Exhumation of west Sundaland: A record of the path of India?

Sautter, Benjamin; Pubellier, Manuel; Schlögl, Silvia Králiková; Maţenco, Liviu; Andriessen, P.A.M.; Mathew, Manoj Joseph

doi:10.1016/j.earscirev.2019.102933

Cited by 9 publications

(8 citation statements)

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“…Thermochronologic data from the Malay Peninsula are from Krähenbuhl (1991), Cottam, Hall, and Ghani (2013) and Kassa et al (2019), while constraints from peninsular Thailand are from Upton (1999) and Sautter et al (2019). Upton (1999) also provides regional control over much of Thailand, but with additional detail in SE Thailand derived from Nachtergaele et al (2020) (see Figure 2 to show where specific areas are located).…”

Section: Resultsmentioning

confidence: 99%

“…Simplified cooling histories of the potential source terrains supplying sediment to the Gulf of Thailand and Sunda Shelf. Kinabalu‐Sabah is from Cottam, Hall, Sperber, et al (2013), Rajang‐Sarawak is from Hutchison et al (2000), Peninsular Malaysia is from Upton (1999) and Sautter et al (2019), Peninsular Thailand from Sautter et al (2019), Western Thailand is from Upton (1999), Eastern Thailand is from Upton (1999), SE Thailand is from Nachtergaele et al (2020), Cambodia is from Fyhn et al (2016) and southern Indochina is from Carter et al (2000). Coloured horizontal bands show the partial annealing zones for a series of low‐temperature thermochronometers.…”

Section: Resultsmentioning

confidence: 99%

“…Applying these gradients to the thermal histories of the bedrock allows a rough estimate of erosion from each of the major sources to be derived (Table 2). For example, with a mean 16.4 Ma apatite U-Th/ He age in Peninsular Thailand (Sautter et al, 2019) we infer 60°C of cooling since 16.4 Ma (Ehlers & Farley, 2003). Because the geothermal gradient in this area is ca.…”

Section: Balancing Erosion and Sedimentationmentioning

confidence: 94%

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Syn‐ and post‐rift lower crustal flow under the Sunda Shelf, southern Vietnam: A role for climatically modulated erosion

Clift

Wilson

2023

Basin Research

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Tectonic subsidence on rifted, passive continental margins are largely controlled by patterns of extension and the nature of strain partitioning in the lithosphere. The Sunda Shelf, adjacent to the SW South China Sea, is characterized by deep basins linked to regional Cenozoic extension associated with propagating seafloor spreading caused by slab pull from the south. Analysis of seismic reflection profiles and drilled sections crossing the Nam Con Son and Cuu Long basins highlight Oligocene extension, with most of the thinning concentrated in the ductile mid‐lower crust. Upper crustal extension was modest and ductile flow is inferred to be directed northwestwards, towards the oceanic crust. Basin inversion occurred in the Mid Miocene, associated with the collision of the Dangerous Grounds Block and Borneo. Subsequent accelerated tectonic subsidence exceeded predictions from uniform extension models assumed to relate to extensional collapse after inversion. We correlate this to a period of faster erosion onshore driven by strong monsoon rains in Indochina and Peninsular Thailand at that time. Erosion of the onshore basement, inducing rock uplift and coupled with loading of the basins offshore, drives ductile mid‐lower crustal flow, likely to the northeast under Indochina, and/or to the west where Plio‐Pleistocene subsidence of the shelf is very slow. Significant sediment delivery from the Mekong River into the Cuu Long Basin began in the Late Miocene and migrated seawards as the basin filled. Mass balancing suggests that the basins of this part of the Sunda Shelf are filled through erosion of bedrock sources around the Gulf of Thailand. There is no need for sediment delivery from a major river draining the Tibetan Plateau to account for the deposited volumes.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Balancing Erosion and Sedimentationmentioning

confidence: 94%

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Syn‐ and post‐rift lower crustal flow under the Sunda Shelf, southern Vietnam: A role for climatically modulated erosion

Clift

Wilson

2023

Basin Research

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“…The underlying mechanisms of the series of events are still poorly understood, although cessation of subduction along the Sunda margin and subsequent collision of various microcontinental fragments with the southern margin of Sundaland (Clements et al 2011;Hall 2012;Cottam et al 2013) are presumed and await affirmative documentation. An early extension movement stretching N-S in the Latest Cretaceous to the Early Paleocene was reported (Kawakami et al 2014;Md Ali et al 2016;François et al 2017;Sautter et al 2017Sautter et al , 2019. Rapid exhumation of the plutons during the Late Eocene to the Oligocene was interpreted to have counteracted the resumption of the subduction event with extensional detachments located all around the Sunda margin (Cottam et al 2013) at nearly 45 Ma (Hall 2012).…”

Section: Regional Geological Settingmentioning

confidence: 88%

Geochemical evolution of structure-bedding controlled hydrothermal dolomites of the Kinta Valley, Western Malaysia

Hui

Nagarajan

Ramkumar

et al. 2022

Carbonates Evaporites

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Study of secondary dolomitization and documentation of the evolution of basinal fluids and host rock, especially that of fine-grained deepwater carbonate mudstone are of interest toward of reservoir characterization. From this perspective, field characteristics in relation to mineralogy, petrography and geochemistry of the Paleaozoic carbonates of the Kinta Valley, Peninsular Malaysia, were investigated and documented. A total of 33 samples were collected across the various degree of dolomitization and analyzed for their petrographic properties (n = 55), while mineralogical and geochemical compositions (n = 33) were analyzed using XRD, ICP and ICPMS analysis, respectively. These analyses were performed to elucidate the diagenetic events, episodic dolomitization and development of fluid evolution as a function of regional tectono-thermal events during the Permian to Cenozoic. It is interpreted that the host calcareous mudstones (HCMs) were deposited in oxygenated, open marine seawaters. The studied samples retain the original seawater characteristics despite negligible, minor alterations of REE characteristics due to diagenesis and detrital input. Though the concentrations and trends of REEs of the dolomitic facies are modified to a certain extent, their affinities with HCMs are preserved. Enrichments of Mg, Mn, Na and depletion of Sr are linked to the effect of dolomitization under the open system of diagenesis. The redox conditions fluctuated to show distinct, recognizable variations between different dolomite phases. The MREE enrichments with other trace elements such as Mn, Fe and low Sr content indicate the association of diagenetic fluids with deep-circulating crustal hydrothermal fluids. Hydrothermal influence has been recorded along the fractures, which might have originated from the sub-surface litho units and facilitated episodic dolomitization, especially during significant tectono-thermal events. This study affirms that the occurrence, geochemical and mineralogical evolution of the dolomites of the Kinta Valley were controlled by magmatic events, whereas the intensity of replacement dolomitization was controlled by host rock texture, varied bulk chemistry of host rock, circulating fluid and temperature.

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“…We assume the Rajang Groups was originally horizontal with a thickness of 5 km (Haile, 1973;Pieters and Sanyoto, 1993;Honza et al, 2000). Volume of denudation (1014m3) =_ _area × _amount of uplift based on apatite fission track data (Kr¨ahenbuhl, 1991;Moss and Carter, 1996;Racey et al, 1997;Carter et al, 2000;Cottam et al, 2013;Fyhn et al, 2016;François et al, 2017;Jonell et al, 2017;Sautter et al, 2019). The Schwaner Mountains data record the highest rock uplift rates known within Sundaland.…”

Section: U-pb Geochronologymentioning

confidence: 99%