower Cretaceous turbidites are over 2 km thick and are exposed in an area of 400 × 90 km. The Upper Cretaceous (Campanian-Maastrichtian) forearc turbidites are up to 1,200 m thick and crop out in NW-SE trending elongate basins about 40 km wide, extending along the central and eastern Pontides. We present new detrital zircon U-Pb ages, petrography, and paleocurrent measurements from the Campanian-Maastrichtian turbidites and compare them to those from the Lower Cretaceous turbidites. The Campanian-Maastrichtian sandstones are dominated by carbonate and magmatic lithic grains. The paleocurrents indicate paleoflow directions parallel to the axis of the basin. The sandstones are dominated by Late Cretaceous zircons indicating derivation mainly from the coeval magmatic arc. In contrast, the Lower Cretaceous sandstones are dominated by quartz and feldspar, and paleocurrents indicate southward transport. The detrital zircons in the Lower Cretaceous sandstones are mainly Archean and Paleoproterozoic, indicating that in the Early Cretaceous, the source of turbidites was from the Archean-Paleoproterozoic Ukrainian Shield to the north. After the opening of the Black Sea in the Late Cretaceous, the connection between the Pontides and the East European Platform was severed and the Campanian-Maastrichtian turbidites were sourced principally from the magmatic arc in the Pontides. Our results indicate that the Campanian-Maastrichtian turbidites represent the first turbiditic sequence deposited after the opening of the Black Sea.

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Cross-sectional anatomy and geodynamic evolution of the Central Pontide orogenic belt (northern Turkey)

Cited by 35 publications

References 47 publications

Neotethyan closure history of western Anatolia: a geodynamic discussion

Neotethyan closure history of western Anatolia: a geodynamic discussion

Multiple Exhumation Phases in the Central Pontides (N Turkey): New Temporal Constraints on Major Geodynamic Changes Associated With the Closure of the Neo‐Tethys Ocean

Striking Variation in the Provenance of the Lower and Upper Cretaceous Turbidites in the Central Pontides (Northern Turkey) Related to the Opening of the Black Sea

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