Formation of the Tibetan Plateau during the India-Eurasia Convergence: Insight from 3-D Multi-Terrane Thermomechanical Modeling

Abstract

Various models exist to explain the formation of the Tibetan Plateau, including “tectonic escape”, “pure shear thickening”, “convective removal of the lithospheric mantle”, and “lower crustal flow” model. The first two models are primarily constructed on pure mechanical models but are unable to reasonably explain the tension and shear phenomena inside the plateau. The latter two are rheological dynamic models based on deep geophysical observations. However, the spatial range of the lower crustal flow and its role in the plateau formation/uplift remain controversial. Five multi-terrane viscoplastic thermomechanical models were constructed to simulate the uplift and lithospheric structure change of the Tibetan Plateau during the post-collision stage (since 35 Ma) under the convergence of the Indian Plate. Results show that the plateau’s formation begins with crustal thickening, blocked by strong terranes at the northern plateau, and expanded laterally to the east. The lithosphere thickens gradually and experiences delamination at its base, elevating temperature within the crust and forming partial melting layers in the central plateau. As convergence persists on the southern side, the northern plateau’s lithosphere bends downward and undergoes delamination, further heating the crust and promoting the northward and eastward flow of partial melting layers, leading to secondary uplift around the plateau.

Keywords

3-D thermomechanical modeling / Tibetan Plateau / plateau uplift / crustal flow

References

[1] Bai D H, Unsworth M J, Meju M A, et al.. Crustal Deformation of the Eastern Tibetan Plateau Revealed by Magnetotelluric Imaging. Nature Geoscience, 2010, 3(5): 358-362,

[2] Bao X W, Sun X X, Xu M J, et al.. Two Crustal Low-Velocity Channels beneath SE Tibet Revealed by Joint Inversion of Rayleigh Wave Dispersion and Receiver Functions. Earth and Planetary Science Letters, 2015, 415: 16-24,

[3] Beaumont C, Jamieson R A, Nguyen M H, et al.. Himalayan Tectonics Explained by Extrusion of a Low-Viscosity Crustal Channel Coupled to Focused Surface Denudation. Nature, 2001, 414(6865): 738-742,

[4] Beaumont C, Jamieson R A, Nguyen M H, et al.. Crustal Channel Flows: 1. Numerical Models with Applications to the Tectonics of the Himalayan-Tibetan Orogen. Journal of Geophysical Research: Solid Earth, 2004, 109(B6): B06406,

[5] Bian S, Gong J F, Chen L, et al.. Diachronous Uplift in Intra-Continental Orogeny: 2D Thermo-Mechanical Modeling of the India-Asia Collision. Tectonophysics, 2020, 775: 228310,

[6] Bischoff S H, Flesch L M. Normal Faulting and Viscous Buckling in the Tibetan Plateau Induced by a Weak Lower Crust. Nature Communications, 2018, 9: 4952,

[7] Bischoff S H, Flesch L M. Impact of Lithospheric Strength Distribution on India-Eurasia Deformation from 3-D Geodynamic Models. Journal of Geophysical Research: Solid Earth, 2019, 124(1): 1084-1105,

[8] Bittner D, Schmeling H. Numerical Modelling of Melting Processes and Induced Diapirism in the Lower Crust. Geophysical Journal International, 1995, 123(1): 59-70,

[9] Burchfiel B C, Royden L H, van der Hilst R D, et al.. A Geological and Geophysical Context for the Wenchuan Earthquake of 12 May 2008, Sichuan, People’s Republic of China. GSA Today, 2008, 18(7): 4-11,

[10] Burg J P, Gerya T V. The Role of Viscous Heating in Barrovian Metamorphism of Collisional Orogens: Thermomechanical Models and Application to the Lepontine Dome in the Central Alps. Journal of Metamorphic Geology, 2005, 23(2): 75-95,

[11] Chen L, Capitanio F A, Liu L, et al.. Crustal Rheology Controls on the Tibetan Plateau Formation during India-Asia Convergence. Nature Communications, 2017, 8: 15992,

[12] Chen L, Gerya T V. The Role of Lateral Lithospheric Strength Heterogeneities in Orogenic Plateau Growth: Insights from 3-D Thermo-Mechanical Modeling. Journal of Geophysical Research: Solid Earth, 2016, 121(4): 3118-3138,

[13] Chen L, Gerya T V, Zhang Z J, et al.. Formation Mechanism of Steep Convergent Intracontinental Margins: Insights from Numerical Modeling. Geophysical Research Letters, 2013, 40(10): 2000-2005,

[14] Chen L, Liu L J, Capitanio F A, et al.. The Role of Pre-Existing Weak Zones in the Formation of the Himalaya and Tibetan Plateau: 3-D Thermomechanical Modelling. Geophysical Journal International, 2020, 221: 1971-1983,

[15] Chen L, Song X D, Gerya T V, et al.. Crustal Melting beneath Orogenic Plateaus: Insights from 3-D Thermo-Mechanical Modeling. Tectonophysics, 2019, 761: 1-15,

[16] Chen M, Niu F L, Tromp J, et al.. Lithospheric Foundering and Underthrusting Imaged beneath Tibet. Nature Communications, 2017, 8: 15659,

[17] Chen M, Sun M, Buslov M M, et al.. Crustal Melting and Magma Mixing in a Continental Arc Setting: Evidence from the Yaloman Intrusive Complex in the Gorny Altai Terrane, Central Asian Orogenic Belt. Lithos, 2016, 252/253: 76-91,

[18] Chung S L, Chu M F, Zhang Y Q, et al.. Tibetan Tectonic Evolution Inferred from Spatial and Temporal Variations in Post-Collisional Magmatism. Earth-Science Reviews, 2005, 68(3/4): 173-196,

[19] Clark M K, Bush J W M, Royden L H. Dynamic Topography Produced by Lower Crustal Flow Against Rheological Strength Heterogeneities Bordering the Tibetan Plateau. Geophysical Journal International, 2005, 162(2): 575-590,

[20] Clark M K, Royden L H. Topographic Ooze: Building the Eastern Margin of Tibet by Lower Crustal Flow. Geology, 2000, 28(8): 703,

[21] Clauser C, Huenges E. Thermal Conductivity of Rocks and Minerals. AGU Reference Shelf, 1995 Washington, D. C. American Geophysical Union 105-126

[22] Cook K L, Royden L H. The Role of Crustal Strength Variations in Shaping Orogenic Plateaus, with Application to Tibet. Journal of Geophysical Research: Solid Earth, 2008, 113(B8): B08407,

[23] Cui Q H, Li Z H. Along-Strike Variation of Convergence Rate and Pre-Existing Weakness Contribute to Indian Slab Tearing beneath Tibetan Plateau. Geophysical Research Letters, 2022, 49(4): e2022GL098019,

[24] Cui Q H, Li Z H, Liu M. Crustal Thickening Versus Lateral Extrusion during India-Asia Continental Collision: 3-D Thermo-Mechanical Modeling. Tectonophysics, 2021, 818: 229081,

[25] Ding L, Kapp P, Cai F L, et al.. Timing and Mechanisms of Tibetan Plateau Uplift. Nature Reviews Earth & Environment, 2022, 3(10): 652-667,

[26] Ding L, Kapp P, Zhong D L, et al.. Cenozoic Volcanism in Tibet: Evidence for a Transition from Oceanic to Continental Subduction. Journal of Petrology, 2003, 44(10): 1833-1865,

[27] Elliott T, Plank T, Zindler A, et al.. Element Transport from Slab to Volcanic Front at the Mariana Arc. Journal of Geophysical Research: Solid Earth, 1997, 102(B7): 14991-15019,

[28] England P, Houseman G. Finite Strain Calculations of Continental Deformation: 2. Comparison with the India-Asia Collision Zone. Journal of Geophysical Research: Solid Earth, 1986, 91(B3): 3664-3676,

[29] Feng M, Qian H, Mechie J, et al.. Crustal Seismogenic Structures and Deformation Styles along the Longmen Shan Fault Belt in the Eastern Tibetan Plateau Inferred from Ambient Noise Tomography. Tectonophysics, 2021, 798: 228689,

[30] Feng S Y, Zhang P Z, Liu B J, et al.. Deep Crustal Deformation of the Longmen Shan, Eastern Margin of the Tibetan Plateau, from Seismic Reflection and Finite Element Modeling. Journal of Geophysical Research: Solid Earth, 2016, 121(2): 767-787,

[31] Flesch L, Bendick R, Bischoff S. Limitations on Inferring 3D Architecture and Dynamics from Surface Velocities in the India-Eurasia Collision Zone. Geophysical Research Letters, 2018, 45(3): 1379-1386,

[32] Gerya T V. . Introduction to Numerical Geodynamic Modelling, 2019 Cambridge Cambridge University Press,

[33] Gerya T V, Meilick F I. Geodynamic Regimes of Subduction under an Active Margin: Effects of Rheological Weakening by Fluids and Melts. Journal of Metamorphic Geology, 2011, 29(1): 7-31,

[34] Guillot S, Garzanti E, Baratoux D, et al.. Reconstructing the Total Shortening History of the NW Himalaya. Geochemistry, Geophysics, Geosystems, 2003, 4(7): 1064,

[35] Guo B A, Chen J H, Liu Q Y, et al.. Crustal Structure beneath the Qilian Orogen Zone from Multiscale Seismic Tomography. Earth and Planetary Physics, 2019, 3(3): 232-242,

[36] Harrison T M, Copeland P, Kidd W S F, et al.. Activation of the Nyainqentanghla Shear Zone: Implications for Uplift of the Southern Tibetan Plateau. Tectonics, 1995, 14(3): 658-676,

[37] Hawkesworth C J, Turner S P, McDermott F, et al.. U-Th Isotopes in Arc Magmas: Implications for Element Transfer from the Subducted Crust. Science, 1997, 276(5312): 551-555,

[38] Hess P C. . Origin of Igneous Rocks, 1989 London Harvard University Press

[39] Hirschmann M M. Mantle Solidus: Experimental Constraints and the Effects of Peridotite Composition. Geochemistry, Geophysics, Geosystems, 2000, 1(10): 1042,

[40] Hubbard J, Shaw J H. Uplift of the Longmen Shan and Tibetan Plateau, and the 2008 Wenchuan (M = 7.9) Earthquake. Nature, 2009, 458(7235): 194-197,

[41] Jamieson R A, Beaumont C. On the Origin of Orogens. Geological Society of America Bulletin, 2013, 125(11/12): 1671-1702,

[42] Jamieson R A, Beaumont C, Medvedev S, et al.. Crustal Channel Flows: 2. Numerical Models with Implications for Metamorphism in the Himalayan-Tibetan Orogen. Journal of Geophysical Research: Solid Earth, 2004, 109(B6): B06407,

[43] Ji S C, Zhao P L. Flow Laws of Multiphase Rocks Calculated from Experimental Data on the Constituent Phases. Earth and Planetary Science Letters, 1993, 117(1/2): 181-187,

[44] Johannes W. Ashworth J R. The Significance of Experimental Studies for the Formation of Migmatites. Migmatites, 1985 Boston, MA Springer 36-85,

[45] Katz R F, Spiegelman M, Langmuir C H. A New Parameterization of Hydrous Mantle Melting. Geochemistry, Geophysics, Geosystems, 2003, 4(9): 1073,

[46] Kirby S H. Rheology of the Lithosphere. Reviews of Geophysics, 1983, 21(6): 1458-1487,

[47] Kirby S H, Kronenberg A K. Rheology of the Lithosphere: Selected Topics. Reviews of Geophysics, 1987, 25(6): 1219-1244,

[48] Klemperer S L. Crustal Flow in Tibet: Geophysical Evidence for the Physical State of Tibetan Lithosphere, and Inferred Patterns of Active Flow. Geological Society, London, Special Publications, 2006, 268(1): 39-70,

[49] Kong F S, Wu J, Liu K H, et al.. Crustal Anisotropy and Ductile Flow beneath the Eastern Tibetan Plateau and Adjacent Areas. Earth and Planetary Science Letters, 2016, 442: 72-79,

[50] Lease R O, Burbank D W, Zhang H P, et al.. Cenozoic Shortening Budget for the Northeastern Edge of the Tibetan Plateau: Is Lower Crustal Flow Necessary?. Tectonics, 2012, 31(3): TC3011,

[51] Li C, van der Hilst R D. Structure of the Upper Mantle and Transition Zone beneath Southeast Asia from Traveltime Tomography. Journal of Geophysical Research: Solid Earth, 2010, 115(B7): B07308,

[52] Li X, Ma X B, Chen Y, et al.. A Plume-Modified Lithospheric Barrier to the Southeastward Flow of Partially Molten Tibetan Crust Inferred from Magnetotelluric Data. Earth and Planetary Science Letters, 2020, 548: 116493,

[53] Li Y H, Wang X C, Zhang R Q, et al.. Crustal Structure across the NE Tibetan Plateau and Ordos Block from the Joint Inversion of Receiver Functions and Rayleigh-Wave Dispersions. Tectonophysics, 2017, 705: 33-41,

[54] Li Z H, Liu M Q, Gerya T. Material Transportation and Fluid-Melt Activity in the Subduction Channel: Numerical Modeling. Science China Earth Sciences, 2015, 58(8): 1251-1268,

[55] Li Z H, Xu Z Q, Gerya T, et al.. Collision of Continental Corner from 3-D Numerical Modeling. Earth and Planetary Science Letters, 2013, 380: 98-111,

[56] Liang X F, Chen Y, Tian X B, et al.. 3D Imaging of Subducting and Fragmenting Indian Continental Lithosphere beneath Southern and Central Tibet Using Body-Wave Finite-Frequency Tomography. Earth and Planetary Science Letters, 2016, 443: 162-175,

[57] Liu C, Zhu B J, Yang X L. Crustal Rheological Strength Heterogeneities Control the Formation of Continental Plateau Margins. Journal of Asian Earth Sciences, 2015, 107: 62-71,

[58] Molnar P, England P, Martinod J. Mantle Dynamics, Uplift of the Tibetan Plateau, and the Indian Monsoon. Reviews of Geophysics, 1993, 31(4): 357-396,

[59] Penney C, Copley A. Lateral Variations in Lower Crustal Strength Control the Temporal Evolution of Mountain Ranges: Examples from South-East Tibet. Geochemistry, Geophysics, Geosystems, 2021, 22(2): e2020GC009092,

[60] Poli S, Schmidt M W. Petrology of Subducted Slabs. Annual Review of Earth and Planetary Sciences, 2002, 30: 207-235,

[61] Ranalli G. . Rheology of the Earth, 1995 London Springer Science & Business Media

[62] Ranalli G, Murphy D C. Rheological Stratification of the Lithosphere. Tectonophysics, 1987, 132(4): 281-295,

[63] Rey P F, Teyssier C, Whitney D L. Limit of Channel Flow in Orogenic Plateaux. Lithosphere, 2010, 2(5): 328-332,

[64] Royden L H, Burchfiel B C, King R W, et al.. Surface Deformation and Lower Crustal Flow in Eastern Tibet. Science, 1997, 276(5313): 788-790,

[65] Royden L H, Burchfiel B C, van der Hilst R D. The Geological Evolution of the Tibetan Plateau. Science, 2008, 321(5892): 1054-1058,

[66] Schmeling H, Babeyko A Y, Enns A, et al.. A Benchmark Comparison of Spontaneous Subduction Models—Towards a Free Surface. Physics of the Earth and Planetary Interiors, 2008, 171(1/2/3/4): 198-223,

[67] Schmidt M W, Poli S. Experimentally Based Water Budgets for Dehydrating Slabs and Consequences for Arc Magma Generation. Earth and Planetary Science Letters, 1998, 163(1/2/3/4): 361-379,

[68] Shao C G, Yan Z K, Li Y, et al.. Dynamic Mechanism of Formation of Basin-Mountain System in Southern Segment of Longmenshan and Frontal Area in Late Miocene. Earth Science, 2023, 48(4): 1379-1388 (in Chinese with English Abstract)

[69] Sternai P, Avouac J P, Jolivet L, et al.. On the Influence of the Asthenospheric Flow on the Tectonics and Topography at a Collision-Subduction Transition Zones: Comparison with the Eastern Tibetan Margin. Journal of Geodynamics, 2016, 100: 184-197,

[70] Sternai P, Jolivet L, Menant A, et al.. Driving the Upper Plate Surface Deformation by Slab Rollback and Mantle Flow. Earth and Planetary Science Letters, 2014, 405: 110-118,

[71] Tapponnier P, Peltzer G, Le Dain A Y, et al.. Propagating Extrusion Tectonics in Asia: New Insights from Simple Experiments with Plasticine. Geology, 1982, 10(12): 611,

[72] Tapponnier P, Xu Z Q, Roger F, et al.. Oblique Stepwise Rise and Growth of the Tibet Plateau. Science, 2001, 294(5547): 1671-1677,

[73] Tian Y T, Kohn B P, Gleadow A J W, et al.. Constructing the Longmen Shan Eastern Tibetan Plateau Margin: Insights from Low-Temperature Thermochronology. Tectonics, 2013, 32(3): 576-592,

[74] Turcotte D L, Schubert G. . Geodynamics, 2002 Cambridge Cambridge University Press,

[75] Wang C S, Dai J G, Zhao X X, et al.. Outward-Growth of the Tibetan Plateau during the Cenozoic: A Review. Tectonophysics, 2014, 621: 1-43,

[76] Wang C S, Zhao X X, Liu Z F, et al.. Constraints on the Early Uplift History of the Tibetan Plateau. Proceedings of the National Academy of Sciences of the United States of America, 2008, 105(13): 4987-4992,

[77] Wang C Y, Sandvol E, Zhu L, et al.. Lateral Variation of Crustal Structure in the Ordos Block and Surrounding Regions, North China, and Its Tectonic Implications. Earth and Planetary Science Letters, 2014, 387: 198-211,

[78] Wang C Y, Zhu L P, Lou H, et al.. Crustal Thicknesses and Poisson’s Ratios in the Eastern Tibetan Plateau and Their Tectonic Implications. Journal of Geophysical Research, 2010, 115(B11): B11301,

[79] Wang E, Kirby E, Furlong K P, et al.. Two-Phase Growth of High Topography in Eastern Tibet during the Cenozoic. Nature Geoscience, 2012, 5(9): 640-645,

[80] Wang M, Shen Z K. Present-Day Crustal Deformation of Continental China Derived from GPS and Its Tectonic Implications. Journal of Geophysical Research: Solid Earth, 2020, 125(2): e2019JB018774,

[81] Wang Q A, Hawkesworth C J, Wyman D, et al.. Pliocene-Quaternary Crustal Melting in Central and Northern Tibet and Insights into Crustal Flow. Nature Communications, 2016, 7: 11888,

[82] Wang W T, Zhang P Z, Garzione C N, et al.. Pulsed Rise and Growth of the Tibetan Plateau to Its Northern Margin since Ca. 30 Ma. Proceedings of the National Academy of Sciences of the United States of America, 2022, 119(8): e2120364119,

[83] Wang X B, Zhang G, Fang H, et al.. Crust and Upper Mantle Resistivity Structure at Middle Section of Longmenshan, Eastern Tibetan Plateau. Tectonophysics, 2014, 619/620: 143-148,

[84] Williams H M, Turner S P, Pearce J A, et al.. Nature of the Source Regions for Post-Collisional, Potassic Magmatism in Southern and Northern Tibet from Geochemical Variations and Inverse Trace Element Modelling. Journal of Petrology, 2004, 45(3): 555-607,

[85] Wu C L, Tian X B, Xu T, et al.. Deformation of Crust and Upper Mantle in Central Tibet Caused by the Northward Subduction and Slab Tearing of the Indian Lithosphere: New Evidence Based on Shear Wave Splitting Measurements. Earth and Planetary Science Letters, 2019, 514: 75-83,

[86] Yakovlev P V, Saal A, Clark M K, et al.. The Geochemistry of Tibetan Lavas: Spatial and Temporal Relationships, Tectonic Links and Geodynamic Implications. Earth and Planetary Science Letters, 2019, 520: 115-126,

[87] Yang Y J, Ritzwoller M H, Zheng Y, et al.. A Synoptic View of the Distribution and Connectivity of the Mid-Crustal Low Velocity Zone beneath Tibet. Journal of Geophysical Research: Solid Earth, 2012, 117(B4): B04303,

[88] Yang Y Q, Liu M. Crustal Thickening and Lateral Extrusion during the Indo-Asian Collision: A 3D Viscous Flow Model. Tectonophysics, 2009, 465(1/2/3/4): 128-135,

[89] Yang Y Q, Liu M. The Indo-Asian Continental Collision: A 3-D Viscous Model. Tectonophysics, 2013, 606: 198-211,

[90] Zhang P Z. A Review on Active Tectonics and Deep Crustal Processes of the Western Sichuan Region, Eastern Margin of the Tibetan Plateau. Tectonophysics, 2013, 584: 7-22,

[91] Zhang P Z, Wang W T, Gan W J, et al.. Present-Day Deformation and Geodynamic Processes of the Tibetan Plateau. Acta Geologica Sinica, 2022, 96(10): 3297-3313 (in Chinese with English Abstract)

[92] Zhu D C, Zhao Z D, Niu Y L, et al.. The Origin and Pre-Cenozoic Evolution of the Tibetan Plateau. Gondwana Research, 2013, 23(4): 1429-1454,