Early Cretaceous tectonomagmatic evolution and basin development of western Bangong–Nujiang suture: A complete history of soft collision

Li, Xingkui; Chen, Jun; Wang, Rucheng; Cai, Li; Wang, Ming; Liu, Jin-Heng; Yu, Yunpeng; Luo, An‐Bo

doi:10.1016/j.lithos.2019.06.030

Cited by 10 publications

(4 citation statements)

References 71 publications

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“…Therefore, we suggest that the rupture of the BNO from both sides occurs at 130 Ma. This age has been endorsed by other studies (Zhu et al, 2016;Li Y. et al, 2018;Li et al, 2019).…”

Section: Divergent Double Subduction and Oceanic Crust Rupturementioning

confidence: 56%

“…Two main models are in dispute. The first is a hard collision caused by northward subduction (Han et al, 2020;Wang et al, 2020;Yan and Zhang, 2020) and the second is a soft collision caused by DDS (Zhu et al, 2016;Li S. M. et al, 2018;Li et al, 2019;Luo A. B. et al, 2022a;Luo A-B.…”

Section: Introductionmentioning

confidence: 99%

“…(Shi et al, 2022). 3) The comprehensive research on lava (High-K quartz-diorites, low-K tholeiitic andesites, bajaitic latites) in southern Qiangtang and sediments records the process from DDS to soft collision (Li et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

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Early cretaceous bimodal volcanic rocks in Wuga Co area, central tibet: The first identification of direct products derived from slab sinking in the Bangong-Nujiang suture zone

Chen

Liu²,

Wang³

et al. 2023

Front. Earth Sci.

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Introduction: The Bangong-Nujiang Suture Zone (BNSZ) in central Tibet is a remnant of the Bangong-Nujiang Ocean that records its entire Wilson Cycle. The model of divergent double-sided subduction (DDS) is crucial for elucidating the evolution of tectonomagmatic activity on both sides of the BNSZ and for understanding why no high-pressure metamorphic rocks occur in the BNSZ. However, the DDS geodynamics remain poorly constrained. In particular, there is a lack of reports on magmatic rocks directly associated with slab sinking in the DDS terminal stage.Methods: This study presents new geochronological, geochemical, and isotopic data for the Early Cretaceous bimodal volcanic rocks around the Wuga Co area.Results: The bimodal volcanic rocks are divided into the Wuga Co rhyolites (SiO2 = 77.0–79.0 wt%) and the Wuga Co basaltic andesites (SiO2 = 53.9–55.5 wt%). The isotopic values of the Wuga Co basaltic andesites with low (87Sr/86Sr)i values (+0.7040 to +0.7044) and high εNd(t) values (+3.8 to +4.1) lie among three endmembers (the BNO sediments in accretionary wedge, depleted mantle and the BNO slab).Discussion: These values indicate the partial melting of a mantle peridotite that interacted with the subducted slab and sediment in the accretionary wedge, which was caused by the sinking of the Bangong-Nujiang oceanic slab. The Wuga Co rhyolites (108 Ma) have low (87Sr/86Sr)i values (+0.703 to +0.706), high εNd(t) values (+2.25 to +2.49), and high εHf(t) values (+5.6 to +10.0). These values indicate that the rhyolite formed by partial melting of juvenile basaltic crust. This study also collected Hf isotope data from both sides of the BNSZ to constrain its evolution. Our results show that the εHf(t) values of magma on both sides of the BNSZ were elevated simultaneously at 130 Ma, which may be caused by the Bangong-Nujiang oceanic slab rupture. Based on these new data, we propose that the Bangong-Nujiang oceanic slab ruptured from the two overlying terranes at approximately 130 Ma and subsequently sank into the mantle at approximately 108 Ma.

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“…Therefore, we suggest that the rupture of the BNO from both sides occurs at 130 Ma. This age has been endorsed by other studies (Zhu et al, 2016;Li Y. et al, 2018;Li et al, 2019).…”

Section: Divergent Double Subduction and Oceanic Crust Rupturementioning

confidence: 56%

Section: Introductionmentioning

confidence: 99%

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Early cretaceous bimodal volcanic rocks in Wuga Co area, central tibet: The first identification of direct products derived from slab sinking in the Bangong-Nujiang suture zone

Chen

Liu²,

Wang³

et al. 2023

Front. Earth Sci.

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“…The main points of operation are: Start suture from the inside of the uterine cavity. Divide the lower uterine cavity surface into four areas, front, back, left, and right, and perform partial or full lateral narrowing and suture according to the bleeding situation [20,21] . This surgical plan has the following three advantages: The bladder is no longer pushed down, and the operation is simple to avoid extensive bleeding in the uterine bladder adhesion site.…”

Section: Observation and Follow-upmentioning

confidence: 99%

Treatment of Pernicious Placenta Previa with Ergonoxine and Spiral Suture of Lower Uterine Segment

Li¹,

Wang²,

An³

et al. 2021

ijps

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Li et al.: Treatment of PPP with Ergonovine and lower uterine spiral sutureThe aim of this study was to investigate the effect of ergonovine combined with spiral suture of lower uterine segment in the treatment of pernicious placenta previa hemorrhage after cesarean section. A retrospective analysis of the clinical data of 74 patients hospitalized in our hospital due to pernicious placenta previa from January to February 2016, divided them into a study group and a control group. The study group included 37 patients who received ergonovine injection into the lower uterine muscle wall+spiral suture of the lower uterus during cesarean section, and the control group included 37 cases who received the conventional method and row suture of the lower uterus. The blood loss during operation, 2 h after operation and 2-24 h after operation, operation time, hysterectomy rate, postoperative uterine involution and incision healing were observed. The systolic and diastolic blood pressure, pulse level and the incidence of postoperative complications were compared between the two groups. The results showed that the combined application of ergonovine and lower uterine spiral suture was effective in treating pernicious placenta previa hemorrhage after cesarean section. It was a simple, easy, safe and reliable surgical hemostasis method, which could effectively control massive bleeding during the operation, avoid the removal of the uterus, and completely remove the placenta and restored the shape of the lower part of the uterus by ring-shaped narrowing, which helped the uterus to regenerate after delivery.

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Petrogenesis of Late Cretaceous A1-type alkali monogenetic volcanoes, Wadi Natash, South Eastern Desert, Egypt, and their implications for Nb mineralization and tectonic evolution

Khalaf,

Sano

2023

Arab J Geosci

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Early Cretaceous tectonomagmatic evolution and basin development of western Bangong–Nujiang suture: A complete history of soft collision

Cited by 10 publications

References 71 publications

Early cretaceous bimodal volcanic rocks in Wuga Co area, central tibet: The first identification of direct products derived from slab sinking in the Bangong-Nujiang suture zone

Early cretaceous bimodal volcanic rocks in Wuga Co area, central tibet: The first identification of direct products derived from slab sinking in the Bangong-Nujiang suture zone

Treatment of Pernicious Placenta Previa with Ergonoxine and Spiral Suture of Lower Uterine Segment

Petrogenesis of Late Cretaceous A1-type alkali monogenetic volcanoes, Wadi Natash, South Eastern Desert, Egypt, and their implications for Nb mineralization and tectonic evolution

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