Palaeoenvironmental signature of the Late Campanian-Early Maastrichtian benthonic foraminiferal assemblages of Kurdistan, Northeast Iraq

Jaff, Rawand Bakir Noori; Lawa, Fadhil A.

doi:10.1016/j.jafrearsci.2018.11.023

Cited by 15 publications

(15 citation statements)

References 47 publications

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“…For indurated rock samples, thin section analysis was used for heterohelicid identifications. For friable rock samples, a freeze-thaw method of processing was used (Jaff et al, 2014;Jaff and Lawa, 2019). Approximately 200-300 grams of each friable sample was repeatedly frozen and thawed in a supersaturated solution of sodium sulphate decahydrate until the rock disaggregated.…”

Section: Methodsmentioning

confidence: 99%

“…The formation in its type section is about 228 m thick, and is informally subdivided into a 'lower unit' characterised by alternating marly limestone and calcareous marlstone that is rich in foraminifera, and an 'upper unit' that is dominated by blue marlstone (van Bellen et al, 2005;Aqrawi et al, 2010). According to several authors (Kennedy and Lunn 2000;Al-Banna 2010;Aqrawi et al, 2010;Jaff et al, 2014Jaff et al, , 2015Farouk et al, 2018;Jaff and Lawa, 2019) the age of the Shiranish Formation is Late Campanian to Maastrichtian, but it does not extend to the Late Maastrichtian (Kassab 1973;Jaff et al, 2014Jaff et al, , 2015Farouk et al, 2018;Jaff and Lawa, 2019). The formation in its type locality is interpreted to be an outer shelf to basinal deposit (Jassim and Goff, 2006) that unconformably overlies the Kometan Formation, and is succeeded conformably by marine clastic deposits of the Tanjero Formation in NE Iraq (Sharbazheri, 2008).…”

Section: Shiranish Formationmentioning

confidence: 99%

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Biostratigraphy and Systematic Palaeontology of Late Cretaceous Heterohelicidae Foraminifera from Kurdistan Region North-eastern Iraq

Jaff¹,

Lawa²

2020

INJES

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The biostratigraphical importance and systematic palaeontology of Early Turonian to Early Maastrichtian Heterohelicidae Planktic foraminifera from Kurdistan region, NE Iraq are described. Some 24 species from 11 genera are recorded. Species abundance and diversity increase from the Early Turonian to Early Maastrichtian, perhaps signifying cooler sea temperatures in the Arabian sector of the Tethys Ocean during the Early Maastrichtian. Despite the long biostratigraphical ranges of some species, the importance of the biserial and multiserial Planktic foraminifers in Late Cretaceous biostratigraphy is emphasized. From a biostratigraphic perspective, heterohelicids are important for the definition of the Campanian-Maastrichtian boundary in Kurdistan region, with Planoglobulina species being especially important in this respect, as they are in Iran, Turkey and North Africa.

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Section: Methodsmentioning

confidence: 99%

Section: Shiranish Formationmentioning

confidence: 99%

Biostratigraphy and Systematic Palaeontology of Late Cretaceous Heterohelicidae Foraminifera from Kurdistan Region North-eastern Iraq

Jaff¹,

Lawa²

2020

INJES

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“…This was followed during the middle Maastrichtian period by a local marine retreat that left its clear imprint in the sediments of the upper part of the formation, where the microfacies SH3 were deposited, which indicate their deposition in environments less deep than the previous ones represented by outer shelf environments (Gibson, 1989;Berggren & Miller, 1989). Jaff & Lawa (2019) recorded shallowing upwards successions of the Shiranish Formation from the foraminiferal assemblages that are interpreted as representing outer shelf to middle slope environments, between 200 m to at least 600 m water depth, with maximum water depths in the Late Campanian, followed by shallowing into the Early Maastrichtian.…”

Section: Depositional Environmentsmentioning

confidence: 98%

Stratigraphic And Microfacies Study Of Upper Campanian - Lower Maastrichtian Succession (Shiranish Formation) In Bade Village, Bekhere Anticline, Kurdistan Region, Northern Iraq

Malak¹,

Al-Badrani²

2021

BGSM

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The Upper Cretaceous Shiranish Formation outcropped close to Bade village and Bekhere anticline, Kurdistan region at northern Iraq and consists of alternating mixed tough grey limestone, marly limestone, marl beds interpreted as a middle - outer shelf – upper bathyal environments (basinal) depositional environment. Fifteen thin sections were studied under a polarized microscope to find out the petrographic component, fauna content, and for microfacies analysis. The major petrographic constituents are fossils, bioclastic grains, micrite matrix, and extraclast (quartz grains). Planktic foraminifera and nannofossils are the major particles within wackestone and packstone microfacies types. The planktonic foraminifera biozones from previous study (such as Globotruncana aegyptiaca, Gansserina gansseri, Racemiguembelina fructicosa, Plummerita hantkeninoides) and the recorded calcareous nannofossils biozones of Broinsonia parca, Reinhardtites levis, Arkhangelskiella cymbiformis, suggest a late Campanian to late Maastrichtian age.

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“…Genus Pseudogaudryinella Cushman, 1936; 45) Pseudogaudryinella iraqensis Anan, n. sp. (=Tritaxia whitei of Jaff & Lawa [33] , p. 14, pl. 2, Figures 14,15).…”

Section: Suborder Verneuilinina Mikhalevich and Kaminski 2004;mentioning

confidence: 99%

Contribution to the Paleontology, Stratigraphy and Paleogeography of Ninety-seven Southern Tethyan Agglutinated Foraminiferal Species

Anan

2022

eps

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Ninety-seven Campanian–Paleogene smaller agglutinated benthic foraminiferal species belong to thirty-five genera from ten countries in the Southern Tethys (Algeria, Egypt, Palestine, Jordan, Iraq, Qatar, UAE, Iran, Pakistan, India) have been studied. The modern taxonomical consideration of the species are used. Eighty-nine of the recorded species were previously noted in the literatures, while eight of them are believed here as new: Haplophragmoides iranica, Pseudogaudryinella iraqensis, Arenobulimina beitjebrinensis, A. jerusalemensis, Textulariella sinaensis, Dorothia iranica, Clavulinoides iranica, and Textularia salahii. Forty species of them are recorded from Egypt (about 41%), twenty seven from Pakistan (~28%), ten from UAE (~10.5%), six from Qatar (~ 6%), four from each of Algeria and Iran (~ 4 %), three from each of Jordan (~ 3%), two from each of Palestine and Iran (~2%), and only one from each of Iraq and India (~1%). Most of the Southern Tethyan recorded species are endemic to their original description, while five of them are also recorded in some Northern Tethyan countries (Spain, France, Italy, Hungary and Slovenia): Bathysiphon saidi, Haplophragmoides desertorum, Spiroplectinella esnaensis, Siphogaudryina africana and Textularia crookshanki. The Southern Tethyan assemblage indicate an open marine environment, which represents middle-outer neritic environment (100-200 m depth), and show s an affinity with Midway-Type Fauna 'MTF'' of the United States Gulf Coastal area.

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Palaeoenvironmental signature of the Late Campanian-Early Maastrichtian benthonic foraminiferal assemblages of Kurdistan, Northeast Iraq

Cited by 15 publications

References 47 publications

Biostratigraphy and Systematic Palaeontology of Late Cretaceous Heterohelicidae Foraminifera from Kurdistan Region North-eastern Iraq

Biostratigraphy and Systematic Palaeontology of Late Cretaceous Heterohelicidae Foraminifera from Kurdistan Region North-eastern Iraq

Stratigraphic And Microfacies Study Of Upper Campanian - Lower Maastrichtian Succession (Shiranish Formation) In Bade Village, Bekhere Anticline, Kurdistan Region, Northern Iraq

Contribution to the Paleontology, Stratigraphy and Paleogeography of Ninety-seven Southern Tethyan Agglutinated Foraminiferal Species

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