The study of Yanshanian unconformity tectonic events in Northern Junggar Basin

Li, Zhenhua; Chen, Zhanjun; Cao, Feng; Zhang, Suya; Huang, Nana

doi:10.1088/1755-1315/349/1/012045

Cited by 5 publications

(7 citation statements)

References 3 publications

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“…G. Song, Yuan, Zhao, and Haitao (2013) believed that the initial uplift time was 30–20 Ma, while L. Li et al (2008) and W Li et al (2010) concluded that strong tectonic movement occurred since the Eocene (ca. 25 Ma) according to the long‐range effect of the India–Tibet plate collision during the Himalayan movement (Z. H. Li et al, 2014; W. J. Zhao et al, 2013). All of these thermochronological ages are in good agreement with the U–Pb isotopic isochron ages of 27–21.3 Ma (Figure 8), which indicates that the ore‐bearing bed in the margin of the eastern Junggar Basin may have been re‐exposed at the surface at this time (G. Song et al, 2013), followed by the occurrence of epigenetic oxidation mineralization.…”

Section: Discussionmentioning

confidence: 99%

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Litho‐mineralogy, geochemistry, and chronology for the genesis of the Kamust sandstone‐hosted uranium deposit, Junggar Basin, NW China

et al. 2021

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The Kamust sandstone‐hosted uranium deposit was recently discovered within the Middle Jurassic Toutunhe Formation of the eastern Junggar Basin. In this study, polarizing microscope and scanning electron microscope observation, electron microprobe analysis, and laser ablation inductively coupled plasma mass spectrometry measurement were carried out to define the petrology, mineralogy, and geochemistry of these sandstone‐hosted uranium ores. In addition, sulphur isotope signatures for the associated ore‐stage pyrites and the ore‐forming age were determined. The results show that the mineralized sandstones, which exhibit excellent reducibility with abundant organic matter and pyrites, are characterized by the secondary accumulation of uranium and are slightly enriched in rare earth elements (REE) and light REE (LREE). The uranium deposits are mainly composed of a large amount of uraninite, followed by some coffinites and uranium‐bearing titanium minerals and very few sorptive uranium‐bearing materials. Uranium minerals primarily exist within the interior and edge of clastic particles in colloidal, dispersed, and vein form, and some are closely interweaved with the colloidal and framboidal pyrites and carbonaceous detritus. Both uraninite and coffinite are strongly enriched in REE and LREE, as determined by in situ trace element measurements. Moreover, the δ34S values of the associated ore‐stage pyrites mostly range from −41.66 to −19.33‰, indicating biological origin, and light 32S demonstrates the relatively low‐temperature and open‐system mineralization processes related to the microbial anaerobic action on the organic matter. One of the δ34S values (6.88‰) is possibly caused by Rayleigh isotope fractionation due to the utilization of residual heavy 34S in the relatively later closed‐like mineralization system. The ore‐reforming ages of 27 ± 3.2 Ma, 22.4 ± 3.9 Ma, and 21.3 ± 2.3 Ma were obtained by U–Pb isotopic dating combined with U–Ra balance correction, corresponding to the rapid uplift event caused by the remote effect of the collision between the Indian and Eurasian plates at the end of the Palaeogene. In conjunction with the tectonic–sedimentary evolution of the study region, a four‐stage ore‐forming model for the Middle Jurassic Toutunhe Formation is preliminarily constructed: ① Development of ore‐bearing strata, ② initiation of the mineralization stage from the Late Jurassic to the Early Cretaceous, ③ deep burial by lacustrine and flood mudstone from the Cretaceous to the Palaeogene, and ④ the superimposed ore‐forming stage during the Neogene. These research results provide significant benefits for further uranium prospecting and in situ leach process mining in this basin.

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Section: Discussionmentioning

confidence: 99%

“…andW Li et al (2010) concluded that strong tectonic movement occurred since the Eocene (ca. 25 Ma) according to the long-range effect of the India-Tibet plate collision during the Himalayan movement (Z. H Li et al, 2014;…”

mentioning

confidence: 99%

Litho‐mineralogy, geochemistry, and chronology for the genesis of the Kamust sandstone‐hosted uranium deposit, Junggar Basin, NW China

et al. 2021

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“…The orogenic belt in the eastern Junggar Basin underwent tectonic uplift in the Cretaceous, with uplift age gradually becoming younger from south to north in space. Based on the analysis of AFT ages [34,56,57,[63][64][65][66][67][68][69], most scholars propose that the uplift in this period occurred from Late Jurassic to the Early Cretaceous. The uplift occurred not only in the eastern Junggar Basin but also in different tectonic units in Xinjiang, China, with varied uplift ages and rates, indicating a significant regional tectonic event and wide influence.…”

Section: Rapid Uplift In the Cretaceousmentioning

confidence: 99%

“…Moreover, the sample Q-13 from Qinglidi Mountain shows that a tectonic thermal event occurred from approximately 200 Ma to 150 Ma. The AFT ages of the Altay Mountains also show the uplift event in the Late Jurassic-Early Cretaceous (i.e., 160-130 Ma) [67]. Bao et al [92] proposed that the tectonic thermal event in this period was evidence of magmatic intrusion and fault activity in the Altay Mountains.…”

Section: Provenance Of U-ore-bearing Stratamentioning

confidence: 99%

“…However, many researchers have proposed that Jurassic magmatic activity occurred in Altay Mountain. The granite ages of Altay Mountain indicate that magmatism occurred from 131 Ma to 186 Ma [67,93,94]. The ages of zircon and AFT both indicate the occurrence of the Middle Jurassic magmatic event in the Altay Mountains, which was accordingly uplifted as one of the dominant provenance areas for the Xishanyao and Toutunhe Formations in the Kamust uranium deposit.…”

Section: Provenance Of U-ore-bearing Stratamentioning

confidence: 99%

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Constraints on Sandstone-Type Uranium Deposits by the Tectonic Uplift and Denudation Process in the Eastern Junggar Basin, Northwest China: Evidence from Apatite Fission Track and Detrital Zircon U-Pb Ages

et al. 2022

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The uplift and denudation history of the orogenic belt and the basin–mountain coupling process have directly or indirectly affected the generation, scale, and preservation of sandstone-type uranium deposits in the eastern Junggar Basin by controlling the uranium source, lithology, facies, hydrogeology, post-generation modification, and other mineralization conditions. Taking the eastern Junggar Basin as the research area, this study proposes the constraints on sandstone-type uranium deposits by the tectonic uplift and denudation history of the orogenic belt in the basin using the apatite fission track (AFT), detrital zircon geochronology, and other methods. The results of the AFT age test and thermal path simulation indicate that the orogenic belt in the eastern Junggar Basin underwent four rapid uplifts; (from approximately 300 Ma to approximately 250 Ma, from approximately 130 Ma to approximately 90 Ma, from approximately 65 Ma to approximately 30 Ma, and from approximately 20 Ma to 0 Ma). Moreover, the timing of the uplift has a spatial trend of gradually becoming younger from south to north. The detrital zircon U-Pb age test showed that the sediment source area of the basin is mainly distributed in three age intervals, i.e., 460–390, 360–270, and 190–170 Ma. The comprehensive evaluation of the clastic sediment composition, stratigraphic distribution of the erosion source area, and thermal history showed that a large amount of exposed Carboniferous–Permian granites in the Qinglidi and Karameri Mountain erosion source areas contributed dominant sediment material and uranium sources for the Triassic and Middle and Lower Jurassic strata in the basin. The Ordovician–Early Devonian granites only provided sediment sources for the Upper Triassic and Lower Jurassic strata in the basin. Altay Mountain contributed some sediment sources for the Middle and Upper Jurassic strata after the magmatic activity and rapid uplift occurred in the Middle Jurassic. Based on the comprehensive analysis of the influence of the tectonic uplift process of the orogenic belt and the transformation of material source areas on uranium mineralization, the granites in the erosion source areas are proposed to contribute both external and internal uranium sources for uranium mineralization. Uranium mineralization mainly occurred in the tectonic retreat period after the rapid uplifts of the Cretaceous and Paleogene. It was terminated by the intensive uplift-induced stratigraphic deformation in the Miocene.

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Tectonic-geomorphological evolution and provenance-sedimentary response: Insights from the Middle Jurassic–Lower Cretaceous, Junggar Basin, China

Zhu,

Li,

Chen

et al. 2023

Marine and Petroleum Geology

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The study of Yanshanian unconformity tectonic events in Northern Junggar Basin

Cited by 5 publications

References 3 publications

Litho‐mineralogy, geochemistry, and chronology for the genesis of the Kamust sandstone‐hosted uranium deposit, Junggar Basin, NW China

Litho‐mineralogy, geochemistry, and chronology for the genesis of the Kamust sandstone‐hosted uranium deposit, Junggar Basin, NW China

Constraints on Sandstone-Type Uranium Deposits by the Tectonic Uplift and Denudation Process in the Eastern Junggar Basin, Northwest China: Evidence from Apatite Fission Track and Detrital Zircon U-Pb Ages

Tectonic-geomorphological evolution and provenance-sedimentary response: Insights from the Middle Jurassic–Lower Cretaceous, Junggar Basin, China

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