Provenance of Uranium Mineralization of the Yuqia Area, Northwest China: Constraints from Detrital Zircon U-Pb Geochronology and Hf Isotopes

Huang, Guangwen; Pan, Jiayong; Xia, Fei; Yan, Jie; Zhang, Cheng-Yong; Wu, Datian; Liu, Ying

doi:10.1007/s12583-022-1654-9

Cited by 18 publications

(17 citation statements)

References 102 publications

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“…The geochemistry of clays and silty rocks can best indicate the material composition of sedimentary provenance. ,, Generally, immobile trace elements (e.g., Sc, Nb, Hf, Th, Zr, Y, etc.) are capable of maintaining their original concentrations throughout sedimentary processes, such as weathering, denudation, and transport, which is conducive to determining the geochemistry of source rocks. − Moreover, rare earth elements (REEs) are considered relatively immobile, and their contents in sediments are less subject to post-modification, including weathering and erosion.…”

Section: Discussionmentioning

confidence: 99%

“…The Tibetan Plateau experienced a thermal event in the Paleogene, when the dry and hot climate was favorable for enrichment of elements such as Ca, Mg, K, Na, Sr, and Ba. , Therefore, these elements can often be used for reconstructing paleoclimatic conditions. ,, The Sr/Ba ratio is generally used to evaluate the salinity in sedimentary water whereby Sr/Ba > 0.5 in sediments indicates marine water, Sr/Ba < 0.2 indicates freshwater, and 0.2 < Sr/Ba < 0.5 indicates brackish water. , Sr/Ba ratios of fine-grained clastic rocks in the Gongjue Formation are mostly concentrated within the interval of 0.14 to 0.90 (Table ), indicating brackish to marine paleowater conditions during deposition of this stratum in the Paleogene (Figures and a). The water salinity in the lacustrine system during the deposition of the Gongjue Formation is consistent with the occurrence of gypsum in this stratum (Figure e,f).…”

Section: Discussionmentioning

confidence: 99%

“…The rare earth element contents in fine-grained clastic rocks are dependent on the nature of the source area and are rarely subject to change due to tectonic activity and diagenesis. Therefore, they can provide information about the original sediments and tectonic environment in the source area. − Table shows a geochemical comparison between fine-grained clastic rocks of the Paleocene Gongjue Formation in the Qamdo Basin and sandstones formed in different tectonic settings. The ΣREE, Eu/Eu*, U, Cr, Rb/Sr, Th/U, Zr/Th, and Zr/Y values of fine-grained clastic rocks of the Gongjue Formation are close to their counterparts indicative of a continental arc environment (Table ).…”

Section: Discussionmentioning

confidence: 99%

“…7 The Chamdo Basin is a typical strike-slip pulling type basin in the northern part of the Sanjiang Tectonic Belt. 40 Ar/ 39 Ar dating, 8,9 K−Ar ages, 10 and the biostratigraphy of palynofossils and Ostracoda fossils 11 all indicate that sediments of the Qamdo Basin mainly formed in the late Eocene−early Oligocene. In sedimentological terms, since the 1990s, the sedimentary forms and tectonic framework of the filling area, 12,13 lithofacies paleogeography, and paleocurrents and sedimentary systems 14−17 have been well addressed, but there is still debate on the provenance of the Paleocene Gongjue Formation in the Qamdo Basin.…”

Section: Introductionmentioning

confidence: 95%

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Response of Paleogene Fine-Grained Clastic Rock Deposits in the South Qiangtang Basin to Environments and Thermal Events on the Qinghai-Tibet Plateau

Zhang

Zheng³

et al. 2023

ACS Omega

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The Chamdo Basin is a secondary basin in the eastern part of Tibet China and is one of the most promising of petroliferous basins for new petroleum exploration. The Qamdo Basin records a complex burial history from the Mesozoic to the Cenozoic; however, the poorly constrained sedimentology of Cenozoic strata in this basin has severely obscured the overall profile and impeded further explorations of oil and gas resources. Here, we conduct whole-rock geochemical analyses of major, trace, and rare earth elements in fine-grained clastic rocks of the Paleocene Gongjue Formation, Qamdo Basin to reveal depositional environments, provenance, and tectonic setting. Petrologically, the Gongjue Formation is dominated by red fine-grained sandy mudstones/siltstones with ripple marks. The high values of the chemical index of alteration (avg. of 78.93), chemical index of weathering (avg. of 90.10), and index of compositional variability (avg. of 2.5) suggest that the basin has undergone heavy weathering. Cross-plots of La vs Th, Th vs Sc vs Zr/10, and Th vs Co vs Zr/10 reveal a continental arc tectonic setting. Paleosalinity (Sr/Ba), paleoclimate (Sr/Cu), and redox proxies (V/Cr, U/Th, and enrichment factors of Mo and U) indicate brackish to saline and oxidizing paleowater masses during deposition of the Gongjue Formation. Provenance analyses via elements and petrology reveal that sediments in the Gongjue Formation are mainly derived from intermediate–acidic rocks of the upper crust. We conclude that the first and third members are more arid climate and heavily chemically weathered than the second member. In combination with previous studies of the structural evolution of the Qamdo Basin since the Paleogene, a model is built to describe the sedimentary environment and evolution of the Qamdo Basin during transition to the Paleocene. The first and third members, i.e., the Eg1 and Eg3 members of the Gongjue Formation, are dominated by an oxidizing environment of seawater-saltwater, and the climate ranges from warm and humid to arid and hot, with relatively stable environmental changes. The Eg2 member of the Gongjue Formation is dominated by an oxidizing environment of seawater-saltwater, and the climate ranges from warm and humid to arid and hot, with more frequent environmental evolution. Our model aids in better understanding of the Paleocene climate evolution of the eastern Tibetan Plateau.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 95%

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Response of Paleogene Fine-Grained Clastic Rock Deposits in the South Qiangtang Basin to Environments and Thermal Events on the Qinghai-Tibet Plateau

Zhang

Zheng³

et al. 2023

ACS Omega

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“…The mean crustal 176 Lu/ 177 Hf value used for the t DM2 was 0.015 . For detailed analysis methods and data processing, refer to the references. , …”

Section: Sample Collection and Analysis Methodsmentioning

confidence: 99%

Late Magmatic Activity in the Tarim Large Igneous Province: Evidence from the Puchang Granites

Min,

Chen,

Pan

et al. 2023

ACS Omega

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The magmatic evolution sequence and tectonic activity background of the Permian Tarim large igneous province were discussed based on the research of petrogeochemistry, chronology, and zircon Lu–Hf isotope of two types of granite distributed in the Puchang V–Ti–magnetite deposit in the northwestern margin of Tarim. The results show that the two types are characterized by high silica, alkali, and potassium content. Both types of granites are enriched with light rare earth elements, including porphyritic granites with a negative anomaly of Eu and biotite monzogranites with a weak positive anomaly of Eu. The trace elements generally show that the large-ion lithophile elements are enriched relative to the high-field-strength elements, P and Ti are obviously depleted, and Rb, U, and K are relatively enriched. The zircon U–Pb age of porphyritic granites is 275.7 ± 1.0 Ma, the ε Hf ( t ) value ranges from −6.6 to −3.3, and the t DM2 ranges from 1469 to 1684 Ma. The zircon U–Pb age of biotite monzogranites is 268.9 ± 1.4 Ma. The ε Hf ( t ) value ranges from −1.2 to 0.5, and the t DM2 ranges from 1232 to 1340 Ma. The two types of granite were formed in a postcollisional extensional environment at the end of the early Permian, which is related to the Permian Tarim mantle activity and asthenosphere upwelling. The porphyritic granite was derived from an enriched lithospheric mantle; the biotite monzogranite was formed by the melting of mantle with crust contamination; and basalt and intrusive complexes in the research area were formed in an extensional intraplate rift environment.

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Closing of the east Palaeo‐Tethys Ocean: Source–sink records from Middle Triassic sediments, Hainan Island, China

Gao,

Xu,

Kong

et al. 2024

Geological Journal

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During the Late Palaeozoic to Early Mesozoic, the eastern segment of the Palaeo–Tethys Ocean closed, resulting in the collision and amalgamation of the South and North Hainan Islands. However, the exact location of the collision and amalgamation remains controversial. The main collision locations are the Baisha, Jiusuo–Lingshui and Changjiang–Qionghai faults. The U–Pb age of detrital zircons was used to determine the main source area of the Middle Triassic basin in the eastern part of Hainan Island and the closed position of the eastern section of the Palaeo‐Tethys Ocean. The U–Pb dating of detrital zircons revealed that the Middle Triassic Lingwen Formation contains four age groups: 235–258, 335–446, 766–986 and >1000 Ma. Notably, rock masses aged 248–252 Ma that were formed in a post‐orogenic tension setting have been identified in the western region of Hainan Island, whereas no igneous rocks from this period have been discovered in the eastern region. The detrital zircon samples from the Lingwen Formation revealed a peak at 249 ± 2 Ma U–Pb age, which is important evidence indicating that the Changjiang–Qionghai Fault is the product of collision between the southern and northern Hainan terranes. Affected by the bipolar subduction of the eastern segment of the Palaeo‐Tethys Ocean, the collision and amalgamation of the South and North Hainan terranes occurred, and experienced a post‐collision (extensional) process at ca. 249 ± 2 Ma.

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Provenance of Uranium Mineralization of the Yuqia Area, Northwest China: Constraints from Detrital Zircon U-Pb Geochronology and Hf Isotopes

Cited by 18 publications

References 102 publications

Response of Paleogene Fine-Grained Clastic Rock Deposits in the South Qiangtang Basin to Environments and Thermal Events on the Qinghai-Tibet Plateau

Response of Paleogene Fine-Grained Clastic Rock Deposits in the South Qiangtang Basin to Environments and Thermal Events on the Qinghai-Tibet Plateau

Late Magmatic Activity in the Tarim Large Igneous Province: Evidence from the Puchang Granites

Closing of the east Palaeo‐Tethys Ocean: Source–sink records from Middle Triassic sediments, Hainan Island, China

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