Interaction between turbidity currents and a contour current – A rare example from the Ordovician of Shaanxi province, China

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The silty top parts of graded turbidites of the Late Ordovician Pingliang Formation, which accumulated along the southern margin of the Ordos Basin (central China), have been reworked by contour currents. The reworking of the turbidites can be proven on the basis of paleocurrent directions in individual layers: the ripple-cross-bedded sandy divisions of some turbidites show transport directions consistently into the downslope direction (consistent with the direction of other gravity flows), but in the upper, silty fine-grained division they show another direction, viz. alongslope (consistent with the direction that a contour current must have taken at the same time). Both directions are roughly perpendicular to each other. Moreover, the sediment of the reworked turbidites is better sorted and has better rounded grains than the non-reworked turbidites.

Although such type of reworking is well known from modern deep-sea environments, this has rarely been found before in ancient deep-sea deposits. The reworking could take place because the upper divisions of the turbidites involved are silty and consequently relatively easily erodible, while the contour current had locally a relatively high velocity – and consequently a relatively large erosional capability – because of confinement within a relatively narrow trough.

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  • Bouma A.H. 1962. Sedimentology of some flysch deposits. A graphic approach to facies interpretation. Elsevier Amsterdam 168 pp.

  • Duan T.Z. Gao Z.Z. Zeng Y.F. & Stow D.A.V. 1993. A fossil carbonate contourite drift on the Lower Ordovician palaeocontinental margin of the middle Yangtze Terrane Jiuxi northern Hunan southern China. Sedimentary Geology 82 271–284.

  • Fang G.Q. & Mao M.J. 2007. Trace fossils and sedimentary environments of Upper Ordovician of Fuping in Shaanxi China. Journal of Tongji University (Natural Science) 35 1118–1121 (in Chinese with English abstract).

  • Gao Z.Z. Kenneth A.E. He Y.B. & Luo S.S. 1998. Deep-water tractive current deposits – The study of internal-tide internal-wave and contour current deposits. Science Press Beijing and New York 77–113.

  • Gao Z.Z. Luo S.S. He Y.B. Zhang J.S. & Tang Z.J. 1995. The Middle Ordovician contourite on the west margin of Ordos. Acta Sedimentologica Sinica 13 16–26 (in Chinese with English abstract).

  • Gong C.L. Wang Y.M. Rebesco M. Salon S. & Steel R.J. 2018. How do turbidity flows interact with contour currents in unidirectionally migrating deep-water channels? Geology 46 551–554.

  • Gong C.L. Wang Y.M. Zhu W.L. Li W.G. & Xu Q. 2013. Upper Miocene to Quaternary unidirectionally migrating deep-water channels in the Pearl River Mouth Basin northern South China Sea. AAPG Bulletin 97 285–308.

  • Gong C.L. Wang Y.M. Xu S. Pickering K.T. Peng X.C. Li W.G. & Qiu Y. 2015. The northeastern South China Sea margin created by the combined action of down-slope and along-slope processes: Processes products and implications for exploration and paleoceanography. Marine and Petroleum Geology 64 233–249.

  • Gong C.L. Wang Y.M. Zheng R.C. Hernández-Molina F.J. Li Y. Stow D.A.V. Xu Q. & Brackenridge R.E. 2016. Middle Miocene reworked turbidites in the Baiyun Sag of the Pearl River Mouth Basin northern South China Sea margin: Processes genesis and implications. Journal of Asian Earth Sciences 128 16–129.

  • Gonthier E. Faugères J.-C. Viana A. Figueiredo A. & Anschutz P. 2003. Upper Quaternary deposits on the Sao Tomé deep-sea channel levee system (South Brazilian Basin): major turbidite versus contourite processes. Marine Geology 199 159–180.

  • Guo Y.R. Zhao Z.Y. Xu W.L. Shi X.Y. Gao J.R. Bao H.P. Liu J.B. Zhang Y.L. & Zhang Y.Q. 2014. Sequence stratigraphy of the Ordovician system in the Ordos Basin. Acta Sedimentologica Sinica 32 44–60 (in Chinese with English abstract).

  • He Y.B. Gao Z.Z. Luo S.S. Peng D.T. Wang H.W. & Luo J.X. 2007. Discovery of internal-tide deposits from the Third Member of Pingliang Formation in Longxian area Shananxi province. Journal of Oil and Gas Technology 29(4) 28–33 (in Chinese with English abstract).

  • Heezen B.C. Hollister C.D. & Ruddiman W.F. 1966. Shaping of the continental rise by deep geostrophic contour currents. Science 152 502–506.

  • Hernández-Molina F.J. & Stow D.A.V. 2008. Continental slope contourites. [In:] Rebesco M. & Camerlenghi A. (Eds): Contourites. Developments in Sedimentology (Elsevier Amsterdam) 60 379–408.

  • Hernández-Molina F.J. Paterlini M. Violante R. Marshall P. Isasi M. Somoza L. & Rebesco M. 2009. Contourite depositional system on the Argentine Slope: An exceptional record of the influence of Antarctic water masses. Geology 37 507–510.

  • Hernández-Molina F.J. Sierro F.J. Llave E. Roque C. Stow D.A.V. Williams T. Lofi J. Schee M.V.D. Arnáiz A. Ledesma S. Rosales C. & Rodríguez-Tovar F.J. 2015. Evolution of the Gulf of Cadiz margin and southwest Portugal contourite depositional system: Tectonic sedimentary and paleoceanographic implications from IODP expedition 339. Marine Geology 377 7–39.

  • Kähler G. & Stow D.A.V. 1998. Turbidites and contourites of the Palaeogene Lefkara Formation southern Cyprus. Sedimentary Geology 115 215–231.

  • Kenyon N.H. Akhmetzhanov A.M. & Twichell D.C. 2002. Sand wave fields beneath the Loop Current Gulf of Mexico: Reworking of fan sands. Marine Geology 192 297–307.

  • Kuvaas B. Kristoffersen Y. Guseva J. Leitchenkov G. Gandjukhin V. Løvås O. Sand M. & Brekke H. 2005. Interplay of turbidite and contourite deposition along the Cosmonaut Sea/Enderby Land margin East Antarctica. Marine Geology 217 143–159.

  • Li H. He Y.B. Huang W. Liu Z.R. Z. & Zhang J. 2016. Contourites of the Ordovician Pingliang Formation in southern margin of Ordos Basin. Journal of Palaeogeography 18 631–642 (in Chinese with English abstract).

  • Li H. He Y.B. Liu Z.R. Huang Z. Zhang J. & Zhang C. 2017. Characteristic of gravity flow deposit in Pingliang Formation of Ordovician the southwest margin of the Ordos Basin. China Science Paper 12 1774–1779 (in Chinese with English abstract).

  • Li H. Wang Y.M. Xu Q. Zhuo H.T. Wu J.P. Tang W. Li D.& Xu Y.X. 2014. Interactions between down-slope and along-slope processes on the northern slope of South China Sea: Products processes and depositional model. Acta Geologica Sinica 88 1120–1129 (in Chinese with English abstract).

  • Li H. Wang Y.M. Zhu W.L. Xu Q. He Y.B. Tang W. Zhuo H.T. Wang D. Wu J.P. & Li D. 2013. Seismic characteristics and processes of the Plio-Quaternary unidirectionally migrating channels and contourites in the northern slope of the South China Sea. Marine and Petroleum Geology 43 370–380.

  • Li W.H. Mei Z.C. Chen W.T. Lu H.Y. Zhang G.Y. & Liu H.Q. 1991. The paleoslope and paleoflow direction of deposits in the Middle–Late Ordovician in Fuping county Shaanxi province. Journal of Xi’an College of Geology 13 36–41 (in Chinese with English abstract).

  • Liu C. Qin S. Su W.B. & Fu L.P. 2013. Microfacies response to the drowning process of the carbonate platform: A case study on the Ordovician succession at the Taoqupo Section Tongchuan city Shaanxi province north China Block. Geological Survey and Research 36 23–38 (in Chinese with English abstract).

  • Marchès E. Mulder T. Gonthier E. Cremer M. Hanquiez V. Garlan T. & Lecroart P. 2010. Perched lobe formation in the Gulf of Cadiz: Interactions between gravity processes and contour currents (Algarve Margin southern Portugal). Sedimentary Geology 229 81–90.

  • Massé L. Faugères J.-C. & Hrovatin V. 1998. The interplay between turbidity and contour current processes on the Columbia Channel fan drift Southern Brazil Basin. Sedimentary Geology 115 111–132.

  • Michels K. Rogenhagen J. & Kuhn G. 2001. Recognition of contour-current influence in mixed contourite-turbidite sequences of the western Weddell Sea Antarctica. Marine Geophysical Researches 22 465–485.

  • Middleton G.V. & Hampton M.A. 1973. Sediment gravity flows: Mechanics of flow and deposition. [In:] Middleton G.V. & Bouma A.H. (Eds): Turbidites and deep water sediments. SEPM Pacific Section Short Course 1–38.

  • Mulder T. Faugères J.-C. & Gonthier E. 2008. Mixed turbidite-contourite systems. [In:] Rebesco M. & Camerlenghi A. (Eds): Contourites. Developments in Sedimentology (Elsevier Amsterdam) 60 435–456.

  • Mulder T. Migeon S. Savoye B. & Faugères J. C. 2001. Inversely graded turbidite sequences in the deep Mediterranean: a record of deposits from flood-generated turbidity currents? Geo-Marine Letters 21 86–93.

  • Mulder T. Lecroart P. Hanquiez V. Marches E. Gonthier E. Guedes J.-C. Thiébot E. Jaaidi B. Kenyon N. Voisset M. Perez C. Sayago M. Fuchey Y. & Bujan S. 2006. The western part of the Gulf of Cadiz: contour currents and turbidity currents interactions. Geo-Marine Letters 26 31–41.

  • Mutti E. Bernoulli D. Ricci F. & Tinterri R. 2009. Turbidites and turbidity currents from Alpin ‘flysch’ to the exploration of continental margins. Sedimentology 56 267–318.

  • Qu H.J. Mei Z.C. Li W.H. Guan L.Q. Feng Y.W. & Fan Y.H. 2010. The characteristics of Middle Ordovician contour current deposits and geological implication in Fuping region Shaanxi Province China. Geological Bulletin of China 29 1304–1309 (in Chinese with English abstract).

  • Rasmussen S. Lykke-Andersen H. Kuijpers A. & Troelstra S.R. 2003. Post-Miocene sedimentation at the continental rise of Southeast Greenland: the interplay between turbidity and contour currents. Marine Geology 196 37–52.

  • Rebesco M Camerlenghi A. & Van Loon A.J. 2008. Contourite research: a field in full development. [In:] Rebesco M. Camerlenghi A. (Eds): Contourites. Developments in Sedimentology (Elsevier Amsterdam) 60 3–8.

  • Rebesco M. Hernández–Molina F. J. Rooij D.V. & Wåhlin A. 2014. Contourites and associated sediments controlled by deep-water circulation processes: State-of-the-art and future considerations. Marine Geology 352 111–154.

  • Rooij D.V. Iglesias J. Hernández-Molina F.J. Ercilla F. Gomez-Ballesteros M. Casas D. Llave E. Hauwere A.D. Garcia-Gil S. Acosta J. & Henriet J.-P. 2010. The Le Danois contourite depositional system: Interactions between the Mediterranean outflow water and the upper Cantabrian slope. Marine Geology 274 1–20.

  • Salles T. Marchès E. Griffiths C. Hanquiez V. & Mulder T. 2010. Simulation of the interactions between gravity processes and contour currents on the Algarve Margin (South Portugal) using the stratigraphic forward model. Sedimentary Geology 229 95–109.

  • Shanmugam G. Spalding T.D. & Rofheart D.H. 1993a. Process sedimentology and reservoir quality of deep marine bottom-current reworked sands (sandy contourites): An example from the Gulf of Mexico. AAPG Bulletin 77 1241–1259.

  • Shanmugam G. Spalding T.D. & Rofheart D.H. 1993b. Traction structures in deep-marine bottom-current-reworded sands in the Pliocene and Pleistocene Gulf of Mexico. Geology 21 929–932.

  • Song S.G. Niu Y.L. Su L. & Xia X.H. 2013. Tectonics of the North Qilian Orogen NW China. Gondwana Research 23 1378–1401.

  • Stanley D.J. 1993. Model for turbidite-to-contourite continuum and multiple process transport in deep marine settings: examples in the rock record. Sedimentary Geology 82 241–255.

  • Stow D.A.V. & Faugères J.-C. 2008. Contourite facies and the facies model. [In:] Rebesco M. Camerlenghi A. (Eds): Contourites. Developments in Sedimentology (Elsevier Amsterdam) 60 223–256.

  • Stow D.A.V. & Lovell J.P.B. 1979. Contourites: Their recognition in modern and ancient sediments. Earth-Science Reviews 14 251–291.

  • Stow D.A.V. Gisell K. & Mike R. 2002. Fossil contourites: type example from an Oligocene palaeoslope system Cyprus. [In:] Stow D.A.V. Pudsey C.J. Howe J.A. Faugères J.-C. & Viana A.R. (Eds): Deep-water contourite systems: modern drifts and ancient series seismic and sedimentary characteristics. Geological Society (London) Memoir 443–455.

  • Stow D.A.V. Faugères J.-C. Viana A. & Gonthier E. 1998. Fossil contourites: a critical review. Sedimentary Geology 115 3–31.

  • Stow D.A.V. Hernández-Molina F.J. Llave E. Sayago-Gil M. Río V.D. & Branson A. 2009. Bedform-velocity matrix: The estimation of bottom current velocity from bedform observation. Geology 37 327–330.

  • Viana A.R. 2008. Economic relevance of contourites. [In:] Rebesco M. Camerlenghi A (Eds.): Contourites. Developments in Sedimentology (Elsevier Amsterdam) 60 493–510.

  • Viana A. de Almeida W. & de Almeida C.W. 2002. Upper slope sands: late Quaternary shallow-water sandy contourites of the Campos basin SW Atlantic margin. Geological Society London Memoir 22 261–270.

  • Wang Z.T. Zhou H.R. Wang X.L. Zhang Y.S. Jing X.C. & Xing E.Y. 2015. Ordovician geological events group in the west and south Ordos Basin. Acta Geologica Sinica 89 1990–2004 (in Chinese with English abstract).

  • Wetzel A. & Stow D.A.V. 2008. Bioturbation and biogenic sedimentary structure in contourites. [In:] Rebesco M. Camerlenghi A. (Eds): Contourites. Developments in Sedimentology (Elsevier Amsterdam) 60 183–202.

  • Wu S.H. & Feng Z.Z. 1994. Sedimentology of gravity flow deposits of Middle Ordovician Pingliang Formation in west and south margins of Ordos. Oil & Gas Geology 15 226–234 (in Chinese with English abstract).

  • Xi S.L. Li Z.H. Wang X. & Zheng C.B. 2006. Distribution and exploration potential of Ordovician reservoir in Ordos Basin. Oil & Gas Geology 27 405–412 (in Chinese with English abstract).

  • Yang R. Fan A. Han Z. & Van Loon A.J. 2017. Lithofacies and origin of the Late Triassic lacustrine muddy gravity-flow deposits and their soft-sediment deformation structures in the Ordos Basin central China. Marine and Petroleum Geology 85 194–219.

  • Yang R. Van Loon A.J. Jin X. Jin Z. Han Z. Fan A. & Liu Q. 2019. From divergent to convergent plates: resulting facies shifts along the southern and western margins of the Sino-Korean Plate during the Ordovician. Journal of Geodynamics

  • Yuan X.Q. Su D.C. He J. Sun A.P. Lv H.B. Li H.B. & Qiao X.F. 2014. The slump structures in the Middle Ordovician on the southern margin of Ordos Basin and their seismic origin. Geological Review 60 529–540 (in Chinese with English abstract).

  • Zhou S.C. Feng Q. Zhao W. Wang Q.Y. Liu Z. Jiang W.J. & Li Y.L. 2011. Sedimentary environments of the Middle Ordovician Pingliang Formation in the Qishan section southern Ordos Basin. Sedimentary Geology and Tethyan Geology 31(4) 28–33 (in Chinese with English abstract).

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