Late Mesozoic rifting and its deep dynamic mechanisms in the central Sulu orogenic belt: Records from Lingshan Island

Zhou, Tengfei; Zhou, Yaoqi; Søager, Nina; Holm, Paul Martin; Zhang, Zhenkai; Wang, Jun; Zhao, Liang; Mu, Hongyu; Cheng, Yanjun; Liu, Feifei; Wang, Miao; Zhang, Yue; Zhang, Hui; Gu, Yangjian; Dong, Shihui; Zhao, Hanjie; Li, Manjie; Chen, Yang; Liu, Yanzi

doi:10.1007/s11430-021-9925-y

Cited by 8 publications

(6 citation statements)

References 106 publications

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“…(2) Tectonic setting in the Late Devonian It has been shown that the chemical compositions of the sediments can be related to plate tectonic processes, making geochemistry a powerful tool for recognizing ancient tectonic settings [50,[76][77][78]. The value of K 2 O/Na 2 O of sedimentary rock behaves differently from its SiO 2 content in different tectonic settings.…”

Section: Tectonic Implicationmentioning

confidence: 99%

Geochemistry, Detrital Zircon U-Pb Geochronology, and Lu-Hf Isotopes of the Metasedimentary Rocks (Xinghongpu Formation, Late Devonian) in the Central South Qinling Orogenic Belt: Implications for Provenance and Tectonics

Zhang

Zhou

et al. 2023

Minerals

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The Xinghongpu Formation is very important for understanding the Devonian tectonic evolution of the South Qinling orogenic belt. Geochemical, detrital zircon U-Pb-Hf isotopic studies were carried out on the Late Devonian metasedimentary rocks of the Xinghongpu Formation to constrain the depositional age, the provenance, and the tectonic setting. The detrital zircon U-Pb dating results revealed that the depositional age of the Xinghongpu Formation of the Late Devonian was not earlier than 363.2 Ma. The whole-rock geochemistry suggested that (1) this suite of metasedimentary rocks was mainly derived from quartzose sediments of mature continental provenance, with a small contribution from mafic and intermediate igneous provenance, and (2) the metasedimentary sandstone of the Xinghongpu Formation from the Late Devonian was deposited in an active continental margin to continental arc setting. The detailed detrital zircon U-Pb dating showed that the age spectra of detrital zircon could be divided into four groups: (1) 416–480 Ma, accounting for about 23%; (2) 740–850 Ma, accounting for about 19%; (3) 889–1017 Ma, accounting for about 19%; and (4) 1072–1146 Ma, accounting for about 12%. It also contained a group of Early Proterozoic zircons. The age and Hf isotope of the detrital zircons suggested that the clastic sediment deposited in the Xinghongpu Formation mainly came from the South Qinling Orogenic Belt and the North Qinling Orogenic Belt. The detrital zircon Lu-Hf isotopes indicated that most zircons were the products of the ancient crustal remelting, and the mantle-derived magmatic sources contributed to the provenance. The Xinghongpu Fm. formed in an oceanic basin in a continental margin environment with arc systems.

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Section: Tectonic Implicationmentioning

confidence: 99%

Geochemistry, Detrital Zircon U-Pb Geochronology, and Lu-Hf Isotopes of the Metasedimentary Rocks (Xinghongpu Formation, Late Devonian) in the Central South Qinling Orogenic Belt: Implications for Provenance and Tectonics

Zhang

Zhou

et al. 2023

Minerals

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“…In Late Cretaceous, the stable sedimentary stage was entered, and the Wangshi Formation strata were deposited. At the end of the Paleocene, regional compression was strengthened, and the rift basin stage of development ended, forming the present tectonic pattern [1,22].…”

Section: Geological Settingmentioning

confidence: 99%

“…Among them, the cumulative thickness of dark mudstone is 520 m, and the cumulative thickness of dark argillaceous siltstone and siltstone is 450 m. Overall, the Laiyang Formation in well LK-1 is a potential high-quality source-rock development horizon with dark fine-grained deposits [10] (Figure 1d). [24]); (b) geological map of the Riqingwei basin (modified from [25]); (c) geological map of the Lingshan Island, location of well LK-1(modified from [22]); and (d) composite stratigraphic column and sampling locations of the Laiyang Formation in well LK-1(modified from [22]).…”

Section: Geological Settingmentioning

confidence: 99%

“…Methods for evaluating organic-matter abundance in source-rock samples include TOC content determination, rock pyrolysis analysis and Chloroform bitumen "A" content [24]); (b) geological map of the Riqingwei basin (modified from [25]); (c) geological map of the Lingshan Island, location of well LK-1(modified from [22]); and (d) composite stratigraphic column and sampling locations of the Laiyang Formation in well LK-1(modified from [22]).…”

Section: Geochemical Analysismentioning

confidence: 99%

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Geochemical Characteristics and Evaluation Criteria of Overmature Source Rock of the Laiyang Formation in Well LK-1, Riqingwei Basin, Eastern China

Chen

Zhou

et al. 2023

Energies

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Total organic carbon (TOC) and hydrocarbon generation potential (Pg) are essential parameters for the qualitative evaluation of source rock and the basis for evaluating hydrocarbon resources in petroliferous basins. However, there will be some deviations in evaluating hydrocarbon resources of overmature source rock by using TOC and Pg. The super-thick overmature source rock of the Early Cretaceous Laiyang Formation was found in well LK-1, the Riqingwei Basin. To accurately understand the oil and gas potential of the Riqingwei Basin, this paper conducted a systematic organic geochemical analysis of the overmature source rock of the Early Cretaceous Laiyang Formation found in well LK-1. Combined with the results of previous thermal simulation tests on hydrocarbon generation of low-maturity samples in the Jiaolai Basin, the original total organic carbon (TOC0) content of source rock in well LK-1 was recovered and the evaluation criteria of overmature source rock was established. Results: (1) The average TOC content of well LK-1 source-rock samples is 1.25 wt.%, and the average Pg content is 0.11 mg/g. The type of organic matter is mainly type II2, including a small amount of type II1 and type III. The average reflectance of vitrinite (Ro) is 4.35%, which belongs to overmature source rock of a poor–fair level and mixed kerogen. (2) After recovery calculation, these samples’ original hydrocarbon generation potential (Pg0) contents ranged from 0.63 to 108.1 mg/g, with an average value of 6.76 mg/g. Furthermore, the TOC0 contents of the analyzed source-rock samples ranged from 0.62 to 30.6 wt.%, with an average value of 2.01 wt.%. It belongs to fair–good source rock, showing better hydrocarbon generation potential. (3) According to the relationship between the Pg0, Pg and TOC content, the evaluation standard for overmature source rock in well LK-1 was established. Under the evaluation standard of overmature source rock, a source rock with a TOC content exceeding 0.6% and a Pg content greater than 0.1 mg/g can be identified as a good source rock. This paper provides a foundation for the fine classification and evaluation of the overmature source rock of the Riqingwei Basin.

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“…In recent years, previous studies on magma and magmatic rocks of the Qingshan Group in Lingshan Island have focused on magmatic rock geochemistry, geotectonic, coupling processes of magmatic activity as well as tectonic movement, and magmatic evolution (Zhang et al, 2013;Zhang et al, 2015;Zhou et al, 2015;Liang, 2016;Zhou et al, 2017;Ao et al, 2018;Dong, 2020;Zhou et al, Forthcoming 2022). However, few studies have focused on the high-differential magmatic rocks of the island, and research on the volcanic activity cycle has been limited to the evolutionary sequencing (Zhang, 2017).…”

Section: Introductionmentioning

confidence: 99%

Early Cretaceous Volcanic Edifice Activity in the Sulu Orogenic Belt: Evidences From Volcanic-Sedimentary Rhythm Characteristics in Lingshan Island, Eastern Shandong Province, China

et al. 2022

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A rhyolitic tuff-mudstone interbedded rock outcrop with a good rhythm is found in the Yangjiaodong area of Lingshan Island, eastern Shandong Province. The volcanic eruption dynamics process was investigated by using the rhythm of volcanic accumulation method. Combined with the geologic setting of the study area, the parameter deposition rate is 6.5 m/Ma, and the mudstone compaction factor is 0.3 because the study area is the Ri-Qing-Wei Basin, which is the volcanic back-arc basin with insufficient source supply. Based on this, the time span of the analyzed sample was calculated to be 2.24 Ma, which represents the duration of this eruption event. We used software called Acycle to finish this research. The result shows cyclicity of 2.296, 5.78, 8.475, and 15.625 kyr and the scales of 2.17, 2.94, 3.12, and 18.87 m repeatability. Considering that magma eruption is affected by changing melt conditions, the crystallinity, water content, temperature, and pressure are comprehensively considered “activation conditions” to predict the dynamic process within the near-surface magma chamber, which is characterized using a pulsed volcanic eruption model.

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Late Mesozoic rifting and its deep dynamic mechanisms in the central Sulu orogenic belt: Records from Lingshan Island

Cited by 8 publications

References 106 publications

Geochemistry, Detrital Zircon U-Pb Geochronology, and Lu-Hf Isotopes of the Metasedimentary Rocks (Xinghongpu Formation, Late Devonian) in the Central South Qinling Orogenic Belt: Implications for Provenance and Tectonics

Geochemistry, Detrital Zircon U-Pb Geochronology, and Lu-Hf Isotopes of the Metasedimentary Rocks (Xinghongpu Formation, Late Devonian) in the Central South Qinling Orogenic Belt: Implications for Provenance and Tectonics

Geochemical Characteristics and Evaluation Criteria of Overmature Source Rock of the Laiyang Formation in Well LK-1, Riqingwei Basin, Eastern China

Early Cretaceous Volcanic Edifice Activity in the Sulu Orogenic Belt: Evidences From Volcanic-Sedimentary Rhythm Characteristics in Lingshan Island, Eastern Shandong Province, China

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