Occurrence of the high grade Thabsila metamorphic complex within the low grade Three Pagodas shear zone, Kanchanaburi Province, western Thailand: Petrology and geochronology

Nantasin, Prayath; Hauzenberger, Christoph; Liu, Xiaoming; Krenn, Kurt; Dong, Yunpeng; Thöni, Martin; Wathanakul, P.

doi:10.1016/j.jseaes.2012.07.025

Cited by 34 publications

(29 citation statements)

References 80 publications

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“…Late Palaeocene-Eocene ages of ca. 57-51 Ma have been reported further south from exhumed high-grade gneisses of the Thabsila Complex along the Three Pagodas Fault in western Thailand (Nantasin et al, 2012).…”

Section: Late Eocene-oligocene Metamorphismmentioning

confidence: 97%

Did Oligocene crustal thickening precede basin development in northern Thailand? A geochronological reassessment of Doi Inthanon and Doi Suthep

Gardiner

Morley

Searle

et al. 2016

Lithos

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The Doi Inthanon and Doi Suthep metamorphic core complexes in northern Thailand are comprised of amphibolite-grade migmatitic gneisses mantled by lower-grade mylonites and metasedimentary sequences, thought to represent Cordilleran-style core complexes exhumed through the mobilization of a low-angle detachment fault. Previous studies have interpreted two metamorphic events (Late Triassic and Late Cretaceous), followed by ductile extension between the late Eocene and late Oligocene, a model which infers movement on the detachment at ca. 40 Ma, and which culminates in a rapid unroofing of the complexes in the early Miocene. The Chiang Mai Basin, the largest such Cenozoic Basin in the region, lies immediately to the east. Its development is related to the extension observed at Doi Inthanon and Doi Suthep, however it is not definitively dated, and models for its development have difficulty reconciling Miocene cooling ages with Eocene detachment movement. Here we present new in-situ LA-ICP-MS and SIMS U-Pb age data of zircon and monazite grains from gneiss and leucogranite samples taken from Doi Inthanon and Doi Suthep. Our new zircon data exhibit an older age range of 221-210 Ma, with younger ages of ca. 72 Ma, and 32-26 Ma. Our monazite data imply an older age cluster at 83-67 Ma, and a younger age cluster of 34-24 Ma. While our data support the view of Indosinian basement being reworked in the Cretaceous, they also indicate a late Eocene-Oligocene tectonothermal event, resulting in prograde metamorphism and anatexis. We suggest that this later event is related to localized transpressional thickening associated with sinistral movement on the Mae Ping Fault, coupled with thickening at the restraining bend of the Mae Yuan Fault to the immediate west of Doi Inthanon. Further, this upper Oligocene age limit from our zircon and monazite data would imply a younger Miocene constraint on movement of the detachment, which, when combined with the previously recorded Miocene cooling ages, has implications for a model for the onset of extension and subsequent development of the Chiang Mai Basin in the early mid-Miocene.

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Section: Late Eocene-oligocene Metamorphismmentioning

confidence: 97%

Did Oligocene crustal thickening precede basin development in northern Thailand? A geochronological reassessment of Doi Inthanon and Doi Suthep

Gardiner

Morley

Searle

et al. 2016

Lithos

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“…However, the region where the two strike-slip systems potentially merge is structurally poorly documented. In many geological interpretations the Mae Ping strike-slip zone is extended to the Klaeng fault zone in eastern Thailand (Lacassin et al, 1993(Lacassin et al, , 1997Leloup et al, 1995;Gilley et al, 2003;Geard, 2008;Nantasin et al, 2012), which records ductile sinistral shearing during the Eocene (Kanjanapayont et al, 2013). The Ranong and Khlong Marui shear zones in the southern Thailand extend from the continental margin and Mergui basin to the Gulf of Thailand from W to E (Tapponnier et al, 1986;Lacassin et al, 1997;Charusiri et al, 2002).…”

Section: Geological Settingmentioning

confidence: 99%

“…The Ranong and Khlong Marui shear zones in the southern Thailand extend from the continental margin and Mergui basin to the Gulf of Thailand from W to E (Tapponnier et al, 1986;Lacassin et al, 1997;Charusiri et al, 2002). All four major strike-slip shear zones in Thailand were probably active during the Eocene (Lacassin et al, 1997;Watkinson et al, 2011;Kanjanapayont et al, 2012b;Nantasin et al, 2012;Palin et al, 2013).…”

Section: Geological Settingmentioning

confidence: 99%

“…Lacassin et al, 1997;Palin et al, 2013). In Thailand, syndeformational metamorphic rocks are exposed along the Mae Ping shear, Three Pagodas, Ranong, and Khlong Marui shear zones (Lacassin et al, 1997;Kanjanapayont et al, 2012a;Nantasin et al, 2012;Palin et al, 2013) (Figure 1). In this study we focus on quantitative structural investigations of relatively homogeneously deformed rocks from the Mae Ping shear zone.…”

Section: Introductionmentioning

confidence: 99%

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Quantitative finite strain analysis of high-grade metamorphic rocks within the Mae Ping shear zone, western Thailand

Ponmanee¹,

Kanjanapayont²,

Grasemann³

et al. 2016

AJES

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The NW trending Mae Ping shear zone exposes high-grade metamorphic rocks, the so called Lansang gneiss in the Tak region, western Thailand. The lithologies within the strike-slip zone mainly consist of orthogneisses and paragneisses. Using Fry's method for 2-dimensional strain analysis we find that the averaged finite strain ratio (R s ) of the XY-plane is R s = 1.35-1.69. Based on the kinematic vorticity analysis of the mylonitic gneisses in the shear zone, the kinematic vorticity number is W k = 0.8-1.0 with an average of W k = 0.95. The results imply that the homogeneously deforming rocks within the Mae Ping shear zone have a strong simple shear component with a minor pure shear contribution of about 15 %. The kinematic indictors from both outcrop and micro scopic scales indicate a sinistral strike-slip shear sense. We conclude that the Mae Ping shear zone accommodated crustal scale sinistral transpression.

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“…2), peak metamorphism alongside the Three Pagodas Fault is Paleogene in age and occurred around 57-51 Ma in the Thabsila metamorphic complex ( Fig. 2b; Nantasin et al 2012). This metamorphism was accompanied by widespread I-and S-type granite emplacement in the Western Granite Province from the Late Cretaceous until the Eocene (e.g.…”

Section: Late Mesozoic-cenozoic Tectonic Evolutionmentioning

confidence: 94%

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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Occurrence of the high grade Thabsila metamorphic complex within the low grade Three Pagodas shear zone, Kanchanaburi Province, western Thailand: Petrology and geochronology

Cited by 34 publications

References 80 publications

Did Oligocene crustal thickening precede basin development in northern Thailand? A geochronological reassessment of Doi Inthanon and Doi Suthep

Did Oligocene crustal thickening precede basin development in northern Thailand? A geochronological reassessment of Doi Inthanon and Doi Suthep

Quantitative finite strain analysis of high-grade metamorphic rocks within the Mae Ping shear zone, western Thailand

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

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