Hybrid submarine flows comprising turbidity current and cohesive debris flow: Deposits, theoretical and experimental analyses, and generalized models

Talling, Peter J.

doi:10.1130/ges00793.1

Cited by 193 publications

(169 citation statements)

References 125 publications

(297 reference statements)

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“…Modified from Fildani and Normark (2004), Klaucke et al (2004), Xu et al (2004Xu et al ( , 2013 and Paull et al (2005Paull et al ( , 2010aPaull et al ( , 2010b. which is consistent with available field observations (Xu 2011;Talling 2013). The dynamics of supercritical flows is an active field of research, and laboratory experiments reveal that important flow properties are substantially different from subcritical flow, such as the velocity and sediment concentration profiles (Sequeiros 2012;Xu 2011).…”

Section: (B) Supercritical-flow Dynamics and Depositssupporting

confidence: 52%

“…Turbulence damping and subsequent collapse, and associated sediment settling into denser nonNewtonian near-bed layers within the flow (Fig. 7A), may explain the widespread occurrence of debris flow deposits in the relatively distal parts of hybrid beds (Ito 2008;Haughton et al 2009;Hodgson 2009;Talling 2013), although these debris flows can themselves sometimes be far travelled on low gradients.…”

Section: (B) Supercritical-flow Dynamics and Depositsmentioning

confidence: 99%

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Key Future Directions For Research On Turbidity Currents and Their Deposits

Talling

Allin

Armitage

et al. 2015

Journal of Sedimentary Research

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Turbidity currents, and other types of submarine sediment density flow, redistribute more sediment across the surface of the Earth than any other sediment flow process, yet their sediment concentration has never been measured directly in the deep ocean. The deposits of these flows are of societal importance as imperfect records of past earthquakes and tsunamogenic landslides and as the reservoir rocks for many deep-water petroleum accumulations. Key future research directions on these flows and their deposits were identified at an informal workshop in September 2013. This contribution summarizes conclusions from that workshop, and engages the wider community in this debate. International efforts are needed for an initiative to monitor and understand a series of test sites where flows occur frequently, which needs coordination to optimize sharing of equipment and interpretation of data. Direct monitoring observations should be combined with cores and seismic data to link flow and deposit character, whilst experimental and numerical models play a key role in understanding field observations. Such an initiative may be timely and feasible, due to recent technological advances in monitoring sensors, moorings, and autonomous data recovery. This is illustrated here by recently collected data from the Squamish River delta, Monterey Canyon, Congo Canyon, and offshore SE Taiwan. A series of other key topics are then highlighted. Theoretical considerations suggest that supercritical flows may often occur on gradients of greater than , 0.6u. Trains of up-slope-migrating bedforms have recently been mapped in a wide range of marine and freshwater settings. They may result from repeated hydraulic jumps in supercritical flows, and dense (greater than approximately 10% volume) near-bed layers may need to be invoked to explain transport of heavy (25 to 1,000 kg) blocks. Future work needs to understand how sediment is transported in these bedforms, the internal structure and preservation potential of their deposits, and their use in facies prediction. Turbulence damping may be widespread and commonplace in submarine sediment density flows, particularly as flows decelerate, because it can occur at low (, 0.1%) volume concentrations. This could have important implications for flow evolution and deposit geometries. Better quantitative constraints are needed on what controls flow capacity and competence, together with improved constraints on bed erosion and sediment resuspension. Recent advances in understanding dilute or mainly saline flows in submarine channels should be extended to explore how flow behavior changes as sediment concentrations increase. The petroleum industry requires predictive models of longer-term channel system behavior and resulting deposit architecture, and for these purposes it is important to distinguish between geomorphic and stratigraphic surfaces

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Section: (B) Supercritical-flow Dynamics and Depositssupporting

confidence: 52%

Section: (B) Supercritical-flow Dynamics and Depositsmentioning

confidence: 99%

Key Future Directions For Research On Turbidity Currents and Their Deposits

Talling

Allin

Armitage

et al. 2015

Journal of Sedimentary Research

Self Cite

166

117

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“…Type C beds are interpreted to represent different stages of flow transformation of turbidity currents into hybrid flows, namely flows in the form of a frontal turbidity current and a lagging co-genetic debris flow (Haughton et al, 2003;Haughton et al, 2009;Talling, 2013;Southern et al, 2015).…”

Section: Discussionmentioning

confidence: 99%

Fill to spill stratigraphic evolution of a confined turbidite mini-basin succession, and its likely well bore expression: The Castagnola Fm, NW Italy

Marini

Patacci

Felletti

et al. 2016

Marine and Petroleum Geology

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This study documents the stratigraphic evolution of the Castagnola ponded turbidite mini-basin through analysis of a detailed base-to-top section measured in the central part of the basin. thickness population suggests that the turbidite system was no longer obstructed frontally, and could step forward onto a healed topography. In order to assess whether the documented trends of turbidite bed characteristics indicative of the 'fill to spill' transition could be recognised from wireline log data alone, synthetic logs were prepared by up-scaling the field data to resolutions typical of borehole geophysical log data. Vertical trends of average bed thickness and net/gross recognisable in the synthetic data suggest that the transition from ponded to spill-dominated situations should be resolvable in geophysical log data.

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“…Sed i ment grav ity flows of ten trans form from ei ther dense, sed iment-rich and lam i nar to less dense, wa tery and of ten tur bu lent cur rents or vice versa: from less dense, tur bu lent to densier flows as they slow down (Fe lix and Peakall, 2006;Fe lix et al, 2009;Haughton et al, 2009;Talling et al, 2012;Talling, 2013). This also gov erns the trans for ma tion of sole struc tures de pending on the flow char ac ter im ply ing the pos si bil ity to use these struc tures, i.e.…”

Section: Implication For Interpretations Of Depositional Environmentmentioning

confidence: 99%

“…The sand stone to mudstone ra tio is 33:1. Based on all these fea tures, the sed i ments of Unit I are in terpreted as high-den sity turbidites and/or debrites (e.g., Haughton et al, 2009;Hodgson, 2009;Talling et al, 2012;Dirnerová et al, 2012;Talling, 2013). Sole struc tures are mainly rep re sented by load struc tures (load casts of Boggs, 2001;Collinson et al, 2006; po lyg o nal ridges of Dzulynski and Simpson, 1966) and mi nor grooves.…”

Section: Sediments and Sole Structures Of The Studied Sectionmentioning

confidence: 99%

Sole structures as a tool for depositional environment interpretation; a case study

Dirnerová

Janočko

2013

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. (2014) Sole struc tures as a tool for depositional en vi ron ment in ter pre ta tion; a case study from the Oligocene Cergowa Sand stone, Dukla Unit (Outer Carpathians, Slovakia). Geo log i cal Quar terly, 58 (1): 41-50, doi: 10.7306/gq.1128 Sole struc tures, typ i cally de vel oped on basal bed ding sur faces of turbidite sand stones, are com monly used as palaeocurrent in di ca tors and in di ca tors of the cur rent abil ity to erode. De tailed anal y sis of types and fre quency of sole struc tures in the 128-m-thick suc ces sion of Lower Oligocene Cergowa Sand stone (Outer West ern Carpathians) also shows their po ten tial as an in di ca tor of flow prop er ties dur ing the de po si tion. The mas sive and amal gam ated sand stones, pre dom i nantly con tain ing load struc tures and mi nor grooves with uni di rec tional ori en ta tion, are sug gested to be de pos ited by high-den sity tur bid ity currents and de bris flows. A wide range of sole struc tures in thick and me dium thick-bed ded sand stones, sug gest ing oblique and re verse flows com pared to the main palaeoflow di rec tion, im plies de po si tion from den sity-strat i fied flows where the lower, denser part has a ten dency to de flect when hits a ba sin floor ob sta cle. The up per, less dense part has an abil ity to come over the ob sta cle and shows only small scat ter in the palaeocurrent di rec tion.

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Hybrid submarine flows comprising turbidity current and cohesive debris flow: Deposits, theoretical and experimental analyses, and generalized models

Cited by 193 publications

References 125 publications

Key Future Directions For Research On Turbidity Currents and Their Deposits

Key Future Directions For Research On Turbidity Currents and Their Deposits

Fill to spill stratigraphic evolution of a confined turbidite mini-basin succession, and its likely well bore expression: The Castagnola Fm, NW Italy

Sole structures as a tool for depositional environment interpretation; a case study

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