Roveacrinid microfacial assemblages (Roveacrinida, Crinoidea) from the Lower-Middle Cenomanian of the Adıyaman area (SE Turkey)

Mülayim, Oğuz; Yılmaz, İsmail Ömer; Ferré, Bruno

doi:10.1007/s12517-018-3901-z

Cited by 5 publications

(17 citation statements)

References 19 publications

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“…Derdere Formation material from wells in the Adıyaman region, over 100 km to the north-west of Derik, have yielded roveacrinid fragments (Mülayim et al, 2018). Here, the Derdere Formation is thought to be early-middle Cenomanian, in part based on the roveacrinids present.…”

Section: Previous Workmentioning

confidence: 97%

“…It is mainly composed of an alternation of thickbedded limestones, dolomitic limestones, and dolostones. The Derdere Formation is normally separated by a slight hiatus from the overlying Turonian-lower Campanian Karababa Formation (Mülayim et al, 2019a). The Karababa Formation is composed of an alternation of organic-rich pelagic limestones, cherty limestones, and bioclastic limestones, comprising members A, B, and C, respectively.…”

Section: Geologic Settingmentioning

confidence: 99%

“…Çelikdemir et al, 1991;Görür et al, 1991;Cater and Gillcrist, 1994;Cros et al, 1999;Demirel and Guneri, 2000;Robertson et al, 2016;Mülayim et al, 2016;Özkan and Altıner, 2019) or Albian (Özkan and Altıner, 2019). Others differ on which part of the Cenomanian the formation should be assigned to (compare Mülayim et al, 2018Mülayim et al, , 2020. Whilst most papers agree that the Derdere Formation represents deposition on a shallow marine carbonate platform, deeper water intervals are recognised, sometimes at the base of the formation and sometimes towards the top.…”

Section: Previous Workmentioning

confidence: 99%

“…An important paper is that of Mülayim et al (2019a), who studied the Derdere and overlying Karababa formations at outcrop atİnişdere, in the Adıyaman region. Here, the authors were able to demonstrate that, at this locality at least, the base of the Karababa Formation corresponds to the Cenomanian-Turonian Boundary Event, where anoxia and sea level rise contribute to the demise of the Derdere carbonate platform.…”

Section: Previous Workmentioning

confidence: 99%

“…Özkan and Altıner (2019) did not record the species in their study of the Derdere Formation, although they did record other or indeterminate species of Whiteinella from the upper part of the formation. Mülayim et al (2019a) recorded and illustrated W. aprica from the lower part of the Karababa Formation that overlies the Derdere Formation.…”

Section: Planktonic Foraminiferamentioning

confidence: 99%

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Micropalaeontology, biostratigraphy, and depositional setting of the mid-Cretaceous Derdere Formation at Derik, Mardin, south-eastern Turkey

Simmons

Vicedo

Yılmaz³

et al. 2020

J. Micropalaeontol.

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Abstract. The micropalaeontology of the mid-Cretaceous Derdere Formation (Mardin Group) from outcrops close to the town of Derik in south-eastern Turkey is described here. In thin sections from the carbonates that form the majority of this formation, rich and diverse micropalaeontological assemblages are present. These include larger benthonic foraminifera, planktonic foraminifera, and other microfossils, including calcareous algae. Alveolinid foraminifera are particularly common and include a new species – Simplalveolina mardinensis. In contrast to some previous studies, the majority of the section can be demonstrated to be Cenomanian (notably middle Cenomanian) in age with no confirmation of extension into the Albian or Turonian. Deposition took place on a carbonate ramp within a range of discrete deposition settings ranging from peritidal to outer ramp. A notable feature is the small-scale (a few metres) shallowing-up cycles within the inner-ramp facies that may be allocyclic or autocyclic in origin. Three major deepening events are recognised within the succession, characterised by more open marine microfauna and microfacies. These occur at the base of the formation, within the mid-Cenomanian lower part, and towards the top of the formation. These may correlate with three Cenomanian deepening phases seen in other parts of the Arabian Plate.

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Section: Previous Workmentioning

confidence: 97%

Section: Geologic Settingmentioning

confidence: 99%