The upper Coniacian to upper Santonian drowned Arabian carbonate platform, the Mardin-Mazidag area, SE Turkey: Sedimentological, stratigraphic, and ichthyofaunal records


YILMAZ İ. Ö. , Cook T. D. , Hosgor I., Wagreich M., Rebman K., Murray A. M.

CRETACEOUS RESEARCH, vol.84, pp.153-167, 2018 (Peer-Reviewed Journal) identifier identifier

  • Publication Type: Article / Article
  • Volume: 84
  • Publication Date: 2018
  • Doi Number: 10.1016/j.cretres.2017.09.012
  • Journal Name: CRETACEOUS RESEARCH
  • Journal Indexes: Science Citation Index Expanded, Scopus
  • Page Numbers: pp.153-167
  • Keywords: Late Coniacian - Late Santonian, Drowned Arabian carbonate platform, SE Turkey, Elasmobranch teeth, EVOLUTION, RESERVOIRS, EOCENE, JORDAN

Abstract

A measured stratigraphic section including the upper Coniacian - upper Santonian interval in the Mardin-Mazidag area in Southeastern Turkey lies on the Arabian Platform and documents the drowning of the Arabian platform. The studied succession transgressively overlies the exposed carbonate platform and exhibits a relatively condensed sequence characterized by presence of fish remains, phosphate nodules, oncoids, phosphatic fragments, glauconites and planktonic foraminifera. Calcareous nanno-fossils attest a late Coniacian to late Santonian age (zones UC11 - UC12). Numerous elasmobranch teeth are also present in this pelagic fades, representing mackerel sharks (Squalicorax, Pseudocorax and Scapanorhynchus) and a ray (Ctenopristis). The presence of pelagic facies and phosphate deposits on the drowned platform may indicate a sudden rise of sea level and increase of nutrient due to upwelling currents. The collapse parts of the Arabian carbonate platform occurred earlier than previously reported, starting from late Coniacian-Santonian onwards. (C) 2017 Elsevier Ltd. All rights reserved.