Provenance of the southern Junggar Basin in the Jurassic: Evidence from detrital zircon geochronology and depositional environments

Fang, Yanan; Wu, Chaodong; Guo, Zhaojie; Hou, Kejun; Dong, Lin; Wang, Luxin; Li, Linlin

doi:10.1016/j.sedgeo.2014.10.014

Cited by 66 publications

(76 citation statements)

References 64 publications

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“…Middle Jurassic (ca. 160 Ma) volcanic rocks were also observed in the western part of the Bogda mountains (Figure ; Fang et al, ; Ji et al, ; Yang et al, ). The southern branch of the NTS, the Jueluotage mountains, mainly consists of volcanic rocks ranging from Devonian to Carboniferous in age (Mao, Fang, Wang, Wang, & Wang, ; Song, Li, Li, Wang, & Wang, ; Xiao et al, ; Zhang et al, ; Zhou et al, ).…”

Section: Geological Settingmentioning

confidence: 93%

“…The first, most significant, feature in the zircon U‐Pb age probability plots and histograms for the Middle Jurassic to Early Cretaceous strata in the Turpan‐Hami basin is that the Middle Jurassic age peak (159–172 Ma) only occurs in the Middle Jurassic (SS003) sample from the Shanshan area in the eastern part of the Turpan‐Hami basin. Previous studies indicated that no direct field evidence supported significant Mesozoic magmatism around the Turpan‐Hami basin (Fang et al, ; Guo, Han, Zhang, & Chen, ; Han et al, ; Han, He, Wang, & Guo, ). However, a tuff layer with a K‐Ar age of 164.6 ± 1.4 Ma was found in the southern Junggar basin to the west of Urumqi (Wang & Gao, ).…”

Section: Interpretation Of Provenance Changesmentioning

confidence: 97%

“…Abundant Jurassic zircons with a peak age of ca. 168 Ma were found in Middle Jurassic strata nearby (Fang et al, ; Yang et al, ). In addition, Ji et al () reported a Middle Jurassic age peak in the same Jurassic sandstone on the north‐western flank of the Bogda mountain.…”

Section: Interpretation Of Provenance Changesmentioning

confidence: 99%

“…Subsequent to the Late Jurassic, zircons with Permian to Carboniferous ages started dominating the sediments being deposited into the Turpan‐Hami basin. However, Jurassic zircons were still observed in the Late Jurassic sediments of the southern Junggar basin (Fang et al, ; Figure ), which probably suggests that the channel along which the erosion products of the Jurassic volcanic rocks were transported to the Turpan‐Hami basin was subsequently blocked. This could have resulted from the uplift of the western Bogda mountains according to a thermochronology study conducted in this area, illustrating that these rocks experienced rapid cooling during the late Jurassic to early Cretaceous (Tang et al, ).…”

Section: Interpretation Of Provenance Changesmentioning

confidence: 99%

“…How the current tremendous relief formed from the planation surface in the Jurassic is widely debated in the geological study of the Tian Shan region. Some studies have suggested that the topography during the Jurassic was not totally flat everywhere, with gentle relief at some places in the northern and central Tian Shan (Fang et al, ; Ji et al, ; Tang et al, ; Yang et al, ), whereas Jolivet et al () proposed that this gentle relief was not established until the Oligocene.…”

Section: Introductionmentioning

confidence: 99%

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Detrital zircon geochronology analysis of the Late Mesozoic deposition in the Turpan‐Hami basin: Implications for the uplift history of the Eastern Tian Shan, north‐western China

et al. 2019

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Analysing the provenance changes of synorogenic sediments in the Turpan‐Hami basin by detrital zircon geochronology is an efficient tool to examine the uplift and erosion history of the easternmost Tian Shan. We present detrital zircon U‐Pb analysis from nine samples that were collected within marginal lacustrine Middle‐Late Jurassic and aeolian‐fluvial Early Cretaceous strata in the basin. Middle‐Early Jurassic (159–172 Ma) zircons deriving from the southern Junggar dominated the Middle Jurassic sample from the western Turpan‐Hami basin, whereas Permian‐Carboniferous (270–330 Ma) zircons from the Bogda mountains were dominant in the Late Jurassic to Early Cretaceous samples. Devonian‐Silurian (400–420 Ma) and Triassic (235–259 Ma) zircons from the Jueluotage and Harlik mountains constituted the subordinate age groups in the Late Jurassic and Early Cretaceous samples from the eastern basin respectively. These provenance transitions provide evidence for uplift of the Bogda mountains in the Late Jurassic and the Harlik mountains since the Early Cretaceous.

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Section: Geological Settingmentioning

confidence: 93%

Section: Interpretation Of Provenance Changesmentioning

confidence: 97%

Section: Interpretation Of Provenance Changesmentioning

confidence: 99%

Section: Interpretation Of Provenance Changesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Detrital zircon geochronology analysis of the Late Mesozoic deposition in the Turpan‐Hami basin: Implications for the uplift history of the Eastern Tian Shan, north‐western China

et al. 2019

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Braided–meandering system evolution in the rock record: Implications for climate control on the Middle–Upper Jurassic in the southern Junggar Basin, north‐west China

Zhang

Shan

et al. 2018

Geological Journal

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This paper presents the current body of knowledge regarding the evolution of a braided–meandering system in the southern Junggar Basin, north‐west China, based on the preserved architecture evidences. The response to climate change was also discussed. Herein, 10 types of lithofacies are summarized, including information of their primary sedimentary structures, characteristic lithology, and geometry. This study focuses on recognizing the architectural elements within the channels (migrating channel: CHm, switching channel: CHs, transiting channel: CHt, and filling channel: CHf), the bar units (downstream accretion: DA, lateral accretion: LA, unit bar: UB, and compound bar: CB), and fine‐grained clastic deposits (floodplain fines: FF and overbank fines: OF). Three representative sections of outcrops were selected, and detailed observation and analysis of these sections revealed 3 stages can be divided: the braided stage, in which the deposits show an evidence of CHm, DA elements which are the mainly architectural elements, multichannel with aggradational filling; The transformation between braided–meandering stage, during which the fluvial system consists of CHt and CHm elements with lateral accretion; and meandering stage which is characterized by dominance of CHm, LA elements, and the channels become isolated and meandering. Finally, this paper concludes with an interpretation of climate events as manifested by the fluvial archives of the colours of sedimentary rocks, special mineral, palaeontology, geochemistry spanning the Middle–Upper Jurassic (between 166.1 and 152.1 Ma).

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Deposition conditions of the Jurassic lacustrine source rocks in the East Fukang Sag, Junggar Basin, NW China: Evidence from major and trace elements

2019

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The Fukang Sag hosts prolific Jurassic lacustrine source rocks, which include the Badaowan (J1b), Sangonghe (J1s), and Xishanyao (J2x) formations in the Junggar Basin. Depositional conditions were reconstructed based on various major and trace element proxies for the East Fukang Sag during the Jurassic. The palaeowater depth in the sag was shallow and did not display a great change during the deposition of the J1b, J1s, and J2x formations, as indicated by lithological composition and the widespread ripple cross‐beddings. The oxic to dysoxic and fresh‐water conditions were postulated to prevail in the sag during the deposition of these source rocks, as revealed by concentrations of salinity‐ and redox‐sensitive trace elements [i.e., V/Cr, Ni/Co, (Cu+Mo)/Zn, Sr/Ba ratios, and Sr, Mn, Ga contents] derived from the source rocks. The seasonal salinity stratification superposed on preexisting thermal stratification led to the appearance of the chemocline in the J1b Formation. The palaeoclimate regime was humid and warm during the depositions of the J1b and the upper J1s formations, and warmer and drier during the deposition of the lower J1s Formation, but the palaeoclimate gradually became semi‐arid and semi‐cold during the deposition of the upper J2x Formation, as implied by various proxies (i.e., Sr/Cu ratio, C‐value, and CIA value). Despite the fact that the oxic to dysoxic conditions were not conducive for organic matter (OM) preservation, the significantly moderate‐high palaeoproductivity (suggested by, i.e., Ba content and Ba/Al ratio), which was promoted by a suitable supply of nutrient from terrestrial inputs in the shallow water was the controlling factorfor the OM accumulation on the margin of the sag, but the low OM concentration was controlled by the palaeoredox conditions in the central area, which was far from the OM input source [suggested by the relationship between total organic carbon content and stable carbon isotope composition of OM (δ13Corg)]. The analyses based on Rock‐Eval pyrolysis, maceral composition, C/N ratio of isolated kerogen, and δ13Corg value showing the OM was derived from terrestrial higher plants with C3 plants (type III kerogen) are consistent with the palaeoenvironmental analysis.

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Provenance of the southern Junggar Basin in the Jurassic: Evidence from detrital zircon geochronology and depositional environments

Cited by 66 publications

References 64 publications

Detrital zircon geochronology analysis of the Late Mesozoic deposition in the Turpan‐Hami basin: Implications for the uplift history of the Eastern Tian Shan, north‐western China

Detrital zircon geochronology analysis of the Late Mesozoic deposition in the Turpan‐Hami basin: Implications for the uplift history of the Eastern Tian Shan, north‐western China

Braided–meandering system evolution in the rock record: Implications for climate control on the Middle–Upper Jurassic in the southern Junggar Basin, north‐west China

Deposition conditions of the Jurassic lacustrine source rocks in the East Fukang Sag, Junggar Basin, NW China: Evidence from major and trace elements

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