Controls on the development of valleys, canyons, and unconfined channel–levee complexes on the Pleistocene Slope of East Kalimantan, Indonesia

Saller, Arthur H.; Dharmasamadhi, Ida Njoman Widya

doi:10.1016/j.marpetgeo.2011.09.002

Cited by 33 publications

(20 citation statements)

References 51 publications

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“…The advent of three-dimensional (3D) refl ection seismic data sets (e.g., Posamentier and Kolla, 2003;Saller et al, 2004;Deptuck et al, 2007;Catterall et al, 2010;Armitage et al, 2012;Saller and Dharmasamadhi, 2012) and highresolution seabed imagery (e.g., Twichell et al, 1992;Savoye et al, 2000;Fildani and Normark, 2004;Jegou et al, 2008;Maier et al, 2011;MacDonald et al, 2011) has revolutionized our appreciation of the inherent variability and complexity in the physiography and anatomy of submarine systems dominated by sediment gravity fl ows. The roles of dynamic seabed substrates (e.g., Prather et al, 1998;Mayall et al, 2006;Clark and Cartwright, 2009), depositional relief (e.g., Posamentier and Walker, 2006), inherited bathymetric perturbations (e.g., Adeogba et al, 2005;Olafi ranye et al, 2013), differential compaction (e.g., Koša, 2007), compensational stacking (e.g., Prélat et al, 2009), and channel avulsion (Armitage et al, 2012) have been shown to be primary controls on the physiology and seismic stratigraphy of submarine slope and basin-fl oor systems.…”

Section: Introductionmentioning

confidence: 99%

Depositional architecture of sand-attached and sand-detached channel-lobe transition zones on an exhumed stepped slope mapped over a 2500 km2 area

et al. 2014

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The geomorphology and seismic stratigraphy of deep-water clastic systems from slope valleys through channel-levee systems to basin-fl oor fans have been observed and described in modern and ancient sub surface examples around the world. However, the distribution of sedimentary facies, grain size, and small-scale architectural elements remains poorly constrained. Extensive exposures (>2500 km 2 ) of four stacked deep-water composite sequences have been mapped from heterolithic channel-levee systems on the slope to sand-rich basin-fl oor deposits. The data set from Units C-F of the Fort Brown Formation in the Permian Laingsburg depocenter of South Africa permits a unique opportunity to document and compare their depositional architecture at a high resolution for tens of kilometers downdip.Isopach thickness maps indicate that compensational stacking across multiple stratigraphic scales occurs on the basin fl oor, whereas preferred axial pathways were present on the slope, leading to subvertical stacking patterns. Units C and D are sand-attached systems; slope valley systems are mapped to pass transitionally downslope through leveeconfi ned channels to lobe complexes over distances of >30 km. The slope valley fi lls of Units E and F, however, are separated from their downdip sand-rich lobe complexes by a thin, sand-poor tract several kilometers in length and are termed sand detached. Locally, this sand-poor tract is characterized by a distinctive facies association of thin-bedded turbidites with numerous scours mantled with rip-up clasts, and a top surface that includes megafl utes and remobilized sediments. This assemblage is interpreted to indicate a widespread area of sand bypass.This unique data set provides an exploration-scale insight and understanding of how different segments of a prograding slope evolved over time in terms of gradient, physiography, and hence the degree to which sand was stored or bypassed to the basin fl oor, and the evolution from sand-attached to sand-detached systems. The development of sand-detached systems suggests that a steeper gradient formed, possibly related to developing underlying structure, that led to the development of a stepped slope profi le. The study highlights that updip stratigraphic trapping at reservoir scale can occur with minor bathymetric changes.Gold Open Access: This paper is published under the terms of the CC-BY license.on December 9, 2014 geosphere.gsapubs.org Downloaded from Sand-attached and sand-detached slope to basin-fl oor systems on a stepped slope profi le Geosphere,

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Section: Introductionmentioning

confidence: 99%

Depositional architecture of sand-attached and sand-detached channel-lobe transition zones on an exhumed stepped slope mapped over a 2500 km2 area

et al. 2014

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“…Slope-accretion clinoforms show important geometric changes, which are a consequence of variations on depositional conditions (e.g., Saller & Dharmasamadhi, 2012;Patruno et al, 2015; Fig. 7).…”

Section: Discussionmentioning

confidence: 99%

Seismic expression of depositional elements associated with a strongly progradational shelf margin: northern Santos Basin, southeastern Brazil

Berton

Vesely

2016

Braz. J. Geol.

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Seismic facies analysis and seismic geomorphology are important tools for the analysis of depositional elements in subsurface. This paper aimed to investigate the character and genesis of depositional elements and erosive features associated with an Eocene progradational shelf margin in northern Santos Basin. Identified seismic facies are interpreted as shelf-margin deltas/shoreface deposits, tangential (oblique) clinoforms, sigmoidal clinoforms, topset reflectors, mass-transport deposits and turbidites. These facies are grouped into four associations representing periods of relatively constant environmental conditions. Association 1 is composed of shelf-margin deltas/shoreface deposits, tangential clinoforms and extensive sand--rich turbidites disposed as submarine channels and frontal splays. A progressive increase in clinoform angle within this association has been identified, culminating in high-relief sigmoidal clinoforms with less voluminous turbidites of facies association 2. Association 3 is composed by subparallel to divergent topset reflectors, interpreted as continental to shelfal deposits placed during base-level rises. These are always truncated basinward by slump scars, formed as a consequence of sediment overload at the shelf margin during aggradations. Association 4 is composed of sigmoidal clinoforms, mass-transport deposits and turbidites. Early clinoforms are steeper as a consequence of the topography of the slump scars. Subsequently, dip angles become progressively gentler as the system approach to the equilibrium profile. The steep physiography was favorable for canyon incision, which played an important role in turbidite deposition. Mass-transport deposits, formed subsequent to slope collapse, are composed of mud-rich diamictites, and show strong internal deformation.KEYWORDS: Seismic facies; Seismic geomorphology; Deep-marine deposition; Mass-transport deposits; Turbidite systems. RESUMO: A análise de fácies sísmicas e a geomorfologia sísmica são ferramentas importantes para o estudo de elementos deposicionais em subsuperfície. Neste trabalho foram avaliadas as características e a gênese de elementos deposicionais e de feições erosivas associadas a uma margem progradante desenvolvida no Eoceno no norte da bacia de

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“…We and others have noted abundant sediment waves on the sea floor of the Makassar Strait, which seem to be the product of deep-water tidal currents (Musgrove et al, 2000;Saller et al, 2004Saller et al, , 2010Saller and Dharmasamadhi, 2012). Sediment waves occur from the upper slope (~900 m [~2953 ft]) to the basin floor (~2200 m [~7218 ft]) (Figures 3, 4;Saller et al, 2004Saller et al, , 2010.…”

Section: John B Dunham and Arthur Sallermentioning

confidence: 91%

“…Sediment waves are present in the Kutei Basin. In the Pleistocene of the Kutei Basin, seismic data show a major period of channelized slope and fan deposition during the eustatic lowstand that ended at approximately 240 ka (Saller et al, , 2010Saller and Dharmasamadhi, 2012). Seismic data clearly show a dominance of draping strata in the deep-water Kutei Basin since then (Saller et al, , 2010; Saller and Dharmasamadhi, 2012).…”

Section: John B Dunham and Arthur Sallermentioning

confidence: 99%

Modern internal waves and internal tides along oceanic pycnoclines: Challenges and implications for ancient deep-marine baroclinic sands: Discussion

Dunham¹,

Saller

2014

Bulletin

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Controls on the development of valleys, canyons, and unconfined channel–levee complexes on the Pleistocene Slope of East Kalimantan, Indonesia

Cited by 33 publications

References 51 publications

Depositional architecture of sand-attached and sand-detached channel-lobe transition zones on an exhumed stepped slope mapped over a 2500 km2 area

Depositional architecture of sand-attached and sand-detached channel-lobe transition zones on an exhumed stepped slope mapped over a 2500 km2 area

Seismic expression of depositional elements associated with a strongly progradational shelf margin: northern Santos Basin, southeastern Brazil

Modern internal waves and internal tides along oceanic pycnoclines: Challenges and implications for ancient deep-marine baroclinic sands: Discussion

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