Coupled detrital zircon U–Pb and Hf analysis of the Sibumasu Terrane: From Gondwana to northwest Thailand

Dew, Romana E.C.; Collins, Alan S.; Morley, Christopher; King, Robert G.; Evans, Noreen J.; Glorie, Stijn

doi:10.1016/j.jseaes.2021.104709

Cited by 19 publications

(8 citation statements)

References 181 publications

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“…310 to 200 Ma, resulted from the closure of the Paleo-Tethys and Paleo-Pacific oceans in the late Paleozoic and early Mesozoic and led to the formation of much of East Asia (Lepvrier et al, 2004;Morley et al, 2013;Arboit et al, 2016;Gao et al, 2017;Dew et al, 2021). Specifically, the orogeny involves the collision of South China with North China, Indochina with South China, and the Sibumasu Terrane with Indochina and the intervening Sukhothai arc terrane (Arboit et al, 2016;Gao et al, 2017;Dew et al, 2021). It is responsible for the accretion and amalgamation of much of East Asia (Figure 9b).…”

Section: Neoproterozoic To Mesozoic Orogensmentioning

confidence: 99%

New maps of global geologic provinces and tectonic plates

Hasterok¹,

Halpin²,

Collins³

et al. 2022

Preprint

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Accurate spatial models of tectonic plates and geological terranes are important for analyzing and interpreting a wide variety of geoscientific data and developing compositional and physical models of the lithosphere. We present a global compilation of active plate boundaries and geological provinces in a shapefile format with interpretive attributes (e.g., crust type, plate type, province type, last orogeny). The initial plate and province boundaries are constructed from a combination of published global and regional models that we refine using a variety of geoscientific constraints including, but not limited to, relative GPS motions, earthquakes, mapped faults, potential field characteristics, and geochronology. These new plate model show improved correlation to observed earthquake and volcano occurrences within deformation zones and microplates, compared to existing models, capturing 73 and 80% of these criteria, respectively. We estimate 57.7% of the Earth’s surface is covered by oceanic crust, which is a slight increase relative to the most recent seafloor age model. The model of last orogenies agrees well with peaks in the globally summed geochronology data. There is room for improvement in future editions of our global plate and geologic provinces model where basins, ice, or lack of geological data fidelity obscure bedrock geology, particularly in the eastern Central Asian Orogenic Belt, much of Africa, East Antarctica, and eastern Australia. Additionally, some province types—orogens, shields, and cratons that are homogenized within our global scheme—can likely be partitioned into smaller terranes with more precise geodynamic attributes. Despite some of these shortcomings, the digital maps presented here form a self-consistent data standard for adding spatial metadata to geoscientific databases. The database is available on GitHub where the geoscience community can provide updates to improve the models and their contemporaneity as new knowledge is acquired. The files are also released in formats suitable for use in Generic Mapping Tools and GoogleEarth.

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Section: Neoproterozoic To Mesozoic Orogensmentioning

confidence: 99%

New maps of global geologic provinces and tectonic plates

Hasterok¹,

Halpin²,

Collins³

et al. 2022

Preprint

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“…In the SCB, Palaeoproterozoic (2500-2400 Ma) and Mesoproterozoic (1200-1000 Ma) rocks are not or rarely reported, whereas the Palaeozoic strata in the South China and surrounding blocks, such as the Indochina and Sibumasu blocks, contain extensive 2500-2400 and 1200-1000 Ma detrital zircon grains (Xu Y.J. et al 2013;Hu et al 2015a, b;Dew et al 2021). Recently, many researchers conclude that 2500-2400 Ma and 1200-1000 Ma detrital zircons in the South China, Indochina and Sibumasu blocks are mainly derived from the Gondwana based on Lu-Hf isotopes, fossils and palaeomagnetic data.…”

Section: A Provenance Of Upper Triassic and Lower Jurassic Samplesmentioning

confidence: 99%

“…For example, Xu et al (2013b) found that the Hf isotopic compositions of the 1200-900 Ma detrital zircons in the SCB are similar to the contemporaneous Hf isotopic compositions of zircons from northwestern Australia. Dew et al (2019Dew et al ( , 2021 used U-Pb and Hf signatures from Cambro-Ordovician detrital sequences in the Sibumasu Terrane to demonstrate Proterozoic Gondwanan provenance, which is also seen in the SCB. Additionally, the South China, Tarim, North China, Indochina and Sibumasu blocks all have Gondwanan Sino-Australian province faunas in the lower Palaeozoic strata, indicating these blocks were located on northeastern Gondwana adjacent to Australia (Metcalfe, 2011) The c. 1200-1000 Ma zircon grains are commonly found in Silurian-Ordovician sequences (Cawood & Nemchin, 2000;Markwitz et al 2017;Olierook et al 2019).…”

Section: A Provenance Of Upper Triassic and Lower Jurassic Samplesmentioning

confidence: 99%

“…During the Late Triassic period of 220-210 Ma, the SE Asian continental fragments, including South China, Simao, Indochina and East Malaya blocks, consolidated with the Sibumasu and South Qiangtang blocks to form a united continent (Arboit et al 2016;Wang et al 2018;Dew et al 2021). During 210-200 Ma, the Indosinian Orogeny developed into post-collision stages and the orogenic belt began to collapse (Arboit et al 2016;Wang et al 2018), indicating the termination of Indosinian Orogeny.…”

Section: Cawoodmentioning

confidence: 99%

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U–Pb geochronology of Upper Triassic – Lower Jurassic detrital sequences from SE margin of the South China Block: implications for Palaeo-Pacific subduction and tectonic evolution

Kong

Tao

et al. 2022

Geol. Mag.

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We performed U–Pb dating of detrital zircons and conducted petrological and whole-rock geochemical analyses to assess the provenance of the Upper Triassic – Lower Jurassic clastic rocks in the southeastern margin of the South China Block. Detrital zircon U–Pb ages are mainly classified into age groups of 2000–1700, 900–700, 490–390 and 280–210 Ma, consistent with derivation from the Jiangnan orogenic belt, Nanling Belt, as well as Wuyi and Yunkai domains. Lower Jurassic samples yield a special main age population of 200–190 Ma, and these detrital zircon grains have low Th/U and Nb/Hf ratios and high Th/Nb and Hf/Th ratios, showing they are derived from a continental magmatic arc. However, the cross-correlation and likeness coefficients of kernel density estimates of Upper Triassic and Lower Jurassic sandstones are 0.8608 and 0.8403, indicating that their populations are highly similar. Since the tectonic setting is the key factor in controlling the relationship between source and sink, the stable supply of identical provenance suggests that the tectonic setting did not significantly change during Late Triassic – Early Jurassic time. Sandstone petrography, regional facies distribution and the detrital zircon age patterns all reflect a consistent tectonic setting for the South China Block during Late Triassic – Early Jurassic time. The Palaeo-Pacific subduction therefore did not control the tectonic evolution of the South China Block until after the Early Jurassic Epoch.

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“…The sedimentary archives of the foreland basins are extensively analyzed using modern techniques such as U-Pb dating [4][5][6][7][8] to estimate the maximum depositional ages and constrain the sediment provenance. This is a powerful tool in identifying the precise information about the sediment provenance, which is very important in explaining the paleogeographic reconstructions of the terranes in geological history [9][10][11]. Furthermore, this technique has also been widely applied in constraining the timing of orogenic events such as Ophiolite obduction and final collision in the Himalayan orogen [4,10].…”

Section: Introductionmentioning

confidence: 99%

First U-Pb Detrital Zircon Ages from Kamlial Formation (Kashmir, Pakistan): Tectonic Implications for Himalayan Exhumation

et al. 2022

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This study reports the first-ever detrital zircon provenance investigation of sandstones of the Kamlial Formation, exposed in Kashmir Basin along the Kohala–Bagh road section (Muzaffarabad, Pakistan). Analysis of probability density plots of detrital U-Pb zircon ages displayed a major age population clustered around ≈400–1200 Ma and a minor age population clustered around ≈1600–1900 Ma. In addition, scattered ages existed between ≈2000 and 3000 Ma. This age pattern resembled strongly the Himalayan sources, including the Tethys Himalaya, Greater/Higher Himalaya, and Lesser Himalaya. The younger ages (<150 Ma) present in the studied samples indicated the Asian provenance. The Lesser Himalayan component (≈166–1900 Ma) was more pronounced in the 2015KM03 and 2015KM04 samples, representing the middle to the upper portion of the formation. The recycled orogen provenance of the Kamlial Formation as deduced from the sandstone petrography supports the mixed detrital zircon provenance. Considering the provenance, we propose a tectonic model that suggests that large-scale exhumation occurred in the Himalaya as a result of Panjal thrust activation during 25–14 Ma (age of Kamlial Formation), which uplifted the hinterland zone that acted as a source area that fed the foreland basin, where the Kamlial Formation deposited.

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Coupled detrital zircon U–Pb and Hf analysis of the Sibumasu Terrane: From Gondwana to northwest Thailand

Cited by 19 publications

References 181 publications

New maps of global geologic provinces and tectonic plates

New maps of global geologic provinces and tectonic plates

U–Pb geochronology of Upper Triassic – Lower Jurassic detrital sequences from SE margin of the South China Block: implications for Palaeo-Pacific subduction and tectonic evolution

First U-Pb Detrital Zircon Ages from Kamlial Formation (Kashmir, Pakistan): Tectonic Implications for Himalayan Exhumation

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