Deep‐sea channel evolution and stratigraphic architecture from inception to abandonment from high‐resolution Autonomous Underwater Vehicle surveys offshore central California

The Lucia Chica channel system is an avulsion belt with four adjacent channels that progressively avulsed to the north‐east from a single, upslope feeder channel. Avulsion occurred from underfilled channels, leaving open channels that were reactivated by flows stripped from younger, adjacent channels. Differences in relief (height from channel thalweg to levée crest), sinuosity and levée stratigraphy between adjacent channels correspond to relative channel age, and indicate a change in channel morphology and architecture with time. Potential triggers for the change over time include differences in gradient, flow behaviour and characteristics, and channel evolution. Gradient does not appear to be a major control on channel formation and avulsion because adjacent channels formed on the same gradient. Based on available ultra‐high‐resolution remote imaging obtained with an Autonomous Underwater Vehicle, differences in adjacent channel morphology are interpreted to be primarily a result of differences in channel maturity. The interpreted sequence of channel maturity involves erosional channel inception through scouring and incipient channels (defined by linear trains of scours) prior to development of continuous thalwegs. Channel narrowing, formation and growth of levées, increasing channel relief and development of sinuosity occurred as channels evolved. The evolutionary sequence interpreted from the high‐resolution Lucia Chica dataset provides a unique perspective on intrinsic controls of architecture for single channel elements. In addition to helping bridge the gap between outcrop and industry‐standard reflection‐seismic data resolutions and scopes, interpretations in this study also expose potential problems with hierarchical classifications in three‐dimensional imaging of distributary systems, and provide potentially important analogues for evolutionary morphologies not resolved in other deep‐water channel systems.

[1]  K. Emery,et al.  Submarine Photography off the California Coast , 1946, The Journal of geology.

[2]  A. Lawson.  SEA BOTTOM OFF THE COAST OF CALIFORNIA A review of Special Paper 31, Geological Society of America, by Shepard and Emery, 1941 , 1950 .

[3]  E. Buffington.  Submarine "Natural Levees" , 1952, The Journal of Geology.

[4]  J. C. Crowell.  Submarine Canyons Bordering Central and Southern California , 1952, The Journal of Geology.

[5]  P. Kuenen.  ORIGIN AND CLASSIFICATION OF SUBMARINE CANYONS , 1953 .

[6]  G. Deacon,et al.  Submarine Geology , 1960, Nature.

[7]  D. Piper,et al.  Distributary channels, sand lobes, and mesotopography of Navy Submarine Fan, California Borderland, with applications to ancient fan sediments , 1979 .

[8]  W. Normark,et al.  Acoustic Facies and Sediment Composition of the Mississippi Fan Drill Sites, Deep Sea Drilling Project Leg 96 , 1986 .

[9]  Eez-Scan Scientific Staff.  Atlas of the Exclusive Economic Zone, western conterminous United States , 1986 .

[10]  D. Mcculloch.  Regional Geology and Hydrocarbon Potential of Offshore Central California , 1987 .

[11]  W. Normark,et al.  Comparing Examples of Modern and Ancient Turbidite Systems: Problems and Concepts , 1987 .

[12]  T. Cross,et al.  Anatomy of an avulsion , 1989 .

[13]  R. Kowsmann,et al.  Seismic Facies and Late Quaternary Growth of Amazon Submarine Fan , 1991 .

[14]  J. Clark,et al.  Quantitative analysis of the geometry of submarine channels: Implications for the classification of submarine fans , 1992 .

[15]  J. Howie,et al.  Integrated crustal structure across the south central California Margin: Santa Lucia escarpment to the San Andreas Fault , 1993 .

[16]  N. Smith,et al.  Fine-grained splay deposition in the avulsion belt of the lower Saskatchewan River, Canada , 1994 .

[17]  Dale N. Chayes,et al.  Improved processing of Hydrosweep DS multibeam data on the R/V Maurice Ewing , 1996 .

[18]  J. Clark,et al.  Architectural Elements and Growth Patterns of Submarine Channels: Application to Hydrocarbon Exploration , 1996 .

[19]  Normark,et al.  Sea level controls on the textural characteristics and depositional architecture of the Hueneme and associated submarine fan systems, Santa Monica Basin, California , 1998 .

[20]  Nikolaos D. Katopodes,et al.  Hydrodynamics of Turbid Underflows. II: Aggradation, Avulsion, and Channelization , 1999 .

[21]  D. Stow,et al.  Deep-water sedimentary systems: New models for the 21st century , 2000 .

[22]  T. Elliott.  Megaflute erosion surfaces and the initiation of turbidite channels , 2000 .

[23]  J. Coleman,et al.  Deep-water reservoirs of the world , 2000 .

[24]  P. Bourges,et al.  Evolution of deep-water Tertiary sinuous channels offshore Angola (west Africa) and implications for reservoir architecture , 2001 .

[25]  H. G. Greene,et al.  Caught in the act: the 20 December 2001 gravity flow event in Monterey Canyon , 2002 .

[26]  C. Paull,et al.  Pockmarks off Big Sur, California , 2002 .

[27]  P. Hill,et al.  Quantitative analysis of variations in depositional sequence thickness from submarine channel levees , 2002 .

[28]  R. Wynn,et al.  Characterization and recognition of deep-water channel-lobe transition zones , 2002 .

[29]  Henry W. Posamentier,et al.  Seismic Geomorphology and Stratigraphy of Depositional Elements in Deep-Water Settings , 2003 .

[30]  K. Campion,et al.  Outcrop Expression of Confined Channel Complexes , 2003 .

[31]  M. Barton,et al.  Architecture and evolution of upper fan channel-belts on the Niger Delta slope and in the Arabian Sea , 2003 .

[32]  B. Kneller.  The influence of flow parameters on turbidite slope channel architecture , 2003 .

[33]  Henry W. Posamentier,et al.  Depositional elements associated with a basin floor channel-levee system: case study from the Gulf of Mexico , 2003 .

[34]  B. Savoye,et al.  Multiple terraces within the deep incised Zaire Valley (ZaïAngo Project): are they confined levees? , 2004, Geological Society, London, Special Publications.

[35]  J. Disnar,et al.  Organic matter accumulation and preservation controls in a deep sea modern environment: an example from Namibian slope sediments. , 2004 .

[36]  A. Fildani,et al.  Late Quaternary evolution of channel and lobe complexes of Monterey Fan , 2004 .

[37]  Clark R. Chapman,et al.  RIVER AVULSIONS AND THEIR DEPOSITS , 2005 .

[38]  T. McHargue,et al.  Transient fan architecture and depositional controls from near-surface 3-D seismic data, Niger Delta continental slope , 2005 .

[39]  A HIERARCHY OF DEEP-WATER ARCHITECTURAL ELEMENTS WITH REFERENCE TO SEISMIC RESOLUTION: IMPLICATIONS FOR RESERVOIR PREDICTION AND MODELING , 2005 .

[40]  A. Fildani,et al.  Channel formation by flow stripping: large‐scale scour features along the Monterey East Channel and their relation to sediment waves , 2006 .

[41]  E. Jones,et al.  Turbidite channel reservoirs—Key elements in facies prediction and effective development , 2006 .

[42]  V. Kolla.  A review of sinuous channel avulsion patterns in some major deep-sea fans and factors controlling them , 2007 .

[43]  D. Mohrig,et al.  Deep turbidity currents in shallow channels , 2007 .

[44]  S. J. Friedmann,et al.  Seismic Geomorphology and Evolution of Submarine Channels from the Angolan Continental Margin , 2007 .

[45]  B. Makaske,et al.  Middle Holocene Avulsion-Belt Deposits in the Central Rhine–Meuse Delta, The Netherlands , 2007 .

[46]  Douglas J. Jerolmack,et al.  Scaling relationships and evolution of distributary networks on wave‐influenced deltas , 2007 .

[47]  D. Edmonds,et al.  Mechanics of river mouth bar formation: Implications for the morphodynamics of delta distributary networks , 2007 .

[48]  Z. Sylvester,et al.  Migration–aggradation history and 3-D seismic geomorphology of submarine channels in the Pleistocene Benin-major Canyon, western Niger Delta slope , 2007 .

[49]  R. Arnott,et al.  Anatomy and Evolution of a Slope Channel-Complex Set (Neoproterozoic Isaac Formation, Windermere Supergroup, Southern Canadian Cordillera): Implications for Reservoir Characterization , 2007 .

[50]  R. Wynn,et al.  Sinuous deep-water channels: Genesis, geometry and architecture , 2007 .

[51]  D. Mohrig,et al.  Constructional Canyons Built by Sheet-Like Turbidity Currents: Observations from Offshore Brunei Darussalam , 2007 .

[52]  B. Kneller,et al.  Anatomy of a submarine channel-levee : An example from Upper Cretaceous slope sediments, Rosario Formation, Baja California, Mexico , 2007 .

[53]  B. Savoye,et al.  Dimensions and architecture of late Pleistocene submarine lobes off the northern margin of East Corsica , 2008 .

[54]  D. Mohrig,et al.  Quantifying the morphology and growth of levees in aggrading submarine channels , 2008 .

[55]  D. Mohrig,et al.  Interactions between turbidity currents and topography in aggrading sinuous submarine channels: A laboratory study , 2008 .

[56]  C. Nittrouer,et al.  Evidence for superelevation, channel incision, and formation of cyclic steps by turbidity currents in Eel Canyon, California , 2008 .

[57]  Hans Thomas,et al.  High-Resolution Multibeam, Sidescan, and Subbottom Surveys Using the MBARI AUV D. Allan B , 2008 .

[58]  D. Caress,et al.  Fine‐scale relief related to Late Holocene channel shifting within the floor of the upper Redondo Fan, offshore Southern California , 2009 .

[59]  O. Martinsen,et al.  Allogenic vs. Autogenic Controls on Megaflute Formation , 2009 .

[60]  Marcelo H. García,et al.  Laboratory experiments on the formation of subaqueous depositional gullies by turbidity currents , 2009 .

[61]  S. Graham,et al.  Evolution and stratigraphic architecture of marine slope gully complexes: Monterey Formation (Miocene), Gaviota Beach, California , 2009 .

[62]  J. P. Nystuen,et al.  Recognition and significance of sharp‐based mouth‐bar deposits in the Eocene Green River Formation, Uinta Basin, Utah , 2010 .

[63]  W. Dietrich,et al.  Morphodynamics of subaqueous levee formation: Insights into river mouth morphologies arising from experiments , 2010 .

[64]  J. Xu,et al.  Normalized velocity profiles of field-measured turbidity currents , 2010 .

[65]  T. McHargue,et al.  High-Relief Slope Clinoform Development: Insights from Outcrop, Magallanes Basin, Chile , 2010 .

[66]  I. Montañez,et al.  Dynamic Carboniferous climate change, Arrow Canyon, Nevada , 2010 .

[67]  A. Fildani,et al.  A Test of Initiation of Submarine Leveed Channels by Deposition Alone , 2010 .

[68]  D. Caress,et al.  Origins of large crescent-shaped bedforms within the axial channel of Monterey Canyon, offshore California , 2010 .

[69]  T. Garlan,et al.  Transport of terrestrial organic matter in the Ogooué deep sea turbidite system (Gabon) , 2011 .

[70]  Eldon Gath,et al.  Earth Surface Processes, Landforms, and Sediment Deposits , 2011 .

[71]  H. Posamentier,et al.  Architecture of turbidite channel systems on the continental slope: Patterns and predictions , 2011 .

[72]  M. Rovere,et al.  Architecture of a modern transient slope fan (Villafranca fan, Gioia basin–Southeastern Tyrrhenian Sea) , 2011 .

[73]  D. Lowe,et al.  Two fundamentally different types of submarine canyons along the continental margin of Equatorial Guinea , 2011 .

[74]  A. Fildani,et al.  Terrestrial source to deep-sea sink sediment budgets at high and low sea levels: Insights from tectonically active Southern California , 2011 .

[75]  Z. Sylvester,et al.  A model of submarine channel-levee evolution based on channel trajectories: Implications for stratigraphic architecture , 2011 .

[76]  B. Selleck,et al.  Introduction: New developments in Grenville geology: In honor of James McLelland , 2011 .

[77]  D. Caress,et al.  The elusive character of discontinuous deep-water channels: New insights from Lucia Chica channel system, offshore California , 2011 .

[78]  D. Caress,et al.  High-resolution bathymetry of the axial channels within Monterey and Soquel submarine canyons, offshore central California , 2011 .

[79]  T. McHargue,et al.  The natural range of submarine canyon-and-channel longitudinal profiles , 2011 .

[80]  D. Hodgson,et al.  Sedimentological criteria to differentiate submarine channel levee subenvironments: Exhumed examples from the Rosario Fm. (Upper Cretaceous) of Baja California, Mexico, and the Fort Brown Fm. (Permian), Karoo Basin, S. Africa , 2011 .

[81]  D. Caress,et al.  Punctuated Deep-Water Channel Migration: High-Resolution Subsurface Data from the Lucia Chica Channel System, Offshore California, U.S.A. , 2012 .

[82]  T. McHargue,et al.  Postavulsion channel evolution: Niger Delta continental slope , 2012 .

[83]  J. Imran,et al.  Three‐dimensional numerical simulation of turbidity currents in a submarine channel on the seafloor of the Niger Delta slope , 2012 .

[84]  A. Fildani,et al.  Erosion at inception of deep-sea channels , 2013 .