First Discovery of North-South Striking Normal Faults near the Potential Eastern End of Altyn Tagh Fault

Abstract

The Altyn Tagh fault is the northern boundary of Tibetan Plateau. As one of the most well-known strike-slip fault in the world, great achievements on tectonic deformation and Late Quaternary slip rate have been made. However, there is a long-lasting debate on whether the Altyn Tagh fault extends into the Jinta Basin or even eastward. In this paper, we use satellite image interpretation, field investigation, trench excavation, and optical stimulated luminescence dating to study newly found NS striking scarps in the eastern end of Jinta Nan Shan. The results are as follows: firstly, a group of normal faults develop on terrace T2 of Heihe River, the total length amounts to ∼40 km, total scarp height is 30±5 m; secondly, four paleoseismic events have been interpreted from three trenches, approximate ages of events are 79.97±19.14 ka BP, 62.55±13.10∼55.41±10.77 ka BP, before 16.89±2.08 ka BP, 8.52±1.49 ka BP, respectively; thirdly, just like NS normal faults in the western end of Altyn Tagh fault, the newly found NS extensional faults are likely the terminating tectonics of the eastern end of Altyn Tagh fault, the large Altyn Tagh fault may end in the eastern end of Jinta Nan Shan.

Keywords

Altyn Tagh fault / normal fault / Jinta Nan Shan fault / Heihe River / paleoseismic events

References

Bayasgalan A., Jackson J., Ritz J. F., . Field Examples of Strike-Slip Fault Terminations in Mongolia and Their Tectonic Significance. Tectonics, 1999, 18(3): 394-411.

Bendick R., Bilham R., Freymueller J., . Geodetic Evidence for a Low Slip Rate in the Altyn Tagh Fault System. Nature, 2000, 404(6773): 69-72.

Burchfiel B. C., Deng Q. D., Molnar P., . Intracrustal Detachment within Zones of Continental Deformation. Geology, 1989, 17(8): 448-452.

Chen W. B., Xu X. W. Sinistral Strike-Slip Faults along the Southern Alashan Margin Eastwards Extending of the Altyn Fault. Seismology and Geology, 2006, 28(2): 319-324.

Cowgill E., Gold R. D., Chen X. H., . Low Quaternary Slip Rate Reconciles Geodetic and Geologic Rates along the Altyn Tagh Fault, Northwestern Tibet. Geology, 2009, 37(7): 647-650.

Darby B. J., Ritts B. D., Yue Y., . Did the Altyn Tagh Fault Extend beyond the Tibetan Plateau?. Earth and Planetary Science Letters, 2005, 240(2): 425-435.

Deng Q. D., Zhang W. Q., Zhang P. Z., . Haiyuan Strike-Slip Fault Zone and Its Compressional Structures of the End. Seismology and Geology, 1989, 11(1): 1-14.

Elliott J. R., Biggs J., Parsons B., . InSAR Slip Rate Determination on the Altyn Tagh Fault, Northern Tibet, in the Presence of Topographically Correlated Atmospheric Delays. Geophysical Research Letters, 2008, 35 12 L12309

Furuya M., Yasuda T. The 2008 Yutian Normal Faulting Earthquake (Mw 7.1), NW Tibet: Non-Planar Fault Modeling and Implications for the Karakax Fault. Tectonophysics, 2011, 511(3/4): 125-133.

Galindo-Zaldívar J., Azzouz O., Chalouan A., . Extensional Tectonics, Graben Development and Fault Terminations in the Eastern Rif (Bokoya-Ras Afraou Area). Tectonophysics, 2015, 663: 140-149.

Gold R. D., Cowgill E., Arrowsmith J. R., . Riser Diachroneity, Lateral Erosion, and Uncertainty in Rates of Strike-Slip Faulting: A Case Study from Tuzidun along the Altyn Tagh Fault, NW China. Journal of Geophysical Research, 2009, 114 B4 B04401

Gold R. D., Cowgill E., Arrowsmith J. R., . Faulted Terrace Risers Place New Constraints on the Late Quaternary Slip Rate for the Central Altyn Tagh Fault, Northwest Tibet. Geological Society of America Bulletin, 2011, 123(5/6): 958-978.

Gold R. D., Cowgill E., Wang X. F., . Application of Trishear Fault-Propagation Folding to Active Reverse Faults: Examples from the Dalong Fault, Gansu Province, NW China. Journal of Structural Geology, 2006, 28(2): 200-219.

He W. G., Yuan D. Y., Wang A. G., . Active Faulting Features in Holocene of the West Segment of the Jinta’nanshan North-Margin Fault at the North of Jiuquan Basin. Earthquake, 2012, 32(3): 59-66.

Hetzel R., Tao M. X., Niedermann S., . Implications of the Fault Scaling Law for the Growth of Topography: Mountain Ranges in the Broken Foreland of North-East Tibet. Terra Nova, 2004, 16(3): 157-162.

Jolivet L., Tamaki K., Fournier M. Japan Sea, Opening History and Mechanism: A Synthesis. Journal of Geophysical Research: Solid Earth, 1994, 99(B11): 22237-22259.

Kamata H., Kodama K. Tectonics of an Arc-Arc Junction: An Example from Kyushu Island at the Junction of the Southwest Japan Arc and the Ryukyu Arc. Tectonophysics, 1994, 233(1/2): 69-81.

Lelgemann H., Gutscher M. A., Bialas J., . Transtensional Basins in the Western Sunda Strait. Geophysical Research Letters, 2000, 27(21): 3545-3548.

Li H. B., Pan J. W., Lin A. M., . Coseismic Surface Ruptures Associated with the 2014Mw 6.9 Yutian Earthquake on the Altyn Tagh Fault, Tibetan Plateau. Bulletin of the Seismological Society of America, 2016, 106(2): 595-608.

Li H. B., Pan J. W., Sun Z. M., . Seismogenic Structure and Surface Rupture Characteristics of the 2014 Ms 7.3 Yutian Earthquake. Acta Geologica Sinica, 2015, 89(1): 180-194.

Li Y. H., Cui D. X., Hao M. GPS-Constrained Inversion of Slip Rate on Major Active Faults in the Northeastern Margin of Tibet Plateau. Earth Science—Journal of China University of Geosciences, 2015, 40(10): 1767-1780.

Mériaux A. S., Ryerson F. J., Tapponnier P., . Rapid Slip along the Central Altyn Tagh Fault: Morphochronologic Evidence from Cherchen He and Sulamu Tagh. Journal of Geophysical Research: Solid Earth, 2004, 109 B6 B06401

Mériaux A. S., Tapponnier P., Ryerson F.J., . The Aksay Segment of the Northern Altyn Tagh Fault: Tectonic Geomorphology, Landscape Evolution, and Holocene Slip Rate. Journal of Geophysical Research: Solid Earth, 2005, 110 B4 B04404

Meyer B., Tapponnier P., Bourjot L., . Crustal Thickening in Gansu-Qinghai, Lithospheric Mantle Subduction, and Oblique, Strike-Slip Controlled Growth of the Tibet Plateau. Geophysical Journal International, 1998, 135(1): 1-47.

Molnar P., Tapponnier P. Cenozoic Tectonics of Asia: Effects of a Continental Collision: Features of Recent Continental Tectonics in Asia can be Interpreted as Results of the India-Eurasia Collision. Science, 1975, 189(4201): 419-426.

Mouslopoulou V., Nicol A., Little T. A., . Displacement Transfer between Intersecting Regional Strike-Slip and Extensional Fault Systems. Journal of Structural Geology, 2007, 29(1): 100-116.

Mouslopoulou V., Nicol A., Little T. A., . Terminations of Large Strike-Slip Faults: An Alternative Model from New Zealand. Geological Society, London, Special Publications, 2007, 290(1): 387-415.

Mouslopoulou V., Nicol A., Walsh J. J., . Quaternary Temporal Stability of a Regional Strike-Slip and Rift Fault Intersection. Journal of Structural Geology, 2008, 30(4): 451-463.

Oskin M. E., Arrowsmith J. R., Corona A. H., . Near-Field Deformation from the El Mayor-Cucapah Earthquake Revealed by Differential LIDAR. Science, 2012, 335(6069): 702-705.

Pan J. W., Li H. B., Jerome V. D. W., . The First Quantitative Slip-Rate Estimated along the Ashikule Fault at the Western Segment of the Altyn Tagh Fault System. Acta Geologica Sinica—English Edition, 2015, 89(6): 2088-2089.

Peltzer G., Tapponnier P., Armijo R. Magnitude of Late Quaternary Left-Lateral Displacements along the North Edge of Tibet. Science, 1989, 246(4935): 1285-1289.

Qiu A. M., Li B. X. A Tentative Discussion on the Tail Effect on Northeast Altun Fault Tibet in the Light of Geophysical Field Information. Geophysics & Geochemical Exploration, 2011, 35(2): 149-154.

Ran Y. K., Li Y. B., Du P., . Key Techniques and Several Cases Analysis in Paleoseismic Studies in Mainland China (3): Rupture Characteristics, Environment Impact and Paleoseismic Indicators on Normal Faults. Seismology and Geology, 2014, 36(2): 287-301.

Rao G., Cheng Y. L., Lin A. M., . Relationship between Landslides and Active Normal Faulting in the Epicentral Area of the AD 1556 M∼8.5 Huaxian Earthquake, SE Weihe Graben (Central China). Journal of Earth Science, 2017, 28(3): 545-554.

Ren Z. K., Chen T., Zhang H. P., . LiDAR Survey in Active Tectonics Studies: An Introduction and Overview. Acta Geologica Sinica, 2014, 88(6): 1-12.

Ren Z. K., Zhang Z. Q., Chen T., . Clustering of Offsets on the Haiyuan Fault and their Relationship to Paleoearthquakes. Geological Society of America Bulletin, 2016, 128(1/2): 3-18.

Tan J., Li H. Y., Li X. F., . Radial Anisotropy in the Crust beneath the Northeastern Tibetan Plateau from Ambient Noise Tomography. Journal of Earth Science, 2015, 26(6): 864-871.

Van Dissen R., Yeats R. S. Hope Fault, Jordan Thrust, and Uplift of the Seaward Kaikoura Range, New Zealand. Geology, 1991, 19(4): 393-396.

Wang P. T., Shao Y. X., Zhang H. P., . The Application of SUAV Photogrammetry in Active Tectonics—Shanmagou Site of Haiyuan Fault, for Example. Quaternary Sciences, 2016, 36(2): 433-442.

Wen Z. L., Hu X. F., Pan B. T., . Deformation Analysis of Fluvial Terrace in Jinta’Nanshan Mountains, Gansu Province. Geological Review, 2015, 61(5): 1032-1046.

Working Group on the Active Altyn Tagh Fault Zone, SSB The Altyn Tagh Fault Zone, 1992, 1-360.

Worrall D. M., Kruglyak V., Kunst F., . Tertiary Tectonics of the Sea of Okhotsk, Russia: Far-Field Effects of the India-Eurasia Collision. Tectonics, 1996, 15(4): 813-826.

Xu X. W., Tan X. B., Wu G., . Surface Rupture Features of the 2008 Yutian Ms 7.3 Earthquake and Its Tectonic Nature. Seismology and Geology, 2011, 33(2): 462-471.

Xu X. W., Tan X. B., Yu G. H., . Normal-and Oblique-Slip of the 2008 Yutian Earthquake: Evidence for Eastward Block Motion, Northern Tibetan Plateau. Tectonophysics, 2013, 584: 152-165.

Xu X. W., Tapponnier P., Van Der Woerd J., . Late Quaternary Sinistral Slip Rate along the Altyn Tagh Fault and Its Structural Transformation Model. Science in China Ser. D: Earth Sciences, 2003, 33(10): 967-974.

Xue Y. C., Cao X. Z., Xu L. Q., . Application of Remote Sensing to Fault Study: A Case Study of the Zhangjiakou-Penglai Fault Zone. Chinese Journal of Geology, 2015, 50(2): 564-580.

Yin A., Harrison T. M. Geologic Evolution of the Himalayan-Tibetan Orogen. Annual Review of Earth and Planetary Sciences, 2000, 28(1): 211-280.

Yu J. X., Zheng W. J., Lei Q. Y., . Neotectonics and Kinematics along the Yabrai Range-Front Fault in the South Alax Block and Its Implications for Regional Tectonics. Seismology and Geology, 2013, 35(4): 731-744.

Yue Y. J., Liou J. G. Two-Stage Evolution Model for the Altyn Tagh Fault, China. Geology, 1999, 27(3): 227-230.

Zhang B., He W. G., Pang W., . Geologic and Geomorphic Expressions of Late Quaternary Strike-Slip Activity on Jinta Nanshan Fault in Northern Edge of Qingzang Block. Seismology and Geology, 2016, 38(1): 1-21.

Zhang J., Li J. Y., Li Y. F., . The Cenozoic Deformation of the Alax Block in Central Asia-Question on the Northeastern Extension of the Altyn Tagh Fault in Cenozoic Time. Acta Geologica Sinica, 2007, 81(11): 1481-1496.

Zhang P. Z., Molnar P., Xu X. W. Late Quaternary and Present-Day Rates of Slip along the Altyn Tagh Fault, Northern Margin of the Tibetan Plateau. Tectonics, 2007, 26 5 TC5010

Zheng J. D. Geometry of the Altun Fracture Zone. Regional Geology of China, 1991, 1: 54-59.

Zheng W. J., Zhang H. P., Zhang P. Z., . Late Quaternary Slip Rates of the Thrust Faults in Western Hexi Corridor (Northern Qilian Shan, China) and their Implications for Northeastward Growth of the Tibetan Plateau. Geosphere, 2013, 9(2): 342-354.

Zheng W. J., Zhang P. Z., He W. G., . Transformation of Displacement between Strike-Slip and Crustal Shortening in the Northern Margin of the Tibetan Plateau: Evidence from Decadal GPS Measurements and Late Quaternary Slip Rates on Faults. Tectonophysics, 2013, 584: 267-280.

Zheng W. J., Zhang P. Z., Ge W. P., . Late Quaternary Slip Rate of the South Heli Shan Fault (northern Hexi Corridor, NW China) and Its Implications for Northeastward Growth of the Tibetan Plateau. Tectonics, 2013, 32(2): 271-293.

Zielke O., Arrowsmith J. R., Ludwig L. G., . Slip in the 1857 and Earlier Large Earthquakes along the Carrizo Plain, San Andreas Fault. Science, 2010, 327(5969): 1119-1122.