A flat lithosphere-asthenosphere boundary (∼60 km depth) in central Eastern China: Implications for lithospheric destruction and evolution
Detailed knowledge of the lithospheric thickness is important for understanding the tectonic evolution in central Eastern China, characterized by ore deposits in the Middle-Lower Yangtze Metallogenic Belt (MLYMB). We realize this goal by applying the common conversion point (CCP) stacking to Sp rece...
Ausführliche Beschreibung
Autor*in: |
Li, Xinfu [verfasserIn] He, Xiaobo [verfasserIn] Xu, Shuo [verfasserIn] Li, Hongyi [verfasserIn] Jiang, Guoming [verfasserIn] |
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Format: |
E-Artikel |
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Sprache: |
Englisch |
Erschienen: |
2024 |
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Schlagwörter: |
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Übergeordnetes Werk: |
Enthalten in: Journal of Asian earth sciences - Amsterdam [u.a.] : Elsevier Science, 1997, 263 |
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Übergeordnetes Werk: |
volume:263 |
DOI / URN: |
10.1016/j.jseaes.2024.106035 |
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Katalog-ID: |
ELV067213936 |
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520 | |a Detailed knowledge of the lithospheric thickness is important for understanding the tectonic evolution in central Eastern China, characterized by ore deposits in the Middle-Lower Yangtze Metallogenic Belt (MLYMB). We realize this goal by applying the common conversion point (CCP) stacking to Sp receiver functions (SRF) computed from 234 broadband seismic stations in central Eastern China. Distinct negative signals are identified below the Moho in all the CCP stacking profiles, which we interpret as the S-to-P conversions from the lithosphere-asthenosphere boundary (LAB). The imaged LAB is as shallow as ∼60 km with a standard deviation of ∼5 km in the whole region, in contrast to the typical cratonic lithosphere root down to 200 km depth or more, indicating the widespread lithospheric thinning in the study region. Such a flat LAB indicates that the regional lithosphere has been destructed uniformly, shedding light on its destructive mechanism, which we attribute to lithospheric delamination along a mid-lithospheric discontinuity (MLD). Compared to the MLD (∼80–100 km) observed in the western North China Craton, our observations suggest that the destructed lithosphere probably has been further stretched due to slab rollback and trench retreat. In contrast, lithospheric cooling-induced accretion plays a minor role in the lithospheric evolution after destruction. | ||
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700 | 1 | |a Jiang, Guoming |e verfasserin |4 aut | |
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allfields |
10.1016/j.jseaes.2024.106035 doi (DE-627)ELV067213936 (ELSEVIER)S1367-9120(24)00030-0 DE-627 ger DE-627 rda eng 550 VZ 38.00 bkl Li, Xinfu verfasserin aut A flat lithosphere-asthenosphere boundary (∼60 km depth) in central Eastern China: Implications for lithospheric destruction and evolution 2024 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Detailed knowledge of the lithospheric thickness is important for understanding the tectonic evolution in central Eastern China, characterized by ore deposits in the Middle-Lower Yangtze Metallogenic Belt (MLYMB). We realize this goal by applying the common conversion point (CCP) stacking to Sp receiver functions (SRF) computed from 234 broadband seismic stations in central Eastern China. Distinct negative signals are identified below the Moho in all the CCP stacking profiles, which we interpret as the S-to-P conversions from the lithosphere-asthenosphere boundary (LAB). The imaged LAB is as shallow as ∼60 km with a standard deviation of ∼5 km in the whole region, in contrast to the typical cratonic lithosphere root down to 200 km depth or more, indicating the widespread lithospheric thinning in the study region. Such a flat LAB indicates that the regional lithosphere has been destructed uniformly, shedding light on its destructive mechanism, which we attribute to lithospheric delamination along a mid-lithospheric discontinuity (MLD). Compared to the MLD (∼80–100 km) observed in the western North China Craton, our observations suggest that the destructed lithosphere probably has been further stretched due to slab rollback and trench retreat. In contrast, lithospheric cooling-induced accretion plays a minor role in the lithospheric evolution after destruction. Sp receiver functions Central Eastern China Lithosphere-asthenosphere boundary Lithospheric thinning He, Xiaobo verfasserin aut Xu, Shuo verfasserin aut Li, Hongyi verfasserin aut Jiang, Guoming verfasserin aut Enthalten in Journal of Asian earth sciences Amsterdam [u.a.] : Elsevier Science, 1997 263 Online-Ressource (DE-627)303391960 (DE-600)1494743-2 (DE-576)106846035 1878-5786 nnns volume:263 GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OPC-GGO GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_187 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2088 GBV_ILN_2106 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2470 GBV_ILN_2507 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4242 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 38.00 Geowissenschaften: Allgemeines VZ AR 263 |
spelling |
10.1016/j.jseaes.2024.106035 doi (DE-627)ELV067213936 (ELSEVIER)S1367-9120(24)00030-0 DE-627 ger DE-627 rda eng 550 VZ 38.00 bkl Li, Xinfu verfasserin aut A flat lithosphere-asthenosphere boundary (∼60 km depth) in central Eastern China: Implications for lithospheric destruction and evolution 2024 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Detailed knowledge of the lithospheric thickness is important for understanding the tectonic evolution in central Eastern China, characterized by ore deposits in the Middle-Lower Yangtze Metallogenic Belt (MLYMB). We realize this goal by applying the common conversion point (CCP) stacking to Sp receiver functions (SRF) computed from 234 broadband seismic stations in central Eastern China. Distinct negative signals are identified below the Moho in all the CCP stacking profiles, which we interpret as the S-to-P conversions from the lithosphere-asthenosphere boundary (LAB). The imaged LAB is as shallow as ∼60 km with a standard deviation of ∼5 km in the whole region, in contrast to the typical cratonic lithosphere root down to 200 km depth or more, indicating the widespread lithospheric thinning in the study region. Such a flat LAB indicates that the regional lithosphere has been destructed uniformly, shedding light on its destructive mechanism, which we attribute to lithospheric delamination along a mid-lithospheric discontinuity (MLD). Compared to the MLD (∼80–100 km) observed in the western North China Craton, our observations suggest that the destructed lithosphere probably has been further stretched due to slab rollback and trench retreat. In contrast, lithospheric cooling-induced accretion plays a minor role in the lithospheric evolution after destruction. Sp receiver functions Central Eastern China Lithosphere-asthenosphere boundary Lithospheric thinning He, Xiaobo verfasserin aut Xu, Shuo verfasserin aut Li, Hongyi verfasserin aut Jiang, Guoming verfasserin aut Enthalten in Journal of Asian earth sciences Amsterdam [u.a.] : Elsevier Science, 1997 263 Online-Ressource (DE-627)303391960 (DE-600)1494743-2 (DE-576)106846035 1878-5786 nnns volume:263 GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OPC-GGO GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_187 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2088 GBV_ILN_2106 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2470 GBV_ILN_2507 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4242 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 38.00 Geowissenschaften: Allgemeines VZ AR 263 |
allfields_unstemmed |
10.1016/j.jseaes.2024.106035 doi (DE-627)ELV067213936 (ELSEVIER)S1367-9120(24)00030-0 DE-627 ger DE-627 rda eng 550 VZ 38.00 bkl Li, Xinfu verfasserin aut A flat lithosphere-asthenosphere boundary (∼60 km depth) in central Eastern China: Implications for lithospheric destruction and evolution 2024 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Detailed knowledge of the lithospheric thickness is important for understanding the tectonic evolution in central Eastern China, characterized by ore deposits in the Middle-Lower Yangtze Metallogenic Belt (MLYMB). We realize this goal by applying the common conversion point (CCP) stacking to Sp receiver functions (SRF) computed from 234 broadband seismic stations in central Eastern China. Distinct negative signals are identified below the Moho in all the CCP stacking profiles, which we interpret as the S-to-P conversions from the lithosphere-asthenosphere boundary (LAB). The imaged LAB is as shallow as ∼60 km with a standard deviation of ∼5 km in the whole region, in contrast to the typical cratonic lithosphere root down to 200 km depth or more, indicating the widespread lithospheric thinning in the study region. Such a flat LAB indicates that the regional lithosphere has been destructed uniformly, shedding light on its destructive mechanism, which we attribute to lithospheric delamination along a mid-lithospheric discontinuity (MLD). Compared to the MLD (∼80–100 km) observed in the western North China Craton, our observations suggest that the destructed lithosphere probably has been further stretched due to slab rollback and trench retreat. In contrast, lithospheric cooling-induced accretion plays a minor role in the lithospheric evolution after destruction. Sp receiver functions Central Eastern China Lithosphere-asthenosphere boundary Lithospheric thinning He, Xiaobo verfasserin aut Xu, Shuo verfasserin aut Li, Hongyi verfasserin aut Jiang, Guoming verfasserin aut Enthalten in Journal of Asian earth sciences Amsterdam [u.a.] : Elsevier Science, 1997 263 Online-Ressource (DE-627)303391960 (DE-600)1494743-2 (DE-576)106846035 1878-5786 nnns volume:263 GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OPC-GGO GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_187 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2088 GBV_ILN_2106 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2470 GBV_ILN_2507 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4242 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 38.00 Geowissenschaften: Allgemeines VZ AR 263 |
allfieldsGer |
10.1016/j.jseaes.2024.106035 doi (DE-627)ELV067213936 (ELSEVIER)S1367-9120(24)00030-0 DE-627 ger DE-627 rda eng 550 VZ 38.00 bkl Li, Xinfu verfasserin aut A flat lithosphere-asthenosphere boundary (∼60 km depth) in central Eastern China: Implications for lithospheric destruction and evolution 2024 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Detailed knowledge of the lithospheric thickness is important for understanding the tectonic evolution in central Eastern China, characterized by ore deposits in the Middle-Lower Yangtze Metallogenic Belt (MLYMB). We realize this goal by applying the common conversion point (CCP) stacking to Sp receiver functions (SRF) computed from 234 broadband seismic stations in central Eastern China. Distinct negative signals are identified below the Moho in all the CCP stacking profiles, which we interpret as the S-to-P conversions from the lithosphere-asthenosphere boundary (LAB). The imaged LAB is as shallow as ∼60 km with a standard deviation of ∼5 km in the whole region, in contrast to the typical cratonic lithosphere root down to 200 km depth or more, indicating the widespread lithospheric thinning in the study region. Such a flat LAB indicates that the regional lithosphere has been destructed uniformly, shedding light on its destructive mechanism, which we attribute to lithospheric delamination along a mid-lithospheric discontinuity (MLD). Compared to the MLD (∼80–100 km) observed in the western North China Craton, our observations suggest that the destructed lithosphere probably has been further stretched due to slab rollback and trench retreat. In contrast, lithospheric cooling-induced accretion plays a minor role in the lithospheric evolution after destruction. Sp receiver functions Central Eastern China Lithosphere-asthenosphere boundary Lithospheric thinning He, Xiaobo verfasserin aut Xu, Shuo verfasserin aut Li, Hongyi verfasserin aut Jiang, Guoming verfasserin aut Enthalten in Journal of Asian earth sciences Amsterdam [u.a.] : Elsevier Science, 1997 263 Online-Ressource (DE-627)303391960 (DE-600)1494743-2 (DE-576)106846035 1878-5786 nnns volume:263 GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OPC-GGO GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_187 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2088 GBV_ILN_2106 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2470 GBV_ILN_2507 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4242 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 38.00 Geowissenschaften: Allgemeines VZ AR 263 |
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10.1016/j.jseaes.2024.106035 doi (DE-627)ELV067213936 (ELSEVIER)S1367-9120(24)00030-0 DE-627 ger DE-627 rda eng 550 VZ 38.00 bkl Li, Xinfu verfasserin aut A flat lithosphere-asthenosphere boundary (∼60 km depth) in central Eastern China: Implications for lithospheric destruction and evolution 2024 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Detailed knowledge of the lithospheric thickness is important for understanding the tectonic evolution in central Eastern China, characterized by ore deposits in the Middle-Lower Yangtze Metallogenic Belt (MLYMB). We realize this goal by applying the common conversion point (CCP) stacking to Sp receiver functions (SRF) computed from 234 broadband seismic stations in central Eastern China. Distinct negative signals are identified below the Moho in all the CCP stacking profiles, which we interpret as the S-to-P conversions from the lithosphere-asthenosphere boundary (LAB). The imaged LAB is as shallow as ∼60 km with a standard deviation of ∼5 km in the whole region, in contrast to the typical cratonic lithosphere root down to 200 km depth or more, indicating the widespread lithospheric thinning in the study region. Such a flat LAB indicates that the regional lithosphere has been destructed uniformly, shedding light on its destructive mechanism, which we attribute to lithospheric delamination along a mid-lithospheric discontinuity (MLD). Compared to the MLD (∼80–100 km) observed in the western North China Craton, our observations suggest that the destructed lithosphere probably has been further stretched due to slab rollback and trench retreat. In contrast, lithospheric cooling-induced accretion plays a minor role in the lithospheric evolution after destruction. Sp receiver functions Central Eastern China Lithosphere-asthenosphere boundary Lithospheric thinning He, Xiaobo verfasserin aut Xu, Shuo verfasserin aut Li, Hongyi verfasserin aut Jiang, Guoming verfasserin aut Enthalten in Journal of Asian earth sciences Amsterdam [u.a.] : Elsevier Science, 1997 263 Online-Ressource (DE-627)303391960 (DE-600)1494743-2 (DE-576)106846035 1878-5786 nnns volume:263 GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OPC-GGO GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_187 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2088 GBV_ILN_2106 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2470 GBV_ILN_2507 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4242 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 38.00 Geowissenschaften: Allgemeines VZ AR 263 |
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550 VZ 38.00 bkl A flat lithosphere-asthenosphere boundary (∼60 km depth) in central Eastern China: Implications for lithospheric destruction and evolution Sp receiver functions Central Eastern China Lithosphere-asthenosphere boundary Lithospheric thinning |
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ddc 550 bkl 38.00 misc Sp receiver functions misc Central Eastern China misc Lithosphere-asthenosphere boundary misc Lithospheric thinning |
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ddc 550 bkl 38.00 misc Sp receiver functions misc Central Eastern China misc Lithosphere-asthenosphere boundary misc Lithospheric thinning |
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A flat lithosphere-asthenosphere boundary (∼60 km depth) in central Eastern China: Implications for lithospheric destruction and evolution |
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A flat lithosphere-asthenosphere boundary (∼60 km depth) in central Eastern China: Implications for lithospheric destruction and evolution |
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Li, Xinfu |
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Journal of Asian earth sciences |
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Li, Xinfu He, Xiaobo Xu, Shuo Li, Hongyi Jiang, Guoming |
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a flat lithosphere-asthenosphere boundary (∼60 km depth) in central eastern china: implications for lithospheric destruction and evolution |
title_auth |
A flat lithosphere-asthenosphere boundary (∼60 km depth) in central Eastern China: Implications for lithospheric destruction and evolution |
abstract |
Detailed knowledge of the lithospheric thickness is important for understanding the tectonic evolution in central Eastern China, characterized by ore deposits in the Middle-Lower Yangtze Metallogenic Belt (MLYMB). We realize this goal by applying the common conversion point (CCP) stacking to Sp receiver functions (SRF) computed from 234 broadband seismic stations in central Eastern China. Distinct negative signals are identified below the Moho in all the CCP stacking profiles, which we interpret as the S-to-P conversions from the lithosphere-asthenosphere boundary (LAB). The imaged LAB is as shallow as ∼60 km with a standard deviation of ∼5 km in the whole region, in contrast to the typical cratonic lithosphere root down to 200 km depth or more, indicating the widespread lithospheric thinning in the study region. Such a flat LAB indicates that the regional lithosphere has been destructed uniformly, shedding light on its destructive mechanism, which we attribute to lithospheric delamination along a mid-lithospheric discontinuity (MLD). Compared to the MLD (∼80–100 km) observed in the western North China Craton, our observations suggest that the destructed lithosphere probably has been further stretched due to slab rollback and trench retreat. In contrast, lithospheric cooling-induced accretion plays a minor role in the lithospheric evolution after destruction. |
abstractGer |
Detailed knowledge of the lithospheric thickness is important for understanding the tectonic evolution in central Eastern China, characterized by ore deposits in the Middle-Lower Yangtze Metallogenic Belt (MLYMB). We realize this goal by applying the common conversion point (CCP) stacking to Sp receiver functions (SRF) computed from 234 broadband seismic stations in central Eastern China. Distinct negative signals are identified below the Moho in all the CCP stacking profiles, which we interpret as the S-to-P conversions from the lithosphere-asthenosphere boundary (LAB). The imaged LAB is as shallow as ∼60 km with a standard deviation of ∼5 km in the whole region, in contrast to the typical cratonic lithosphere root down to 200 km depth or more, indicating the widespread lithospheric thinning in the study region. Such a flat LAB indicates that the regional lithosphere has been destructed uniformly, shedding light on its destructive mechanism, which we attribute to lithospheric delamination along a mid-lithospheric discontinuity (MLD). Compared to the MLD (∼80–100 km) observed in the western North China Craton, our observations suggest that the destructed lithosphere probably has been further stretched due to slab rollback and trench retreat. In contrast, lithospheric cooling-induced accretion plays a minor role in the lithospheric evolution after destruction. |
abstract_unstemmed |
Detailed knowledge of the lithospheric thickness is important for understanding the tectonic evolution in central Eastern China, characterized by ore deposits in the Middle-Lower Yangtze Metallogenic Belt (MLYMB). We realize this goal by applying the common conversion point (CCP) stacking to Sp receiver functions (SRF) computed from 234 broadband seismic stations in central Eastern China. Distinct negative signals are identified below the Moho in all the CCP stacking profiles, which we interpret as the S-to-P conversions from the lithosphere-asthenosphere boundary (LAB). The imaged LAB is as shallow as ∼60 km with a standard deviation of ∼5 km in the whole region, in contrast to the typical cratonic lithosphere root down to 200 km depth or more, indicating the widespread lithospheric thinning in the study region. Such a flat LAB indicates that the regional lithosphere has been destructed uniformly, shedding light on its destructive mechanism, which we attribute to lithospheric delamination along a mid-lithospheric discontinuity (MLD). Compared to the MLD (∼80–100 km) observed in the western North China Craton, our observations suggest that the destructed lithosphere probably has been further stretched due to slab rollback and trench retreat. In contrast, lithospheric cooling-induced accretion plays a minor role in the lithospheric evolution after destruction. |
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A flat lithosphere-asthenosphere boundary (∼60 km depth) in central Eastern China: Implications for lithospheric destruction and evolution |
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