Petrography and geochemistry of Jurassic sandstones, Western Desert, Iraq: implications on provenance and tectonic setting

Tobia, Faraj H.; Aswad, Khalid J.

doi:10.1007/s12517-014-1392-0

Cited by 23 publications

(5 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Major element tectonic discrimination diagrams of Bhattia (1983) and Roser and Korsch (1986) are widely used in sediment provenance studies (e.g., Valloni and Maynard, 1981;Dostal and Keppie, 2009;Tobia and Aswad, 2015). However, Armstrong-Altrin and Verma (2005) indicated from Miocene to Holocene geochemical data that the success rate of Bhattia (1983) tectonic discriminant diagram is ~0-23% while that of Roser and Korsch (1986) is ~32-53%.…”

Section: Tectonic Settingmentioning

confidence: 99%

“…Major element tectonic discrimination diagrams of Bhattia (1983) and Roser and Korsch (1986) are widely used in sediment provenance studies (e.g., Valloni and Maynard, 1981;Dostal and Keppie, 2009;Tobia and Aswad, 2015 Armstrong-Altrin (2015) interpreted the two tectonic discrimination diagrams and suggested that they can be used as effective guides for discriminating the tectonic setting of paleosedimentary basins. Following this, the two new proposed tectonic discrimination diagrams have been effectively used in several studies to discriminate the tectonic environment of sediment sources using their geochemistry (e.g., Guadagnin et al, 2015;Tawfik et al, 2015;Zaid et al, 2015).…”

Section: Tectonic Settingmentioning

confidence: 99%

See 1 more Smart Citation

Geochemistry and petrography of beach sands along the western coast of Ghana: implications for provenance and tectonic settings

Abu¹,

Sunkari²

2020

Turkish J Earth Sci

View full text Add to dashboard Cite

show abstract

“…Major element tectonic discrimination diagrams of Bhattia (1983) and Roser and Korsch (1986) are widely used in sediment provenance studies (e.g., Valloni and Maynard, 1981;Dostal and Keppie, 2009;Tobia and Aswad, 2015). However, Armstrong-Altrin and Verma (2005) indicated from Miocene to Holocene geochemical data that the success rate of Bhattia (1983) tectonic discriminant diagram is ~0-23% while that of Roser and Korsch (1986) is ~32-53%.…”

Section: Tectonic Settingmentioning

confidence: 99%

“…Major element tectonic discrimination diagrams of Bhattia (1983) and Roser and Korsch (1986) are widely used in sediment provenance studies (e.g., Valloni and Maynard, 1981;Dostal and Keppie, 2009;Tobia and Aswad, 2015 Armstrong-Altrin (2015) interpreted the two tectonic discrimination diagrams and suggested that they can be used as effective guides for discriminating the tectonic setting of paleosedimentary basins. Following this, the two new proposed tectonic discrimination diagrams have been effectively used in several studies to discriminate the tectonic environment of sediment sources using their geochemistry (e.g., Guadagnin et al, 2015;Tawfik et al, 2015;Zaid et al, 2015).…”

Section: Tectonic Settingmentioning

confidence: 99%

Geochemistry and petrography of beach sands along the western coast of Ghana: implications for provenance and tectonic settings

Abu¹,

Sunkari²

2020

Turkish J Earth Sci

View full text Add to dashboard Cite

show abstract

“…The major element discrimination diagrams introduced by Bhatia () and Roser and Korsch () for clastic sediments have mostly been used to evaluate tectonic settings of sedimentary basins (Nowrouzi, Moussavi‐Harami, Mahboubi, Gharaie, & Ghaemi, ; Tobia & Aswad, ). Although many studies have identified that the results based these discrimination diagrams are inconsistent with the geology of the studied areas (Armstrong‐Altrin, ; Armstrong‐Altrin et al, ; Armstrong‐Altrin et al, ; Dostal & Keppie, ; Valloni & Maynard, ).…”

Section: Discussionmentioning

confidence: 99%

Petrography and geochemistry of upper Triassic sandstones from the Tumengela Formation in the Woruo Mountain area, North Qiangtang Basin, Tibet: Implications for provenance, source area weathering, and tectonic setting

Wang

et al. 2017

Island Arc

View full text Add to dashboard Cite

The petrography and major and trace element concentrations of the sandstones from the Tumengela Formation in the Woruo Mountain area, North Qiangtang Basin, are studied to determine their provenance, intensity of weathering and tectonic setting. The detrital compositions of the Tumengela sandstone samples are dominated by quartz (58.0-70.1 %, average 64.7 %) and lithic fragments (21.8-35.9 %, average 27.3 %), but low in feldspar content (4.9-12.9 %, average 8.0 %). The sandstones can be classified as litharenite and feldspathic litharenite according to their detrital compositions, which is consistent with the geochemical data. The detrital modal compositions reflect that these sandstones are probably derived from a recycled orogenic source. The index of chemical variability (ICV) and SiO 2 /Al 2 O 3 ratio values suggest that the compositional maturity and recycling were moderate. The weathering indices such as the chemical index of alteration (CIA), plagioclase index of alteration (PIA), chemical index of weathering (CIW), and Al 2 O 3 -(CaO* + Na 2 O)-K 2 O (A-CN-K) diagram indicate that the intensities of weathering in the source area were moderate. The Al 2 O 3 /TiO 2 , Th/Co, La/Sc, La/Co, Th/Sc, Cr/Th ratio values and the discriminant function of the Tumengela sandstones indicate that the sediments were mainly derived from felsic source rocks, while also mixed with intermediate source rocks. The comparison of rare earth element patterns and its Eu anomalies to the probable source rocks infer that the sandstones were derived from the combination of granite, rhyolite, dacite, and gneisses. The proximal central uplift belt was probably the primary provenance area as evidenced by the petrographical and geochemical features of the Tumengela sandstones. The multidimensional tectonic discrimination diagram based on major elements show a collision setting (80 %) combined with a rift setting (20 %) for the Tumengela sandstones, which is consistent with the general geology of the study areas.

show abstract

“…Here we used the method reported by McLennan (1993) to calculate CaO* (CaO – 10/(3 × P 2 O 5 )). Function 1 (F1) and Function 2 (F2) were calculated via: F1 = 0.074SiO 2 – (0.226Fe 2 O 3 ) – (0.270Al 2 O 3 ) + 4.489TiO 2 + 0.153CaO – (0.137MgO) + 0.398Na 2 O + 1.447K 2 O + 52.458P 2 O 5 – (9.655); and F2 = 0.190SiO 2 + 0.268Fe 2 O 3 + 0.313Al 2 O 3 – (0.336TiO 2 ) + 0.209CaO + 4.107MgO + 3.866Na 2 O – (1.293K 2 O) – (6.570P 2 O 5 ) – 18.926 (Tobia & Aswad, 2014).…”

Section: Methodsmentioning

confidence: 99%

Detrital zircon geochronology and geochemistry of Jurassic sandstones in the Xiongcun district, southern Lhasa subterrane, Tibet, China: implications for provenance and tectonic setting

et al. 2018

View full text Add to dashboard Cite

Jurassic sandstones in the Xiongcun porphyry copper–gold district, southern Lhasa subterrane, Tibet, China were analysed for petrography, major oxides and trace elements, as well as detrital zircon U–Pb and Hf isotopes, to infer their depositional age, provenance, intensity of source-rock palaeo-weathering and depositional tectonic setting. This new information provides important evidence to constrain the tectonic evolution of the southern Lhasa subterrane during the Late Triassic – Jurassic period. The sandstones are exposed in the lower and upper sections of the Xiongcun Formation. Their average modal abundance (Q21F11L68) classifies them as lithic arenite, which is also supported by geochemical studies. The high chemical index of alteration values (77.19–85.36, mean 79.96) and chemical index of weathering values (86.19–95.59, mean 89.98) of the sandstones imply moderate to intensive weathering of the source rock. Discrimination diagrams based on modal abundance, geochemistry and certain elemental ratios indicate that felsic and intermediate igneous rocks constitute the source rocks, probably with a magmatic arc provenance. The detrital zircon ages (161–243 Ma) and εHf(t) values (+10.5 to +16.2) further constrain the sandstone provenance as subduction-related Triassic–Jurassic felsic and intermediate igneous rocks from the southern Lhasa subterrane. A tectonic discrimination method based on geochemical data of the sandstones, as well as detrital zircon ages from sandstones, reveals that the sandstones were most likely deposited in an oceanic island-arc setting. These results support the hypothesis that the tectonic background of the southern Lhasa subterrane was an oceanic island-arc setting, rather than a continental island-arc setting, during the Late Triassic – Jurassic period.

show abstract

Petrography and geochemistry of Jurassic sandstones, Western Desert, Iraq: implications on provenance and tectonic setting

Cited by 23 publications

References 26 publications

Geochemistry and petrography of beach sands along the western coast of Ghana: implications for provenance and tectonic settings

Geochemistry and petrography of beach sands along the western coast of Ghana: implications for provenance and tectonic settings

Petrography and geochemistry of upper Triassic sandstones from the Tumengela Formation in the Woruo Mountain area, North Qiangtang Basin, Tibet: Implications for provenance, source area weathering, and tectonic setting

Detrital zircon geochronology and geochemistry of Jurassic sandstones in the Xiongcun district, southern Lhasa subterrane, Tibet, China: implications for provenance and tectonic setting

Contact Info

Product

Resources

About