Late mesozoic to cenozoic tectonic events in volcanic arc, West Burma Block: Evidences from U-Pb zircon dating and apatite fission track data of granitoids

Li, Renyuan; Mei, Lianfu; Zhu, Guang; Zhao, Rumin; Xu, Xiaoming; Zhao, Houxiang; Zhang, Peng; Yin, Yipeng; Ma, Yixing

doi:10.1007/s12583-013-0349-7

Cited by 23 publications

(7 citation statements)

References 45 publications

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“…, ) and apatite fission track ages of 23 Ma (Li et al . ) for metamorphic and foliated intrusive rocks from the MMB probably represent the cooling stage, which occurred after peak metamorphism. Geochronology results and structural analysis combined led Bertrand et al .…”

Section: Discussionmentioning

confidence: 97%

MK‐1 Apatite: A New Potential Reference Material for (U‐Th)/He Dating

Shi

Danišík

et al. 2019

Geostandard Geoanalytic Res

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The (U‐Th)/He dating technique has been widely used for several decades to constrain the timing of low temperature geological processes. Recent research has shown that the commonly used reference material (the Durango apatite) often yields dispersed fragment dates that are beyond analytical uncertainties. Here, we report a new apatite (U‐Th)/He dating reference material, MK‐1, which was collected from the Mogok metamorphic belt in Burma. Electron probe microanalysis and backscattered electron images of two randomly selected fragments indicate that this apatite is chemically and structurally homogeneous. We performed single‐grain (U‐Th)/He dating on thirty randomly selected fragments of this material. (U‐Th)/He dating results from multiple laboratories show that fragments of the MK‐1 apatite megacryst yielded reproducible results, with a mean date of 18.0 ± 0.2 Ma. The Th/U ratio of this apatite is homogeneous. Nine randomly selected fragments registered a narrow range of effective uranium (eU) mass fractions (326–354 μg g−1), with a mean value of 336.6 ± 10.3 μg g−1. Twenty‐four in situ (U‐Th)/He dates yielded a mean value of 18.0 ± 0.2 Ma (MSWD = 0.41), indistinguishable from the results obtained by the conventional method. All the results suggest that this apatite has the potential to become a new reference material for (U‐Th)/He geochronology.

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Section: Discussionmentioning

confidence: 97%

MK‐1 Apatite: A New Potential Reference Material for (U‐Th)/He Dating

Shi

Danišík

et al. 2019

Geostandard Geoanalytic Res

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“…At the second time node of ∼34‐32 Ma, the southeastern Tibetan Plateau and its edge have been uplifted to ultimate elevation of ∼3.9 km, and subsequently the latitudinal crustal shortening within the Tibetan Plateau was mainly accommodated by the northern Tibetan Plateau (Liu‐Zeng et al., 2018; Su et al., 2019; Tong et al., 2017). Since the third time node of ∼29 ± 1 Ma, the Indian Plate began to subduct obliquely beneath the West Burma Block, representing by rapid uplift‐cooling of volcanic arcs in the north West Burma Block (R. Y. Li et al., 2013), which dragged the West Burma Block to move northwards. Since the fourth time node of ∼28‐26 Ma, the northbound Indian Plate and West Burma Block began to indent into the Eastern Himalayan orogenic belt to form the EHS.…”

Section: Discussionmentioning

confidence: 99%

“…Since the third time node of ∼29 ± 1 Ma, the Indian Plate began to subduct obliquely beneath the West Burma Block, representing by rapid uplift-cooling of volcanic arcs in the north West Burma Block (R. Y. Li et al, 2013), which dragged the West Burma Block to move northwards. Since the fourth time node of ∼28-26 Ma, the northbound Indian Plate and West Burma Block began to indent into the Eastern Himalayan orogenic belt to form the EHS.…”

Section: Tectonic Evolution Of the Southeastern Edge Of The Tibetan Plateau Since ∼40 Mamentioning

confidence: 99%

Crustal Clockwise Rotation of the Southeastern Edge of the Tibetan Plateau Since the Late Oligocene

et al. 2021

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Figure 1a). Oblique-subduction of the Indian Plate beneath the West Burma Block, southeastern Tibetan Plateau uplifting, formation of the EHS, crustal lateral extrusion and clockwise rotation, and tectonic evolution of strike-slip fault systems are major Cenozoic tectonic events of Southeast Asia. The coherent compression between the Indian Plate and Eurasia was suggested to provide the driving force for significant crustal clockwise rotational extrusion from the southeastern Tibetan Plateau, which controlled the Cenozoic tectonic evolution of strike-slip faults systems in

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“…Furthermore, it corresponds to a basin‐wide late Oligocene angular unconformity on seismic lines (Zhang et al, 2017). The unconformity is coeval with pronounced exhumation in the IBR (Najman et al, 2020) as well as in the northern segment of the WPA (Li et al, 2013; Zhang et al, 2017, 2019), indicative of a major deformation event. This period is a time of important regional deformation and drainage reorganization across the entire Himalayan orogen, particularly around the Eastern Himalayan Syntaxis (Garzanti, 2019; Godin et al, 2006; Haproff et al, 2019; Kellett et al, 2013; Najman et al, 2019; Vannay et al, 2004), leading to the development of the modern Himalayan drainage systems (Bracciali et al, 2015).…”

Section: Implications For Regional Tectonic Evolutionmentioning

confidence: 99%

“…Therefore, we propose that the latest Oligocene to early Miocene unconformity constrained by this study is the result of this indentation, enhancing orogenic build‐up at the collision front, with shortening within the BT and potential underthrusting of the Greater Burma region. This caused major uplift and exhumation in the Eastern Himalayan orogen and the BT, notably the MMMB and the WPA (Godin et al, 2006; Kellett et al, 2013; Li et al, 2013; Najman et al, 2019; Zhang et al, 2017), providing the dual sourcing of the Letkat Formation. Interestingly, plate reconstructions show a similar timing of southeast‐directed extrusion of tectonic blocks away from the Eastern Himalayan Syntaxis, such as the Tengchong and Baoshan blocks (Li et al, 2018; Tong et al, 2013; Westerweel et al, 2019).…”

Section: Implications For Regional Tectonic Evolutionmentioning

confidence: 99%

Burma Terrane Collision and Northward Indentation in the Eastern Himalayas Recorded in the Eocene‐Miocene Chindwin Basin (Myanmar)

et al. 2020

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The Burma Terrane (Myanmar) played an important role in the India-Asia collision and moved over 2,000 km northward on the Indian Plate during the Cenozoic, before colliding with the Asian margin. However, the timing of this collision and its correlation to regional uplift phases, sedimentary provenance, and basin development remain poorly constrained. We report sedimentological, paleomagnetic, and geochronological data from the late Eocene to early Miocene strata of the Chindwin Basin in the Burmese forearc, constraining the paleogeographic evolution of the Burma Terrane and the Eastern Himalayan orogen. Our results highlight two unconformities of late Eocene-middle Oligocene and latest Oligocene-early Miocene age, revealing a two-stage interaction of the Burma Terrane with the Asian margin during its northward translation. The first unconformity follows rapid~0.6 m/ky subsidence in the Burmese forearc, as shown by magnetostratigraphy. The transition to a fluvial depositional environment and the occurrence of reworked sediments at this first unconformity likely records the commencing collision of India and the northern extent of the Burma Terrane with the Asian margin. The second unconformity shows drastic changes in magnetic properties, mineralogy, and provenance, with high-grade metamorphic grains and early Miocene apatite U-Pb and fission-track ages indicating that it is coeval to a major deformation phase in Myanmar and the Eastern Himalayan orogen. It likely records the indentation of the Burma Terrane into the Eastern Himalayan collision zone, forming the modern Eastern Himalayan Syntaxis.

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Late mesozoic to cenozoic tectonic events in volcanic arc, West Burma Block: Evidences from U-Pb zircon dating and apatite fission track data of granitoids

Cited by 23 publications

References 45 publications

MK‐1 Apatite: A New Potential Reference Material for (U‐Th)/He Dating

MK‐1 Apatite: A New Potential Reference Material for (U‐Th)/He Dating

Crustal Clockwise Rotation of the Southeastern Edge of the Tibetan Plateau Since the Late Oligocene

Burma Terrane Collision and Northward Indentation in the Eastern Himalayas Recorded in the Eocene‐Miocene Chindwin Basin (Myanmar)

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