Three-dimensionality, longitudinal profile setting, and paleo-discharge capacity of incised valleys in recent stratigraphy of the Sunda Shelf, Indonesia

Kiel, B.; Wood, Lesli J.

doi:10.1127/0372-8854/2011/0062

Cited by 4 publications

(11 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The latter coincides with the north‐east/south‐west Penyu Basin trend, which cross‐cuts the previously dominant north‐west/south‐east Malay Basin trend of the mid‐stream segment (Madon & Watts, ). The Penyu Basin trend also influences other Pleistocene rivers in this area, such as the Molengraaff or North Sunda River, which drained a separate hinterland dominated by southern Sumatra (Darmadi et al ., ; Kiel & Wood, , ; Reijenstein et al ., ).…”

Section: Discussionmentioning

confidence: 99%

“…However, some studies have used the Manning's roughness coefficient ( n ) of modern rivers in order to calculate the bankfull discharge of ancient rivers. Kiel & Wood () used Manning's roughness coefficient ( n ) for the Amazon River ( n = 0·025) because of its inferred analogy with their large, low‐latitude, ancient rivers. In this study, the same Manning's roughness coefficient ( n ) of the Amazon River ( n = 0·025) has also been used because of similarities between the fluvial system identified in this study and that studied by Kiel & Wood ().…”

Section: Discussionmentioning

confidence: 99%

“…Kiel & Wood () used Manning's roughness coefficient ( n ) for the Amazon River ( n = 0·025) because of its inferred analogy with their large, low‐latitude, ancient rivers. In this study, the same Manning's roughness coefficient ( n ) of the Amazon River ( n = 0·025) has also been used because of similarities between the fluvial system identified in this study and that studied by Kiel & Wood (). Furthermore, and in order to calculate the discharge for the channel in subunit 7.3 using Manning's equation, an estimate of the gradient ( S ) of the valley is required.…”

Section: Discussionmentioning

confidence: 99%

“…Furthermore, and in order to calculate the discharge for the channel in subunit 7.3 using Manning's equation, an estimate of the gradient ( S ) of the valley is required. The approach of Kiel & Wood () in estimating the gradient ( S ) (gradient is 10 −4 ) has been followed. Hence, the bankfull discharge estimate based on Manning's equations is estimated as 36 740 m 3 sec −1 for the meandering channel observed in subunit 7.3.…”

Section: Discussionmentioning

confidence: 99%

“…In particular, dataset limitations notwithstanding, the interpretive maps are treated as ‘palaeo‐satellite’, Google Earth‐type images, and they have been imported into ArcGIS for quantitative analysis. A semi‐automatic data extraction workflow has been developed and can be found in Alqahtani () (see also Kiel & Wood, , ).…”

Section: Dataset and Methodologymentioning

confidence: 99%

See 4 more Smart Citations

Nature, origin and evolution of a Late Pleistocene incised valley‐fill, Sunda Shelf, Southeast Asia

et al. 2015

View full text Add to dashboard Cite

Understanding the stratigraphic fill and reconstructing the palaeo-hydrology of incised valleys can help to constrain those factors that controlled their origin, evolution and regional significance. This condition is addressed through the analysis of a large (up to 18 km wide by 80 m deep) and exceptionally well-imaged Late Pleistocene incised valley from the Sunda Shelf (South China Sea) based on shallow three-dimensional seismic data from a large (11 500 km 2 ), 'merge' survey, supplemented with site survey data (boreholes and seismic). This approach has enabled the characterization of the planform geometry, cross-sectional area and internal stratigraphic architecture, which together allow reconstruction of the palaeo-hydrology. The valley-fill displays five notable stratigraphic features: (i) it is considerably larger than other seismically resolvable channel forms and can be traced for at least 180 km along its length; (ii) it is located in the axial part of the Malay Basin; (iii) the youngest part of the valley-fill is dominated by a large (600 m wide and 23 m deep), high-sinuosity channel, with well-developed lateral accretion surfaces; (iv) the immediately adjacent interfluves contain much smaller, dendritic channel systems, which resemble tributaries that drained into the larger incised valley system; and (v) a ca 16 m thick, shell-bearing, Holocene clay caps the valley-fill. The dimension, basin location and palaeohydrology of this incised valley leads to the conclusion that it represents the trunk river, which flowed along the length of the Malay Basin; it connected the Gulf of Thailand in the north with the South China Sea in the south-east. The length of the river system (>1200 km long) enables examination of the upstream to downstream controls on the evolution of the incised valley, including sea-level, climate and tectonics. The valley size, orientation and palaeo-hydrology suggest close interaction between the regional tectonic framework, low-angle shelf physiography and a humid-tropical climatic setting.

show abstract