Gamburtsev Subglacial Mountains: Age and composition from morainal clasts and U–Pb and Hf-isotopic analysis of detrital zircons in the Lambert Rift, and potential provenance of East Gondwanaland sediments

Veevers, J. J.

doi:10.1016/j.earscirev.2018.03.002

Cited by 14 publications

(13 citation statements)

References 176 publications

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“…Haines et al, 2013). An alternative hypothesis is that the 700-500 Ma zircon population is directly derived from Antarctica (Cawood and Nemchin, 2000;Veevers, 2018). A comparison of the Hfisotopic array for similar-age detrital zircons in Permian-Triassic sandstones (Veevers, 2018) in the Prince Charles Mountains and offshore Prydz Bay (Antarctica) supports this conclusion ( Fig.…”

Section: Methods Data and Provenance From Northeastern Gondwanamentioning

confidence: 80%

“…1), were analyzed for Lu-Hf isotopes by inductively coupled plasma-mass spectrometry (ICP-MS) (see the GSA Data Repository 1 ). Results were compared with data from Paleozoic basins in Western Australia (Haines et al, 2013), Antarctica (Veevers, 2018), and Tibet (Li et al, 2010;Zhu et al, 2011) as well as with data from crystalline rocks in Antarctica (Morrissey et al, 2017) and central (Smithies et al, 2011;Hollis et al, 2013;Kirkland et al, 2013) and southwestern Australia (Smits et al, 2014). Comparison of detrital zircon age spectra from the Northern Carnarvon, Canning, and Offi cer Basins and Tibet (see locations in Figure 1,and in Figure DR1 in the Data Repository) show strikingly consistent threefold peaks in the ranges 1800-1500 Ma, 1250-1000 Ma, and 700-500 Ma (Figs.…”

Section: Methods Data and Provenance From Northeastern Gondwanamentioning

confidence: 99%

“…Our data indicate that detritus in the basins along the Paleo-Tethyan margin of northern Gondwana were fed by two main sediment transport pathways: a south-to-north system with headwaters in mountains in East Antarctica (cf. Cawood and Nemchin, 2000;Veevers, 2018), and a subsidiary network starting in central Australia. Previously published isopach maps from Paleozoic sequences (Mory and Haines, 2013; Fig.…”

Section: Methods Data and Provenance From Northeastern Gondwanamentioning

confidence: 99%

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Long-lived transcontinental sediment transport pathways of East Gondwana

Morón

Cawood

Haines

et al. 2019

Geology

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Few modern sediment dispersal pathways predate the breakup of Pangea. This suggests that river lifespan can be controlled by continental assembly and dispersal cycles, with the longest-lived river systems present during supercontinent regimes. Based on the strikingly similar age spectra and Hf isotopic array extracted from Paleozoic to early Mesozoic sedimentary sequences from the Paleo-Tethyan margin basins, we argue that a long-lived supercontinental-scale system, with headwaters originating in Antarctica, flowed northward to finally debouch on the margin with the Paleo-Tethys Ocean. Channel-belt thickness scaling relationships, which provide an estimate of drainage area, support the notion that this was a supercontinental-scale system. Sediments were eroded from Proterozoic orogenic belts and flanked resistant kernels of Archean cratons. Remnants of this system, which can still be traced today as topographic lows, controlled post-breakup drainage patterns in Gondwanan fragments in Western Australia. We conclude that supercontinental regimes allow sediment dispersal systems to be long-lived, as they provide both an abundant sediment supply, due to erosion of large-scale, collision-related internal mountain systems, and a stable, large-scale configuration that lasts until breakup.

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Section: Methods Data and Provenance From Northeastern Gondwanamentioning

confidence: 80%

Section: Methods Data and Provenance From Northeastern Gondwanamentioning

confidence: 99%

Section: Methods Data and Provenance From Northeastern Gondwanamentioning

confidence: 99%

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Long-lived transcontinental sediment transport pathways of East Gondwana

Morón

Cawood

Haines

et al. 2019

Geology

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“…We therefore incorporate this constraint in our models and force a cooling to near‐surface temperatures ( T = −10–20°C) between 350 and 300 Ma. Using these three fixed constraints, we model three different scenarios to test presence and magnitude of reheating during proposed extensional phases of the Knox Rift in the Late Paleozoic–Triassic (Veevers, 2018), Late Jurassic–Cretaceous (Maritati et al, 2016), and in both of these periods. Accordingly, for these periods we introduce additional constraints permitting temperatures of 30–220°C reflecting near‐surface temperature conditions and maximum temperature limit of He retention in zircon, respectively.…”

Section: Results and Interpretationmentioning

confidence: 99%

“…The timing of extension in the Knox Rift, as well as the age of the sedimentary infill, is poorly known; plate reconstructions overall support a tectonic correlation with the Paleozoic–Mesozoic Perth Basin of western Australia within Gondwana. However, different phases of extension have been proposed in the Late Paleozoic–Triassic coeval with the Lambert Rift and EARS (Veevers, 2018) and during the Late Jurassic–Cretaceous separation of India from East Gondwana (Maritati et al, 2016).…”

Section: The Bunger Hills Regionmentioning

confidence: 99%

Pangea Rifting Shaped the East Antarctic Landscape

et al. 2020

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East Antarctica remains one of the few continental regions on Earth where an understanding of the origin and causal processes responsible for topographic relief is largely missing. Low‐temperature thermochronology studies of exposed Precambrian basement revealed discrete episodes of cooling and denudation during the Paleozoic–Mesozoic; however, the significance of these thermal events and their relationship to topography across the continental interior remains unclear. Here we use zircon and apatite (U‐Th)/He thermochronology to resolve the low‐temperature thermal evolution of a poorly exposed section of East Antarctic basement in the Bunger Hills region and gain insights into the chronology and style of landscape evolution across East Antarctica. Thermal history modeling results indicate that Precambrian basement in the Bunger Hills region experienced a distinct cooling episode during the Late Paleozoic–Triassic, which we relate to ~2–4 km of regional exhumation associated with intracontinental rifting, followed by a second episode of localized cooling and ≤1 km exhumation during the Late Jurassic–Cretaceous separation of India from East Gondwana. These findings, combined with existing thermochronological and tectonic evidence, support a continent‐scale denudation event associated with uplift and exhumation of large sections of Precambrian basement during Late Paleozoic–Triassic Pangea‐wide intracontinental extension. By contrast, continental extension associated with the Jurassic–Cretaceous breakup of East Gondwana resulted in significant denudation only locally in regions west of the Bunger Hills. We propose that the combined effects of these Paleozoic–Mesozoic tectonic events had a profound impact on the topography across the East Antarctic interior and influenced the long‐term landscape evolution of East Antarctica.

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Evincing the presence of a trans‐Gondwanian mobile belt in the interior of the Princess Elizabeth Land, East Antarctica: insights from offshore detrital sediments, rock fragments, and monazite geochronology

et al. 2022

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East Gondwana was assembled through the stitching of the Indo‐Antarctica and Australo‐Antarctica domains which also represents the key Gondwana‐forming regions in present‐day East Antarctica. However, the Indo‐Antarctica and Australo‐Antarctica boundaries remain speculative and contentious, as the thick Antarctic Ice sheet precludes direct geological characterization of these terranes. In addition, the exact role of the Gamburtsev Subglacial Mountains, present in the interior of Princess Elizabeth Land (PEL), during the amalgamation of Gondwana, has not been well understood. We present new mineralogical data of offshore sediments from Prydz Bay to infer the geology of the interior of the PEL terrain, East Antarctica. Coast marginal outcrops dominantly expose igneous and granulite facies metamorphic rocks. Heavy minerals characterization of the rock fragments followed by consideration of the outcrop geology indicate a possible contribution of sediments from the far interior of PEL terrain. Total U–Pb chemical geochronology of detrital monazites dominantly shows a bimodal age distribution ascribable to Stenian to Tonian (~1,100 Ma, 900 Ma) event ages and a younger Pan‐African event (~500 Ma). Besides these, Tonian‐Cryogenian (~700 Ma) ages from texturally constrained monazites of a low‐grade schist rock fragment is reported for the first time from this sector. Consideration of glacial flow directions and the nature of rock fragments indicate their sourcing from the distal hinterland. The possible provenance is inferred to be from the Gamburtsev Subglacial Mountains.

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Gamburtsev Subglacial Mountains: Age and composition from morainal clasts and U–Pb and Hf-isotopic analysis of detrital zircons in the Lambert Rift, and potential provenance of East Gondwanaland sediments

Cited by 14 publications

References 176 publications

Long-lived transcontinental sediment transport pathways of East Gondwana

Long-lived transcontinental sediment transport pathways of East Gondwana

Pangea Rifting Shaped the East Antarctic Landscape

Evincing the presence of a trans‐Gondwanian mobile belt in the interior of the Princess Elizabeth Land, East Antarctica: insights from offshore detrital sediments, rock fragments, and monazite geochronology

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