An overview of the sedimentary geology of the Bengal Basin in relation to the regional tectonic framework and basin-fill history

Alam, Md. Mahabub; Curray, Joseph R.; Chowdhury, M.Lutfar Rahman; Gani, M. Royhan

doi:10.1016/s0037-0738(02)00180-x

Cited by 503 publications

(325 citation statements)

References 34 publications

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“…50 Ma probably marked the termination of the Neo-Tethyan oceanic slab subduction (e.g., Chung et al, 2005;Wen et al, 2008a). In addition, an Early Eocene Neo-Tethyan slab breakoff, involving concomitant topographic uplift in southern Tibet (Chung et al, 2005;Kohn and Parkinson, 2002), is consistent with voluminous Early Eocene sediments eroded from the uplifted orogeny in the Bengal basin (Alam et al, 2003).…”

Section: Early Eocene Neo-tethyan Slab Break-offmentioning

confidence: 86%

Petrogenesis of the Early Eocene adakitic rocks in the Napuri area, southern Lhasa: Partial melting of thickened lower crust during slab break-off and implications for crustal thickening in southern Tibet

Wang

Jiang

et al. 2014

Lithos

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Section: Early Eocene Neo-tethyan Slab Break-offmentioning

confidence: 86%

Petrogenesis of the Early Eocene adakitic rocks in the Napuri area, southern Lhasa: Partial melting of thickened lower crust during slab break-off and implications for crustal thickening in southern Tibet

Wang

Jiang

et al. 2014

Lithos

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“…The Bengal Basin constitutes the largest delta complex in the world, which is well known for development of thick sedimentary sequence of Early Cretaceous to Holocene in age (Alam et al, 2003). The basin, as a remnant ocean basin, formed due to northwestward drift of the Indian plate and its oblique collision through the Sino-Tibetan plate and Burmese plate (Ingersoll et al, 1995, Alam et al, 2003.…”

Section: Geological Settingmentioning

confidence: 99%

“…The basin, as a remnant ocean basin, formed due to northwestward drift of the Indian plate and its oblique collision through the Sino-Tibetan plate and Burmese plate (Ingersoll et al, 1995, Alam et al, 2003. This oblique subduction has generated the westward migration of accretionary wedges (Dasgupta and Nandy, 1995, Gani and Alam, 1999, Alam et al, 2003. The Bengal Basin is bounded to the west by the Indian Shield Platform, to the east by the Indo-Burman Ranges, to the north by the Shillong Massif, and to the south it opens to the Bay of Bengal (Fig.…”

Section: Geological Settingmentioning

confidence: 99%

“…The Paleocene to Late Eocene Jaintia Group (Tura Sandstone, Sylhet Limestone and Kopili Shale) consists mainly of sandstones, mudstones, carbonaceous materials, nummulitic limestones and fossiliferous sediments. The Jaintia Group was deposited in shallow marine to deltaic environments (Johnson and Alam, 1991, Khan, 1991, Reimann, 1993, Alam et al, 2003, Hossain et al, 2009, 2010. The Late Eocene to Early Miocene Barail Group (Jenam and Renji Formations) consists mainly of sandstones with alternating siltstones and mudstones.…”

Section: Geological Settingmentioning

confidence: 99%

“…The Sylhet Basin is a sub-basin of the Bengal Basin, a tectonically complex province in northeastern Bangladesh (Hossain et al, 2010). This basin fill comprises about 22 km thick terrestrial to marine clastic sedimentary sequences with tiny carbonate rocks (Alam et al, 2003, Hossain et al, 2009. The Kailashtila gas field (KGF) lies in the eastern margin of the Sylhet Basin ( Fig.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Evaluation of natural gas production optimization in Kailashtila gas field in Bangladesh using decline curve analysis method

Shah

Hossain

2015

Bangladesh J. Sci. Ind. Res.

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Decline curve analysis of well no KTL-04 from the Kailashtila gas field in northeastern Bangladesh has been examined to identify their natural gas production optimization. KTL-04 is one of the major gas producing well of Kailashtila gas field which producing 16.00 mmscfd. Conventional gas production methods depend on enormous computational efforts since production systems from reservoir to a gathering point. The overall performance of a gas production system is determined by flow rate which is involved with system or wellbore components, reservoir pressure, separator pressure and wellhead pressure. Nodal analysis technique is used to performed gas production optimization of the overall performance of the production system. F.A.S.T. Virtu Well™ analysis suggested that declining reservoir pressure 3346.8, 3299.5, 3285.6 and 3269.3 psi(a) while signifying wellhead pressure with no changing of tubing diameter and skin factor thus daily gas production capacity is optimized to 19.637, 24.198, 25.469, and 26.922 mmscfd, respectively.

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Effects of tectonic deformation and sea level on river path selection: Theory and application to the Ganges-Brahmaputra-Meghna River Delta

Reitz

Pickering

Goodbred

et al. 2015

J. Geophys. Res. Earth Surf.

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The set of active rivers of the Ganges-Brahmaputra-Meghna (GBM) Delta in Bangladesh overlies an active plate boundary that continually modifies the landscape of the delta by deformation. The response of rivers to spatially variable subsidence, from tectonic tilting or other causes, has been thought to include preferred occupation of regions of higher subsidence. In this paper, we develop further the theoretical framework for analysis of the interplay of tectonics and river dynamics, and apply this model to conditions in the GBM Delta. First, we examine the overall competition between variable subsidence and channel dynamics, and find that tilting in Bangladesh should be strong enough to influence river path selection. We then present new theory for the effect of subsidence that is spatially (not temporally) variable. We find a constant residence timescale on different parts of the delta, and differing frequencies of avulsion to these locations, and describe the effects of incision or floodplain deposition on these quantities. We present estimates of the channel residence timescale of the Jamuna (Brahmaputra) River reconstructed from the lithology, provenance, and dating of sediment cores. We apply our framework to a map of regional subsidence to predict the effects on avulsion for the Jamuna River. Comparison between our predicted (2150 years) and our stratigraphically based estimates of avulsion timescale (1800 years) shows encouraging consistency.

show abstract

An overview of the sedimentary geology of the Bengal Basin in relation to the regional tectonic framework and basin-fill history

Cited by 503 publications

References 34 publications

Petrogenesis of the Early Eocene adakitic rocks in the Napuri area, southern Lhasa: Partial melting of thickened lower crust during slab break-off and implications for crustal thickening in southern Tibet

Petrogenesis of the Early Eocene adakitic rocks in the Napuri area, southern Lhasa: Partial melting of thickened lower crust during slab break-off and implications for crustal thickening in southern Tibet

Evaluation of natural gas production optimization in Kailashtila gas field in Bangladesh using decline curve analysis method

Effects of tectonic deformation and sea level on river path selection: Theory and application to the Ganges-Brahmaputra-Meghna River Delta

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