Biostratigraphy of the Cretaceous/Tertiary boundary in the Sirwan Valley (Sulaimani Region, Kurdistan, NE Iraq)

Sharbazheri, Khalid M.; Ghafor, Imad M.; Muhammed, Qahtan Ahmad

doi:10.2478/v10096-009-0028-x

Cited by 27 publications

(34 citation statements)

References 27 publications

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“…The Maastrichtian-Danian boundary at the El Kef section in Tunisia (Arenillas et al, 2004;Molina et al, 2006Molina et al, , 2009, the tropical and subtropical realm (Berggren and Pearson, 2005;Wade et al, 2011), Gubbio section in Italy (Coccioni and Premoli Silva, 2015;Coccioni et al, 2016), Danial section in the Izeh zone Beiranvand et al, 2014b) and Kabirkuh section in the Lurestan salient (Darvishzad et al, 2007) are conformable, but in Lali (Beiranvand et al, 2014b) and our study area, this boundary is unconformable. In Jordan (Farouk et al, 2014) and most places in Iraq (Sharbazheri et al, 2009), a hiatus occurred at this boundary, while it is conformable in the Sirwan Valley, northeastern Iraq (Sharbazheri et al, 2009) (Fig. 14).…”

Section: Comparison Of Proposed Biozonation With Other Localitiesmentioning

confidence: 90%

The Maastrichtian‐Danian in the SW Zagros Fold‐Thrust Belt (S. Iran): An Integration of Planktonic Foraminiferal Biostratigraphy and Gamma‐Ray Spectrometry

Moghaddasi

Vaziri‐Moghaddam

Seyrafian

2020

Acta Geologica Sinica (Eng)

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In this study, the Maastrichtian-Danian boundary was measured and sampled in two stratigraphic sections, the north and south flanks of the Dehnow anticline in Coastal Fars, Southern Iran. This boundary was also investigated in the drilled exploratory well-1 in the same region. The lithology of the Maastrichtian-Danian deposits consists of glauconitic, phosphatic argillaceous limestones and marlstones. 30 genera and 77 species of planktonic foraminifera have been determined. The recognized biozones are the Gansserina gansseri Interval Zone, and the Contusotruncana contusa Interval Zone, which indicates latest Campanian to middle Maastrichtian age for the upper part of the Gurpi Formation. In addition, the Eoglobigerina edita (P1) Partial Range Zone, Praemurica uncinata (P2) Lowest Occurrence Zone, Morozovella angulata (P3) Lowest Occurrence Zone and Globanomalina psudomenardii (P4) Taxon Range Zone represent a Danian to Thanetian age for the lower part of the Pabdeh Formation. From the absence of the Abathomphalus mayaroensis Interval Zone, Pseudoguembelina hariaensis Interval Zone, Pseudotextularia elegans Interval Zone, Plummerita hantkeninoides Interval Zone, Guembelitria cretacea (P0) Partial Range Zone and Parvularugoglobigerina eugubina (Pα) Total Range Zone, it can be deduced that there is a paraconformity across the Maastrichtian-Danian boundary in the studied area, this hiatus encompassing the late Maastrichtian and the earliest Danian. Danian deposits from the study area contain reworked glauconitized macrofossils, planktonic and benthic foraminifera of the Cretaceous. The obtained surface gamma-ray spectrometry logs resemble the exploratory well-1 gamma-ray wireline log.

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Section: Comparison Of Proposed Biozonation With Other Localitiesmentioning

confidence: 90%

The Maastrichtian‐Danian in the SW Zagros Fold‐Thrust Belt (S. Iran): An Integration of Planktonic Foraminiferal Biostratigraphy and Gamma‐Ray Spectrometry

Moghaddasi

Vaziri‐Moghaddam

Seyrafian

2020

Acta Geologica Sinica (Eng)

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“…Coccioni and Premoli Silva (2015) stated that the zonal marker is very rare and, sporadically, presented through their revision and identification of the CF1 Zone at the classical Tethyan Gubbio section (Italy). Sharbazheri (2008) and Sharbazheri et al (2011) recorded the CF1 Zone in their study of the Cretaceous/Paleogene boundary in Sulaimani area of Kurdistan Region. Salih et al (2013) and Al-Mutwali and Ibrahim (2019) recorded the same zone from Northern and Northeastern Iraq.…”

Section: • Pseudoguembelina Palpebra (Cf2) Interval Zone (Late Late Maastrichtian)mentioning

confidence: 96%

“…Many studies of the uppermost Cretaceous deposits in Iraq and Kurdistan Region suggested that the Cretaceous ends with probably abrupt, erosional, paraunconformity or hiatus among them (Al-Safawee, 1982;Al-Mutwali, 1983;Al-Shaibani and Al-Qayim, 1986;Kassab, 1986;Ghafor, 1988;Al-Qayim and Al-Shaibani, 1995;Al-Omari et al, 1994;Awadh et al, 2008;Al-Hadiedi, 2010;Hammoudi, 2011;Al-Mutwali and Al-Doori, 2012;Al-Wazan, 2013;Al-Mutwali and Ibrahim, 2019;Al-Dulaimi and Abdallah, 2019). In contrast, other foraminiferal biostratigraphic studies have supported the occurrence of complete uppermost Maastrichtian deposits (Sharbazheri et al, 2009 and2011;Salih et al, 2013;Mousa et al, 2020;Al Nuaimy et al, 2020). The current high resolution biostratigraphic study aims to prove the occurrence of complete uppermost Maastrichtian deposits throughout the planktic foraminiferal assemblages and its biozonations for the upper part of the Shiranish Formation, Duhok area, Kurdistan Region, North of Iraq.…”

Section: Introductionmentioning

confidence: 94%

Foraminiferal Biostratigraphy of the Uppermost Cretaceous Period, Duhok Area, Kurdistan Region, North of Iraq

Bamerni

Al-Qayim

Hammudi

2021

IGJ

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A relatively complete Late Maastrichtian succession of the upper part of the Shiranish Formation (Upper Cretaceous) in the Duhok area is investigated for the planktic foraminiferal assemblages. This studied interval consists mainly of bluish shale, marl, and thin beds of hard marly limestone all with grey-blue color. The upper contact of the Shiranish Formation is conformable with the overlies Danian Aaliji Formation. Based on the recorded planktic foraminifera and their ranges, the studied succession is subdivided into three main biozones of the latest Maastrichtian age, these zones are Pseudoguembelina hariaensis (CF3) Interval Zone, Pseudoguembelina palpebra (CF2) Interval Zone, and Plummerita hantkeninoides (CF1) Total Range Zone. These zones show continuous and complete Upper Cretaceous sediments, which are preserved in the Bade section of the Duhok area

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“…Some confusion has arisen on the status of the Kolosh Formation, the only siliciclastic unit of this sequence. Seilacher (1963, in Jassim andGoff 2006) and Jassim and Goff (2006) considered the formation as molasse sediments, whereas Al-Qayim et al (1988), Al-Qayim (1993, 1995a, and Al-Sakry (2006) and part of Sulaimani areas (Sharbazheri et al 2009(Sharbazheri et al , 2011 and with unconformable contacts in other regions (Kassab 1975). On the other hand, the upper contact with the Middle-Upper Eocene rock units is unconformable (Bellen et al 1959).…”

Section: Introductionmentioning

confidence: 95%

Depositional setting and basin development of the Paleocene—Lower Eocene Sinjar and Khurmala formations, Northern Iraq

2015

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Petrographic study of the Sinjar and Khurmala Formations at the Zagros and Taurus Folded Zones, in northern Iraq led to the recognition of 11 carbonate microfacies that can be grouped into seven facies associations. These facies associations deposited within outer shelf, fore-reef, reef, back-reef, lagoon, shoals/bars and channels, and tempestite subenvironments of a composite isolated carbonate platform. The digenetic imprints on the recognized microfacies are prominent and dominated by micritization, dissolution, cementation, neomorphism, dolomitization, compaction, stylolitization, and precipitation of some authigenic minerals such as pyrite, glauconite, and gypsum. Isopach and depositional facies maps of the Sinjar-Khurmala successions show three depocenters in two subbasins in the study area, two of them are elongated and coincide with the Zagroside and the Taurides trends, whereas the third accords with the trend of the Sinjar graben. The reconstruction of the history of the Sinjar and Khurmala carbonates revealed four stages of basin development within two subbasins. The first stage represents the initial deposition of the Sinjar and Khurmala Formations that was preceded by the deposition of the deep marine part of the underlying Kolosh Formation. This depositional phase is characterized by submarine fans and basinal sediments. Both subbasins were partially separated by a ridge or a series of paleohighs, which had been inherited from relieves of the Cretaceous paleosurface. During the second depositional stage, the Sinjar basin is developed by growth of another reef build-up to the southeast with a general direction from southwest near Kirkuk area to the northeast near Sulamani area. During the third depositional stage, the basin was developed through the growth of isolated carbonate platform extending from the Kirkuk to the Duhok. Such platform was drowned during the transgression that covered the northern part of the Kolosh basin and southwestern part of the Aaliji basin. The final depositional stage was represented by a still stand period, when the sea level was stilled, and led to the upgrading growth during the early Highstand system tract of the carbonate shelf . As a result, during this stage, the reef facies were prograded seaward and replaced by the back-reef facies to indicate the end of Highstand during the late regression stage.

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Biostratigraphy of the Cretaceous/Tertiary boundary in the Sirwan Valley (Sulaimani Region, Kurdistan, NE Iraq)

Cited by 27 publications

References 27 publications

The Maastrichtian‐Danian in the SW Zagros Fold‐Thrust Belt (S. Iran): An Integration of Planktonic Foraminiferal Biostratigraphy and Gamma‐Ray Spectrometry

The Maastrichtian‐Danian in the SW Zagros Fold‐Thrust Belt (S. Iran): An Integration of Planktonic Foraminiferal Biostratigraphy and Gamma‐Ray Spectrometry

Foraminiferal Biostratigraphy of the Uppermost Cretaceous Period, Duhok Area, Kurdistan Region, North of Iraq

Depositional setting and basin development of the Paleocene—Lower Eocene Sinjar and Khurmala formations, Northern Iraq

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