A NEW PRIABONIAN<i>HETEROSTEGINA</i>FROM THE EASTERN TETHYS (SULAIMAN FOLD BELT, WEST PAKISTAN): IMPLICATIONS FOR THE DEVELOPMENT OF EASTERN TETHYAN HETEROSTEGINES AND THEIR PALEOBIOGEOGRAPHY

Özcan, Ercan; Ali, Nauman; Hanif, Muhammad; Hashmi, Syed Irfanullah; Khan, Abdullah; Yücel, Ali Osman; Abbasi, İftikhar Ahmed

doi:10.2113/gsjfr.46.4.393

Cited by 8 publications

(6 citation statements)

References 25 publications

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“…These specimens are not comparable to those from the Bartonian-Priabonian Heterostegina in the Western Tethys and Priabonian of Indo-Malayan region and Pacific, and thus a new species, H. indusensis n. sp., was created by Özcan, et al [14]. Therefore, application of evolutionary scheme of H. reticulata lineage [4] for a high-resolution dating of the Priabonian deposits of the Sulaiman range is not possible.…”

Section: Results and Interpretationmentioning

confidence: 99%

“…The Drazinda formation was previously dated as middle to late Eocene based on calcareous nannofossils [10], planktonic foraminifera [11][12][13], and larger benthic foraminifera [14][15][16]. According to Köthe, et al [10], the age of Drazinda formations in the Rakhi Nala section is Middle Eocene to Priabonian based on nannoplankton zones NP 16-19/20.…”

Section: Geological Setting and Age Of The 'Pellatispira-beds' (Drazinda Formation) In The Sulaiman Fold Beltmentioning

confidence: 99%

“…The upper part of the Drazinda Formation, the Pellatispira-beds, yielded NP18-19/20 calcareous nannofossil assemblages in the Rakhi Nala section pointing out Priabonian age [10]. Özcan, et al [14,15] assigned a Priabonian age to the Pellatispira-beds based on the occurrence of Silvestriella tetraedra (Gümbel), Pellatispira madaraszi (Hantken), Heterostegina indusensis Özcan, Ali, Hanif, Assilina ex. gr.…”

Section: Geological Setting and Age Of The 'Pellatispira-beds' (Drazinda Formation) In The Sulaiman Fold Beltmentioning

confidence: 99%

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Reticulate Nummulites (N. fabianii Linage) and Age of the Pellatispira-Beds of the Drazinda Formation, Sulaiman Range, Pakistan

Özcan¹

2019

IJPBP

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The Eocene shallow marine Pellatispira-beds in the upper part of the Drazinda Formation represent the latest phase of Cenozoic Tethyan marine deposition in the Sulaiman Range, West Pakistan. The unit consists of stratigraphically important taxa as Heterostegina,Silvestriella, Pellatispira, a new Baculogypsina (possibly ancestral to modern Baculogypsina) and reticulate Nummulites implying a latest middle to late Eocene (late Bartonian-Priabonian) age. A more precise age of the unit requires the biometric study of reticulate Nummulites, the evolutionary scheme of which is better known from the peri-Mediterranean region in the Tethys. This group, which was subdivided into a series of successive chrono-species based on the biometry of inner cross-diameter of proloculus and changes in the types of granulation/reticulation on the test surface in the late Eocene-late Oligocene interval, appears to have a significant biostratigraphic potential for a high-resolution biostratigraphy in the peri-Mediterranean region (Western Tethys). The reticulate Nummulites in two samples from Rakhi Nala and Zinda Pir, ZP22 and RNB10, were studied and compared with those from the peri-Mediterranean region. The isolated specimens have a weak surface granulation externally, a distinct small umbonal granule (pile) and typical reticulation. The samples ZP22 and RNB10 from Zinda Pir and and Rakhi Nala sections have an average inner cross diameter of proloculus of 152.0 and 153.0 μm respectively. The reticulate Nummulites in both samples are assigned to N. hormoensis, a chrono-species characteristic for the shallow benthic zone (SBZ 18), referable to latest Bartonian-early Priabonian time interval. Since Heterostegina in peri-Mediterranean region and in Pakistan belongs to different lineages, a correlation of N. hormoensis in the studied samples with the wellestablished evolutionary scheme of Heterostegina reticulata and H.armenica lineages from the Western Tethys was not possible.

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Section: Results and Interpretationmentioning

confidence: 99%

Section: Geological Setting and Age Of The 'Pellatispira-beds' (Drazinda Formation) In The Sulaiman Fold Beltmentioning

confidence: 99%

Section: Geological Setting and Age Of The 'Pellatispira-beds' (Drazinda Formation) In The Sulaiman Fold Beltmentioning

confidence: 99%

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Reticulate Nummulites (N. fabianii Linage) and Age of the Pellatispira-Beds of the Drazinda Formation, Sulaiman Range, Pakistan

Özcan¹

2019

IJPBP

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“…Using the classification of Dunham (1962), the black (meta)limestone turned out to be a bioclast (meta)wackestone to (meta)packstone. Apart from a large number of reticulate nummulitids, there are ?lepidocyclinids, orthophragminids and operculinids, some of which may belong to Heterostegina (see also Özcan et al 2016a, 2016b). The presence of Pellatispira madaraszi (Fig.…”

Section: Resultsmentioning

confidence: 99%

“…Apart from nummulitids, the middle-upper Eocene carbonates of the Neotethys realm contain orthophragminids, alveolinids and rotaliids, which have been frequently used for biostratigraphic studies (e.g. Schaub 1981; Serra-Kiel et al 1998; BouDagher-Fadel, 2008; Less et al, 2008; Özcan et al 2010, 2016a, 2016b; Cotton & Pearson, 2011; Papazzoni et al 2017; Özcan et al 2019, and references therein). Such microfossils have also been found in the studied samples and could be used for constraining the biostratigraphic age of the black (meta)limestones, which will be compared with the U-Pb age obtained from calcite fibres of the Nummulite tests.…”

Section: Introductionmentioning

confidence: 99%

Cenozoic evolution of the Tripolitza carbonate platform in the Tethyan realm: new age constraints on deposition, diagenesis, metamorphism and nappe emplacement based on U-Pb and Rb-Sr dating (External Hellenides, Crete)

Klein¹,

Zulauf

Evans

et al. 2023

Geol. Mag.

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We present kinematic, radiometric, geochemical and PT data, which help to constrain the tectonometamorphic evolution of the Tripolitza Unit (TPU). The age of both the metamorphic peak (P = 0.4 ±0.2 GPa, T = ca. 310 °C) and top-to-the WNW mylonitic thrusting, attributed to the emplacement of the hanging Pindos nappe, has been constrained at 19 ±2.5 Ma using Rb-Sr on synkinematic white mica of a basal mylonite of NW Crete. This early tectonic event is also documented by the oldest generation of veins, which cut through less metamorphic (T = 240 ±15 °C) late Bartonian/Priabonian Nummulite limestone exposed as olistolith in TPU flysch of central Crete. Calcite of these veins yielded a similar U-Pb age at 20 ±6 Ma. U-Pb dating of matrix calcite, on the other hand, reflect the time of sedimentation (38.4 ±5.7 Ma and 37.6 ±1.2 Ma), which is in line with the faunal content of the black limestone. Geochemical data and U-Pb calcite ages of fibres of the Nummulite test (32.3 ±3.1 Ma and 34.6 ±0.9 Ma) suggest unexpected pseudomorphic fibre replacement during late Priabonian/early Rupelian diagenesis. Additional calcite veins, which developed at ca. 10–11 and 7 – 9 Ma (U-Pb on calcite), are attributed to top-to-the S thrusting and subsequent extension, respectively. The resulting anticlockwise rotation of the shortening direction within the TPU from WNW-ESE at ca. 20 Ma to N-S at ca. 10 Ma has significant implications for the geodynamic evolution of the External Hellenides.

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Ypresian–Lutetian platform evolution in the Indus Basin, Southwestern Pakistan: An interplay between local and regional tectonic changes

Rahman,

Hanif,

Jiang

et al. 2024

Sedimentary Geology

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A NEW PRIABONIANHETEROSTEGINAFROM THE EASTERN TETHYS (SULAIMAN FOLD BELT, WEST PAKISTAN): IMPLICATIONS FOR THE DEVELOPMENT OF EASTERN TETHYAN HETEROSTEGINES AND THEIR PALEOBIOGEOGRAPHY

Cited by 8 publications

References 25 publications

Reticulate Nummulites (N. fabianii Linage) and Age of the Pellatispira-Beds of the Drazinda Formation, Sulaiman Range, Pakistan

Reticulate Nummulites (N. fabianii Linage) and Age of the Pellatispira-Beds of the Drazinda Formation, Sulaiman Range, Pakistan

Cenozoic evolution of the Tripolitza carbonate platform in the Tethyan realm: new age constraints on deposition, diagenesis, metamorphism and nappe emplacement based on U-Pb and Rb-Sr dating (External Hellenides, Crete)

Ypresian–Lutetian platform evolution in the Indus Basin, Southwestern Pakistan: An interplay between local and regional tectonic changes

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