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Menyuan Arc Complex

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Image
Published: 09 September 2021
Figure 8. Cathodoluminescence images for representative samples in the Menyuan Arc Complex, northern Tibet Plateau.
Image
Published: 09 September 2021
Figure 3. Geological profile showing field relationship in arc section from Menyuan Arc Complex, northern Tibet Plateau. Grt—garnet; Opx—orthopyroxene; Ky—kyanite; Bt—biotite.
Image
Published: 09 September 2021
Figure 2. Schematic geologic map showing major lithotectonic units of the Menyuan Arc Complex, northern Tibet Plateau, showing sample locations.
Image
Published: 09 September 2021
Figure 10. Diagram of Lu-Hf isotope for pluton, volcanic rocks, and migmatites from Menyuan Arc Complex, northern Tibet Plateau. CHUR—chondritic uniform reservoir.
Image
Published: 09 September 2021
Figure 13. Schematic tectonic diagram showing tectonic evolution of the Menyuan Arc Complex, northern Tibet Plateau. NQD—North Qaidam subduction-collision zone; OB—Oulongbuluke; QLB—Qilian Block; ALB—Alxa Block.
Image
Published: 09 September 2021
Figure 4. Microphotographs indicating mineral associations and microtextures of plutons and volcanic rocks from Menyuan Arc Complex, northern Tibet Plateau. (A) gabbro, (B) granodiorite, (C) mafic enclave, (D) andesite. Cpx—clinopyroxene; Pl—plagioclase; Amp—amphibolite.
Image
Published: 09 September 2021
Figure 11. Chondrite-normalized rare earth elements and primitive mantle-normalized trace element patterns for plutons and volcanic rocks from Menyuan Arc Complex, northern Tibet Plateau. Primitive mantle and chondrite-normalized values are from Sun and McDonough (1989).
Image
Published: 09 September 2021
Figure 9. Zircon laser ablation-inductively coupled plasma–mass spectrometry data for representative samples in the Menyuan Arc Complex, northern Tibet Plateau. MSWD—mean square weighted deviation; SHRIMP—sensitive high-resolution ion microprobe; Grt-Ky—garnet-kyanite.
Image
Published: 09 September 2021
Figure 5. Microphotographs showing mineral associations and microtextures of high-grade metamorphic rocks from Menyuan Arc Complex, northern Tibet Plateau. (A and B) Mafic granulite mainly consists of garnet (Grt), clinopyroxene (Cpx), amphibole (Amp), plagioclase (Pl), and quartz (Qtz); (C
Journal Article
Journal: GSA Bulletin
Published: 09 September 2021
GSA Bulletin (2022) 134 (5-6): 1301–1318.
...Figure 8. Cathodoluminescence images for representative samples in the Menyuan Arc Complex, northern Tibet Plateau. ...
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Journal Article
Published: 13 March 2023
Bulletin of the Seismological Society of America (2023) 113 (3): 976–996.
... † The authors Pengfei Niu, Zhujun Han, and Kechang Li contributed equally to this article. 5 August 2022 © Seismological Society of America KEY POINTS The Menyuan earthquake generated complex multifault ruptures along the Lenglongling and Tuolaishan (TLSF) faults. The earthquake...
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Journal Article
Published: 15 September 2022
Seismological Research Letters (2023) 94 (1): 26–38.
...Ping He; Chengli Liu; Yangmao Wen; Xiaoping Hu; Kaihua Ding; Caijun Xu Abstract On 8 January 2022, an M w 6.6 earthquake occurred along the Lenglongling fault (LLLF) (Menyuan, Qinghai Province, China), in the northeast margin of the Tibetan plateau. Here, we use imaging geodesy observations from...
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Journal Article
Published: 01 July 2022
Journal of Paleontology (2022) 96 (4): 875–885.
... for the information they provide on age and geographical associations. The northwestern part of Tibet is one of Earth's most complex areas geologically, and its early Paleozoic history is particularly difficult to decipher. During the Cambrian, the Qilian Mountains comprised a series of island arc complexes that were...
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Journal Article
Journal: GSA Bulletin
Published: 05 March 2021
GSA Bulletin (2021) 133 (11-12): 2393–2417.
... marble is thrust over Silurian slightly metamorphosed submarine sedimentary strata along a ∼45° south-dipping fault near Menyuan; the location of sample WC09-13-2014 (10) is shown. (C) The lower Paleozoic sandstone unit is intruded by the Ordovician granitoid that is cut by the mafic dike; the location...
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Journal Article
Published: 19 March 2025
Seismological Research Letters (2025)
... ), the complexity inherent in precursors and the difference of earthquakes ( Scholz et al. , 1973 ; Cicerone et al. , 2009 ; Wang et al. , 2018 ) together limit human understanding of whether earthquakes are predictable ( Geller et al. , 1997 ; Wyss, 1997 ). For example, the anticipated M 6.0 earthquake...
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Journal Article
Journal: GSA Bulletin
Published: 26 February 2025
GSA Bulletin (2025)
... and tectonic deformation of subduction accretionary complexes (Wu et al., 2011a, 2011b; Chen et al., 2014; Yu et al., 2015a; Li et al., 2018, 2023a) in the North Qilian orogen. Regarding the early Paleozoic tectonic evolution of the North Qilian orogen, some researchers have proposed a complete trench-arc...
Journal Article
Journal: Geosphere
Published: 18 October 2024
Geosphere (2024) 20 (6): 1468–1482.
... volcanic rocks, as well as Ordovician back-arc volcanic rocks and ophiolite complexes ( Xia et al., 2003 , 2012 ; Tseng et al., 2009 ; Wu et al., 2011 ; Song et al., 2013 , 2017 ; Yan et al., 2019 ; Fu et al., 2020 ). However, due to the intricate geologic nature of this region, several crucial...
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Journal Article
Journal: GSA Bulletin
Published: 22 March 2022
GSA Bulletin (2022) 134 (11-12): 3079–3098.
...) elements of a structurally dismembered Mariana-type intraoceanic subduction system (e.g., Xiao et al., 2009 ; Song et al., 2013 ; Fu et al., 2018 , 2019 , 2021 ; Yan et al., 2021 ), including ophiolite, accretionary complex, HP rocks, island arc, and forearc/ backarc basins. The Central Qilian...
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Journal Article
Published: 13 March 2024
Seismological Research Letters (2024) 95 (4): 2092–2104.
...., an asperity area in the northern part from Ruisui to Hualien, a stable aseismic creep in the southern part from Taitung to Guanshan, and a transitional region in the central part from Guanshan to Ruisui) was caused by a mixture of the thrust fore‐arc basin rocks and subduction complex in this ocean–land plate...
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Journal Article
Published: 04 May 2023
The Seismic Record (2023) 3 (2): 105–115.
... mainshock extends into the Hatay triple junction between the EAF, the Cyprus arc, and the Dead Sea fault branching to the south (Fig.  1b ). For the 2nd mainshock, we discretized the fault rupture model into three segments, each subdivided into 5 km × 5 km subfaults. Segment 2‐a, on which rupture...
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