Stratigraphy and age revision of the Pirispiki Formation, Kurdistan Region, Northern Iraq

Al-Juboury, Ali I.; Morton, Andrew; Shingaly, Waleed S.; Howard, James P.; Thusu, Bindra; Vincent, Stephen J.

doi:10.1007/s12517-020-05591-5

Cited by 5 publications

(5 citation statements)

References 10 publications

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“…The pre-Zagros passive margin strata (Fig. 7) from the northern part of the study area have detrital zircon U-Pb age distributions dominated by the early Neoproterozoic, Pan-African, Cadomian (peri-Gondwana), and other Gondwanarelated sources (Stern and Johnson, 2010;Alirezaei and Hassanzadeh, 2012;Stern et al, 2014;Avigad et al, 2016Avigad et al, , 2017Golan et al, 2018;Koshnaw et al, 2017;Al-Juboury et al, 2020;Omer et al, 2021). These age components are also found in the detrital zircon populations of the Lower Cretaceous formations in southern Iraq (Wells et al, 2017).…”

Section: Detrital Zircon (U-th) / He Thermochronology and (U-th) / He Double-dating Resultsmentioning

confidence: 83%

“…The Khabour Formation consists of thin-bedded, fine-grained sandstones, quartzites, and shales that were deposited in a shallow to deep marine environment (van Bellen et al, 1959;Al-Bassam, 2010). The Pirispiki Formation includes sandstones, siltstones, and red mudstone beds as well as conglomerates, which have been interpreted as records of a partially marine to a fluvial environment but mostly nonmarine (van Bellen et al, 1959;Al-Hadide et al, 2002;Al-Hadidy, 2007;Al-Juboury et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

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Detrital zircon provenance record of the Zagros mountain building from the Neotethys obduction to the Arabia–Eurasia collision, NW Zagros fold–thrust belt, Kurdistan region of Iraq

2021

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Abstract. Recognition of a new angular unconformity and the synthesis of new detrital zircon U–Pb and (U–Th) / He provenance records, including zircon (U–Th) / He double dating, from the NW Zagros region elucidate the basin dynamics of the foreland wedge-top and intermontane units, as well as the tectonic processes in the source terranes in response to the different geodynamic phases. In this contribution, we present field observations and detrital zircon provenance data from hinterland basins to reconstruct the basin dynamics and the underlying tectonic controls in the NW Zagros area in the Kurdistan region of Iraq. Results reveal that the deposition of the suture zone units of the Red Beds Series (RBS; Suwais Group, Govanda Formation, Merga Group) occurred in an intermontane basin on top of folded Upper Cretaceous units and that the RBS deposits rest with an angular unconformity on the underlying older strata. The RBS provenance data point to the Paleogene Walash–Naopurdan–Kamyaran (WNK) complex as a source area and imply a substantial decrease in magmatism by ∼ 36 Ma, as reflected by the youngest age peaks. New detrital zircon provenance data from the hinterland wedge-top units of the proto-Zagros foreland basin (the Tanjero, Kolosh, and Gercus formations) exhibit exclusive derivation from the Upper Cretaceous Neotethys ophiolitic terranes, which differs from the provenance of the older Lower Cretaceous and Paleozoic units that are dominated by the Paleozoic and Neoproterozoic age spectra. These shifts in provenance between different tectonostratigraphic units argue for a sediment source reversal from the west to the east in response to ophiolite obduction, arrival of the WNK complex, and commencement of the Arabia–Eurasia continental collision during the latest Eocene (< 36 Ma). According to the provenance data, the incipient collision was followed by the deposition of the RBS in the hinterland of the proto-Zagros fold–thrust belt as well as the connection of drainages with the collision-related Neogene foreland basin.

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Section: Detrital Zircon (U-th) / He Thermochronology and (U-th) / He Double-dating Resultsmentioning

confidence: 83%

Section: Introductionmentioning

confidence: 99%

Detrital zircon provenance record of the Zagros mountain building from the Neotethys obduction to the Arabia–Eurasia collision, NW Zagros fold–thrust belt, Kurdistan region of Iraq

2021

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“…This age peak points at the Neotethys oceanic crust and island arc ophiolitic terranes as the principal source during the Maastrichtian and the Paleogene times in the NW of the proto-Zagros foreland basin. The 245 older pre-Zagros passive margin strata (Paleozoic and Lower Cretaceous) form the northern part of the study area (Al-Juboury et al, 2020;Koshnaw et al, 2020a), unlike the proto-Zagros formations, have detrital zircon U-Pb age distributions dominated by older sources such as Early Neoproterozoic, Pan-African, Cadomian (peri-Gondwana), and other Gondwanarelated sources (Fig. 7).…”

Section: Provenance Of the Nw Zagros Wedge-top Depositsmentioning

confidence: 99%

“…The Khabour Formation consists of thin-bedded, fine-grained sandstones, quartzites, and shales that were deposited in a shallow to deep marine environment (van Bellen et al, 1959;Al-Bassam, 2010). The Pirispiki Formation includes sandstones, siltstones, and red mudstone beds, as well as conglomerates, which have been interpreted as records of a partially marine to a fluvial environment, but mostly non-marine 90 (van Bellen et al, 1959;Al-Hadide et al, 2002;Al-Hadidy, 2007;Al-Juboury et al, 2020).…”

mentioning

confidence: 99%

Detrital zircon provenance record of the Zagros mountain building from the Neotethys obduction to the Arabia-Eurasia collision, NW Zagros fold-thrust belt, Kurdistan region of Iraq

Koshnaw¹,

Schlunegger²,

Stöckli³

2021

Preprint

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Abstract. Recognition of new angular unconformity and synthesizing of new detrital zircon U-Pb and (U-Th)/He provenance records, including zircon (U-Th)/(He-Pb) double dating, from the NW Zagros elucidate the basin dynamics of the foreland wedge-top and intermontane units, as well as the tectonic processes in the source terranes in response to different geodynamic phases. In this contribution, we present field observations and detrital zircon provenance data from hinterland basins to reconstruct the basin dynamics and the underlying tectonic controls in the NW Zagros in the Kurdistan region of Iraq. Results reveal that the deposition of the suture zone units of the Red Beds Series (RBS; Suwais Group, Govanda Formation, Merga Group) occurred in an intermontane basin on top of folded Upper Cretaceous units with an angular unconformity. The RBS provenance data point at the Paleogene Walash-Naopurdan-Kamyaran (WNK) arc-related complex as a source area and show substantial decrease of magmatism by ~ 36 Ma, as reflected by the youngest ages peaks. New detrital zircon provenance data from the hinterland wedge-top units of the proto-Zagros foreland basin (the Tanjero, Kolosh, and Gercus Formations) exhibit exclusive derivation from the Upper Cretaceous Neotethys ophiolitic terranes, different from the provenance of the older Lower Cretaceous and Paleozoic units that are dominated by the Paleozoic and Neoproterozoic age spectra. These shifts in provenance between different tectonostratigraphic units argue for sediment route reversal from E to W in response to ophiolite obduction, arrival of the WNK complex and commencement of the continental collision during the late Eocene, followed by deposition of the RBS in the hinterland of the proto-Zagros fold-thrust belt, and paleodrainage connection with the post-collisional Neogene foreland basin.

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“…Numerous studies proved that detrital zircon U-Pb geochronology is a powerful tool to investigate sediment provenance and their transport pathway (e.g. Gärtner et al 2017;Hoskin and Ireland 2000;Al-Juboury et al 2020). Besides, a few studies also documented the importance of the combination of the zircon U-Pb age and sediment geochemistry to infer provenance and to locate source terranes (Turzewski et al 2020;Zeng et al 2020).…”

Section: Introductionmentioning

confidence: 99%

Provenance of sediments from Barra del Tordo and Tesoro beaches, Tamaulipas State, northwestern Gulf of Mexico

Ramos-Vázquez

Armstrong‐Altrin

2021

J. Palaeogeogr.

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The mineralogy, bulk sediment geochemical composition, and U–Pb ages of detrital zircons retrieved from the Barra del Tordo (Tordo) and Tesoro beach sediments in the northwestern Gulf of Mexico were analyzed to determine their provenance. The beach sediments are mainly composed of quartz, ilmenite, magnetite, titanite, zircon, and anorthite. The weathering proxies such as the Chemical Index of Alteration (CIA), Chemical Index of Weathering (CIW), and Plagioclase Index of Alteration (PIA), reveal a moderate-to-high intensity of weathering in the source area. The chondrite-normalized rare earth element (REE) patterns are similar to felsic igneous rocks, with large negative europium anomaly (Eu/Eu* = ~ 0.47–0.80 and ~ 0.57–0.67 in the Tordo and Tesoro beach sediments, respectively).Three major zircon U–Pb age groups are identified in the Tordo and Tesoro beach sediments, i.e., Proterozoic (~ 2039–595 Ma), Mesozoic (~ 244–70.3 Ma), and Cenozoic (~ 65.9–1.2 Ma). The differences of the zircon age spectrum between the Tordo and Tesoro beach sediments are not significant. The comparison of zircon U–Pb ages in this study with ages of potential source terranes suggests that the Mesozoic and Cenozoic zircons of the studied Tordo and Tesoro beach sediments were derived from the Eastern Alkaline Province (EAP) and Mesa Central Province (MCP). Similarly, the likely sources for the Proterozoic zircons were the Sierra Madre Oriental (SMOr) and Oaxaquia in the northwestern Gulf of Mexico. The results of this study further indicate that the sediments delivered to the beaches by rivers and redistributed by longshore currents were crucial in determining the sediment provenance.

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Stratigraphy and age revision of the Pirispiki Formation, Kurdistan Region, Northern Iraq

Cited by 5 publications

References 10 publications

Detrital zircon provenance record of the Zagros mountain building from the Neotethys obduction to the Arabia–Eurasia collision, NW Zagros fold–thrust belt, Kurdistan region of Iraq

Detrital zircon provenance record of the Zagros mountain building from the Neotethys obduction to the Arabia–Eurasia collision, NW Zagros fold–thrust belt, Kurdistan region of Iraq

Detrital zircon provenance record of the Zagros mountain building from the Neotethys obduction to the Arabia-Eurasia collision, NW Zagros fold-thrust belt, Kurdistan region of Iraq

Provenance of sediments from Barra del Tordo and Tesoro beaches, Tamaulipas State, northwestern Gulf of Mexico

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