Tectonic evolution and regional setting of the Cuu Long Basin, Vietnam

Schmidt, William; Hoang, Bui Huy; Handschy, James W.; Hai, Vu Trong; Cuong, Trinh Xuan; Tùng, Nguyễn Thanh

doi:10.1016/j.tecto.2019.03.001

Cited by 27 publications

(18 citation statements)

References 47 publications

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“…2), where it is estimated that dextral motion along the Mae Ping Fault took place with comparable late Oligocene-Miocene timing (Smith et al 2007). Further SE in south Vietnam, dextral lateral motion estimated from 31 to 25 Ma along the Mae Ping Fault was responsible for a phase of compression in the Cuu Long basin (Schmidt et al 2019).…”

Section: Cenozoic Exhumation-denudation History Of Thailandmentioning

confidence: 94%

“…*Samples benefited from consequence of sinistral fault activity of the Mae Ping Fault zone from 40 to 31 Ma (Schmidt et al 2019). Here also, a marked change to a dextral shear sense around 31-25 Ma is registered.…”

Section: Cenozoic Exhumation-denudation History Of Thailandmentioning

confidence: 95%

“…The southeastern continuation of these two NW-SE-to north-south-oriented faults coincides with our study area (Figs 2b and 3). The Mae Ping Fault is thought to continue further eastwards and branches into numerous splays in Cambodia close to the Ton Le Sap basin (Ridd & Morley 2011;Morley 2012) and further to the SE into the Cuu Long basin, offshore Vietnam (Schmidt et al 2019) (Fig. 2b).…”

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confidence: 99%

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Cenozoic tectonic evolution of southeastern Thailand derived from low-temperature thermochronology

Nachtergaele

Glorie

Morley

et al. 2019

JGS

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Low-temperature thermochronological techniques, specifically apatite (U-Th)/He and apatite fission-track dating, were used to reconstruct the thermal history of southeastern Thailand. This area is intersected by vast and complex fault networks related to the Cenozoic Mae Ping and Three Pagodas Faults. These were identified from satellite imagery and confirmed by field observations. New apatite fission-track and apatite (U-Th)/He data were collected from crystalline basement blocks within these fault networks. Ages obtained range from 48 to 24 Ma, with most of the samples clustering between 36 and 24 Ma. Thermal history modelling indicates late Eocene-Oligocene exhumation of the exposed granitic and metamorphic basement rocks in southeastern Thailand. Exhumation was regional and was contemporaneous with sinistral fault activity during the late Eocene-early Oligocene along the Mae Ping Fault and Three Pagodas Fault. Moreover, this exhumation occurred coevally with a synrift phase of intracontinental offshore rift basin and half-graben basin development in the eastern Gulf of Thailand. The phase of exhumation ended in the early Miocene, as a result of the changing plate-tectonic forces along the complex plate boundaries of Sundaland.

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Section: Cenozoic Exhumation-denudation History Of Thailandmentioning

confidence: 94%

Section: Cenozoic Exhumation-denudation History Of Thailandmentioning

confidence: 95%

mentioning

confidence: 99%

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Cenozoic tectonic evolution of southeastern Thailand derived from low-temperature thermochronology

Nachtergaele

Glorie

Morley

et al. 2019

JGS

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“…But, at 23 Ma (anomaly 6a) a ridge jump changed the position and direction of spreading by rotating about 15-20° anticlockwise to form the South West subbasin (Sibouet et al, 2016). This shift in orientation caused a change in regional stress and coincides with unconformities in the Cuu Long and Phu Khanh basins (Figures 1 and 8; Fyhn, Boldreel, & Nielsen, 2009;Schmidt et al, 2019). Changes in the regional stress regime are also indicated by changes in rates of the propagation of spreading.…”

Section: Relationship To Ocean Spreadingmentioning

confidence: 98%

Evolution of the Continental Margin of South to Central Vietnam and Its Relationship to Opening of the South China Sea (East Vietnam Sea)

Huu

Carter

Hoàng³

et al. 2022

Tectonics

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The continental margin of Indochina represents the westernmost margin of the South China Sea, a wide continental rift that in the west is mostly submerged. In the region of south to central Vietnam, the location of this study (Figure 1), the continental margin extends offshore for >100 km before oceanic crust is reached. The extension that led to continental break-up has yet to be fully explained but is known to be related to the subduction of the paleo-Pacific plate, which at the time formed a wide Cretaceous magmatic arc with widespread calc-alkaline magmatism across south to central Vietnam and southern China. Subduction was directed to the northeast beneath southern China and westwards below Vietnam, the eastern margin of the Indochina block (Hall, 2012;Hennig-Breitfeld et al., 2021;Zhu et al., 2004).Extension is imprinted on the landscape and geology of Vietnam but to what extent is not yet clear. It also remains uncertain as to when surface uplift took place. Was uplift staggered over a long time or did it occur within a short

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“…The tectonic evolution of Cuu Long Basin can be divided into several main stages including (Schmidt et al, 2019):…”

Section: Geological Backgroundmentioning

confidence: 99%

Integrated workflow in 3D geological model construction for evaluation of CO2 storage capacity of a fractured basement reservoir in Cuu Long Basin, Vietnam

Thanh

Sugai

Nguele

et al. 2019

International Journal of Greenhouse Gas Control

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Carbon dioxide (CO2) capture, utilization, and storage (CCUS) have been proposed as a possible technique to mitigate climate change. In this vein, CO2 storage through enhanced oil recovery (EOR) in depleted hydrocarbon reservoirs is touted as a most effective approach because it synergistically increases oil production and enables permanent sequestration into the reservoirs.However, the construction of a reasonable 3D geological model for this storage reservoir is a major challenge. Thus, this study presents an efficient workflow for constructing an accurate geological model for the evaluation of CO2 storage capacity in a fractured basement reservoir in the Cuu Long Basin, Vietnam. Artificial neural network (ANN) has been used to predict porosity and permeability values through seismic attributes and well log data. The predicted values were selected using high correlation factors with well log data. Subsequently, the Sequential Gaussian Simulation and co-kriging methods were applied to generate a 3D static geological model by using azimuth and dip parameters. Finally, drill stem test matching was performed to validate the accuracy of the porosity and permeability models through dynamic simulation. A validation 3D reservoir model, which integrates geophysical, geological, and engineering data from fractured basement formation in Cuu Long Basin, was further constructed to calculate theoretical CO2 storage capacity. As a result, the calculated storage capacity for the fractured basement reservoir ranged from 7.02 to 99.5 million metric tons. These estimated results demonstrate that fractured basement reservoir has a combined potential for CO2 storage and EOR in the Cuu Long Basin.

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Tectonic evolution and regional setting of the Cuu Long Basin, Vietnam

Cited by 27 publications

References 47 publications

Cenozoic tectonic evolution of southeastern Thailand derived from low-temperature thermochronology

Cenozoic tectonic evolution of southeastern Thailand derived from low-temperature thermochronology

Evolution of the Continental Margin of South to Central Vietnam and Its Relationship to Opening of the South China Sea (East Vietnam Sea)

Integrated workflow in 3D geological model construction for evaluation of CO2 storage capacity of a fractured basement reservoir in Cuu Long Basin, Vietnam

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