Accommodation succession (δ
            <i>A</i>
            /δ
            <i>S</i>
            ) sequence stratigraphy: observational method, utility and insights into sequence boundary formation

Neal, Jack E.; Abreu, Vitor; Bohacs, Kevin M.; Feldman, Howard R.; Pederson, Keriann H.

doi:10.1144/jgs2015-165

Cited by 79 publications

(43 citation statements)

References 33 publications

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“…Patruno, Hampson, and Jackson () suggest that continental‐margin‐scale clinoforms can only prograde basinward or stay stable. Although retrogradational offlap break trajectories can also be observed (Neal, Abreu, Bohacs, Feldman, & Pederson, ), they are considered to represent shoreface or shelf‐prism trajectories that gradually decoupled from the shelf‐edge ones when sea level is rising (Helland‐Hansen & Hampson, ; Patruno, Hampson, & Jackson, ; Patruno & Helland‐Hansen, ).…”

Section: Datasets and Methodsmentioning

confidence: 99%

Along‐strike variability in shelf‐margin morphology and accretion pattern: An example from the northern margin of the South China Sea

et al. 2018

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Interplays among diachronous tectonism, uneven sediment supply, and local marine hydraulic processes make the northern margin of the South China Sea (SCS) an ideal location to investigate the complexity of along‐strike variability in shelf margins. This study examines shelf‐margin morphology, stratigraphy, and sedimentation from the northern SCS using multichannel seismic reflection profiles complemented with the data from commercial and ocean drilling sites. Analysis of seismic reflection profiles reveals three categories of shelf‐margin cross‐sectional profiles, the concave‐up, linear, and sigmoidal, according to which five margin sectors were recognized. Results show that these margin segments differ in relief, shelf‐edge trajectory, submarine canyon development, and long‐term accretion pattern. The westernmost margin sector, or the Yinggehai (YGH)‐western Qiongdongnan (QDN) margin, has appeared to be supply dominated since its commencement at ca. 10.5 Ma, which is characterized by well‐developed prograding clinoforms, low‐angle shelf‐edge trajectories, and an absence of canyons. Presence of concave‐up profiles is also suggestive of high sediment influx. In contrast, the eastern QDN margin was primarily regulated by local subsidence and faulting, leading to a stationary shelf‐edge migrating pattern and linear upper‐slope morphology. Densely distributed slope‐confined gullies indicate the margin’s disequilibrium and erosive nature. Further east, the Pearl River Mouth (PRM) margin formed much earlier (ca. 30 Ma) and experienced a more complicated accretion history, including three phases which were dominated by sequential marginal faulting (before ca. 30 Ma), basement structure (ca. 30–23 Ma), and sediment supply (ca. 23 Ma to the present). The overall sigmoidal morphology and truncated stratigraphy of this margin probably resulted from the sculpting of local marine processes, especially ocean currents and internal waves. The exception of the central PRM margin where concave‐up profiles develop is mainly related to canyon erosion. Overall, this study highlights the vital role of local forcing factors in controlling along‐margin variations and determining the final fates of different margin segments. A comparison between the northern SCS and other well‐established examples reveals that concave‐upward shelf‐margin shapes, which are usually associated with high sediment supply, little influence from hydraulic regimes, or sometimes, high degree of canyon development, may be an indicator of good reservoir potential beyond the shelf edge.

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Section: Datasets and Methodsmentioning

confidence: 99%

Along‐strike variability in shelf‐margin morphology and accretion pattern: An example from the northern margin of the South China Sea

et al. 2018

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“…Results from these models, combined with a source-to-sink approach to depositional systems, have already influenced the sequence stratigraphic model and method, especially in terms of ideas about sediment bypass in deep water (e.g. Burgess & Hovius 1998;Muto & Steel 2002;Dixon et al 2012) and the decoupling of the linkage between systems tracts and sea-level behaviour, so that usage of lowstand and highstand as adjectives referring to systems tracts is gradually being discontinued Neal et al 2016).…”

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Contributions to sequence stratigraphy from analogue and numerical experiments

Muto

Steel

Burgess

2016

JGS

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The sequence stratigraphic model, although no longer focused on eustasy and accommodation, has been until recently based largely on observation and interpretation of outcrop and subsurface data. This approach may be restrictive if the current model places limits on what is observed and how observations are interpreted. To make progress in our understanding of strata, the sequence stratigraphic model and method should be tested against and fully incorporate theoretical and experimental results that provide new knowledge of (1) autogenesis, (2) intrinsic stratigraphic responses, (3) alluvial grade, and (4) scales appropriate to single depositional systems evolving with relative sea-level changes. More extensive inclusion of analogue and numerical experimental results could lead to significant modification and refinement of existing sequence stratigraphic models.The emergence of the seismic and sequence stratigraphy method and model in the 1970s is often described as a revolution in the science of stratigraphy, and has been compared to the origination and establishment of plate tectonics theory (e.g. Miall 1995;Catuneanu 2006). Certainly, sequence stratigraphy, especially through the use of seismic data, has had a huge impact on the study and interpretation of strata in the late 20th century. It showed that sedimentary strata imaged by seismic data were commonly organized into discrete, repetitive unconformity bounded onlapping-to-downlapping depositional sequences. The early model used long-standing ideas that gave priority to eustasy as the best-known repetitive driving mechanism to create sequences. However, a simple eustasy-based interpretation of the repetitive stratal packages attracted criticism (e.g. Christie-Blick et al. 1988Miall & Miall 2001, and references therein) and the more recent sequence stratigraphic models (e.g. Wilgus et al.

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“…Emphasizing the importance of a clear distinction between method and model, and building on their important earlier paper (Neal & Abreu 2009), Neal et al (2016 describe the latest sequence stratigraphic thinking of the Exxon group. They describe how the accommodation succession method is a refinement of previous sequence stratigraphic methods and emphasize the importance of following a common method to make observations.…”

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confidence: 99%

“…He suggests that glacioeustatic oscillations shaped stratal geometries in a particular and characteristic manner demonstrably different from how changes in accommodation produce sequences during times lacking such high-amplitude, high-frequency relative sea-level oscillations. It is interesting to note that Ridente (2016) uses data from the same stratigraphic interval on the same continental margin as Neal et al (2016), yet reaches what seem to be very different conclusions; perhaps proponents of a standardized sequence stratigraphic method and workflow have some work left to do.…”

mentioning

confidence: 99%

“…These various papers perhaps give some indication of how this could go; if the view of Neal et al (2016) is correct, evolution of the method has already made significant progress in providing a useful and predictive tool. Challenges arising in how to apply the method to new types of data (Turner et al 2016), or how to adapt it for particular forcing mechanisms (Ridente 2016) do not preclude an evolutionary approach.…”

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Introduction to the future of sequence stratigraphy: evolution or revolution?

Burgess

Allen

Steel

2016

JGS

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Sequence stratigraphy was first developed as concepts and methods from the late 19th to mid 20th century by geologists such as Barrell and Sloss. It is now at the forefront of how sedimentary geologists observe, record, model and predict strata. The Geological Society William Smith meeting in Burlington House in September 2014 considered the current state and future developments in sequence stratigraphy, and focused particularly on how the subject should progress, either by evolution or by revolution. We feel that this is a relevant question because of continuing debate, and in some cases controversy, about what sequence stratigraphy is, how we do it and what it can be used for. For example, one of the major hindrances to progress has been the interweaving of description and interpretation, mixing method with model. This has been pointed out and discussed by various researchers (Helland-Hansen & Gjelberg 1994; Burgess & Prince in press). This thematic set of papers presents a sample of the state-of-the-art in sequence stratigraphy, representing how the method and model is now being debated and developed, from a plea to retain the earliest version of the concept to the inclusion of more radical ideas stimulated from experimental stratigraphy.

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Accommodation succession (δ A /δ S ) sequence stratigraphy: observational method, utility and insights into sequence boundary formation

Cited by 79 publications

References 33 publications

Along‐strike variability in shelf‐margin morphology and accretion pattern: An example from the northern margin of the South China Sea

Along‐strike variability in shelf‐margin morphology and accretion pattern: An example from the northern margin of the South China Sea

Contributions to sequence stratigraphy from analogue and numerical experiments

Introduction to the future of sequence stratigraphy: evolution or revolution?

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