Locating the Indo-Antarctica suture – Correlating the Rengali, Rauer and Ruker terranes in Gondwana

Gupta, Saibal; Chatterjee, S.R.; Arora, Devsamridhi; Bose, Shamik; Dobe, Ritabrata

doi:10.1016/j.polar.2021.100689

Cited by 15 publications

(3 citation statements)

References 118 publications

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“…Geographically, the suture may extend further to the Prince Charles Mountain, Dronning Maud Land, and the Gamburtsev Subglacial Mountains (Fitzsimons, 2003) (Figure 1b). Gupta et al (2021) proposed the Indo-Antarctica suture (Figure 1a) coincides with the Pan-African Kuunga suture (Arora et al, 2020;Boger et al, 2001), which connects the southern Prince Charles Mountain with coastal outcrops of Prydz Bay through the Grove Mountains (Xiaohan Liu et al, 2003), and represents the easternmost boundary of the Kuunga Orogen. However, these hypothesis have not been fully examined by Geophysical investigations, which play a crucial role in understanding the origins of continental suture zones (Burtman & Molnar, 1993).…”

Section: Introductionmentioning

confidence: 99%

Geophysical Evidence of the Collisional Suture Zone in the Prydz Bay, East Antarctica

Fu,

Guo,

Shen

et al. 2023

Preprint

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The location and origin of Neoproterozoic-Cambrian sutures provide keys to understand the formation and evolution of the supercontinent Gondwana. The Larsemann Hills is located near a major Neoproterozoic-Cambrian suture zone in the Prydz Belt, but has not been examined locally by comprehensive geophysical studies. In this study, we analyzed data collected from a 1-D joint seismic-MT array deployed during the 36th Chinese National Antarctic Research Expedition. We found that a sharp Moho discontinuity offset of 6-8 km shows up in the stacked image of teleseismic P-wave receiver function analysis; coinciding with the abrupt Moho offset, a near-vertical channel with (1) low resistivity extending to the uppermost mantle depths, and (2) a high crustal Poisson’s ratio in the crust is identified. These findings provide evidence for the determination of the location and collisional nature of the Prydz belt or a portion of it.

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Section: Introductionmentioning

confidence: 99%

Geophysical Evidence of the Collisional Suture Zone in the Prydz Bay, East Antarctica

Fu,

Guo,

Shen

et al. 2023

Preprint

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show abstract

“…Gupta et al. (2021) proposed the Indo‐Antarctica suture (Figure 1a) coincides with the Pan‐African Kuunga suture (Arora et al., 2020; Boger et al., 2001), which connects the southern Prince Charles Mountain with coastal outcrops of Prydz Bay through the Grove Mountains (Liu et al., 2003), and represents the easternmost boundary of the Kuunga Orogen. However, these hypothesis have not been fully examined by Geophysical investigations, which play a crucial role in understanding the origins of continental suture zones (Burtman & Molnar, 1993).…”

Section: Introductionmentioning

confidence: 99%

“…(a) Geological sketch map of the Prydz Belt and adjacent areas, the black dashed curve indicates the Indo‐Antarctica suture zone proposed by Gupta et al. (2021), (b) showing its location in the reconstruction of Gondwana at circa 500 Ma (Modified after Kelsey et al. (2008)), (c) the short‐period seismometers (brown triangles) and MT stations (yellow triangles) deployed in the Larsemann Hills, Prydz Bay, during CHINARE36.…”

Section: Introductionmentioning

confidence: 99%

Geophysical Evidence of the Collisional Suture Zone in the Prydz Bay, East Antarctica

Fu,

Guo,

Shen

et al. 2024

Geophysical Research Letters

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The location and origin of Neoproterozoic‐Cambrian sutures provide keys to understand the formation and evolution of the supercontinent Gondwana. The Larsemann Hills is located near a major Neoproterozoic‐Cambrian suture zone in the Prydz Belt, but has not been examined locally by comprehensive geophysical studies. In this study, we analyzed data collected from a one‐dimensional (1D) joint seismic‐MT array deployed during the 36th Chinese National Antarctic Research Expedition. We found that a sharp Moho discontinuity offset of 6–8 km shows up in the stacked image of teleseismic P‐wave receiver function analysis; coinciding with the abrupt Moho offset, a near‐vertical channel with (a) low resistivity extending to the uppermost mantle depths, and (b) high crustal Poisson's ratio in the crust is identified. These findings provide evidence for the determination of the location and collisional nature of the Prydz belt or a portion of it.

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Evidence of a Proterozoic suture along the southern part of Eastern Ghats Mobile Belt: Implications for the Nuna supercontinent

Giri,

Radhakrishna,

Betts

et al. 2024

J Earth Syst Sci

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Locating the Indo-Antarctica suture – Correlating the Rengali, Rauer and Ruker terranes in Gondwana

Cited by 15 publications

References 118 publications

Geophysical Evidence of the Collisional Suture Zone in the Prydz Bay, East Antarctica

Geophysical Evidence of the Collisional Suture Zone in the Prydz Bay, East Antarctica

Geophysical Evidence of the Collisional Suture Zone in the Prydz Bay, East Antarctica

Evidence of a Proterozoic suture along the southern part of Eastern Ghats Mobile Belt: Implications for the Nuna supercontinent

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