Structure of the Earth’s crust and tectonic evolution history of the Southern Indian Ocean (Antarctica)

Leitchenkov, G.; Guseva, Yu. B.; Gandyukhin, V.; Иванов, С. В.; Safonova, L. V.

doi:10.1134/s001685211401004x

Cited by 29 publications

(16 citation statements)

References 20 publications

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“…Estimates of the amplitude of present-day free air gravity anomalies in the region (Fig. 3A) support this assumption (Llubes et al, 2003;Leitchenkov et al, 2014).…”

Section: Discussionmentioning

confidence: 64%

“…The eastern margin of Antarctica ( Fig. 1) was formed during Middle Jurassic to Late Cretaceous rifting and subsequent separation of Australia from Antarctica in the Late Cretaceous -Paleocene (Tikku and Cande, 1999;Direen et al, 2011;Leitchenkov et al, 2014). Seismic data and bottom sampling in the Bremer subbasin, located in the conjugate passive margin offshore SW Australia (Fig.…”

Section: Structure and Evolution Of The Mawson Sea Basinmentioning

confidence: 99%

“…3). The oceanic basin between Antarctica and Australia is represented by an outer zone of ultra-slow seafloor spreading and an inner zone of relatively rapid spreading (Leitchenkov et al, 2014;Williams et al, 2019). Of the nine pseudo-wells considered in this paper, eight are located within the domain of stretched continental crust and the ninth in the COT zone ( Fig.…”

Section: Structure and Evolution Of The Mawson Sea Basinmentioning

confidence: 99%

“…2A) was converted to a depth section (Fig. 2B) using stacking velocities in Leitchenkov et al (2007aLeitchenkov et al ( , 2014. Input data for the modelling included NUMERICAL MODELLING OF THE AUSTRALIA -ANTARCTICA CONJUGATE MARGINS USING THE GALO SYSTEM: PART 2.…”

Section: Introductionmentioning

confidence: 99%

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Numerical Modelling of the Australia – Antarctica Conjugate Margins Using the Galo System: Part 2. Thermal and Maturation History of the Mawson Sea Basin, East Antarctica

Galushkin

Leitchenkov

Dubinin

2020

Journal of Petroleum Geology

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The thermal evolution of the Mawson Sea Basin, offshore East Antarctic, was modelled using the GALO basin modelling programme. As there exist no deep temperature or vitrinite reflectance data for the Mawson Sea Basin, the simulation was based on a limited nonthermal database. This includes the present‐day sedimentary section along a multichannel seismic profile which crosses the western part of the Mawson Sea along with geophysical assessments of the depth of the Moho. An analysis of the variations in tectonic subsidence was used to estimate the duration and magnitude of thermal activation or stretching of the lithosphere. This analysis suggested that a proportion of the lithospheric stretching took place before the start of synrift sediment deposition at about 160 Ma (Late Jurassic). This pre‐sedimentation lithospheric stretching has been ignored in previous studies, resulting in significant underestimation of the total stretching which has occurred. The analysis also suggests that the thermal maturity of Lower Jurassic potential source rocks along the profile may reach and even exceed the onset of the oil generation window, whereas source rocks in less deeply buried parts of the profile are less mature. In general, the results of the modelling indicate that the Mawson Sea Basin is a promising area for future oil and gas exploration.

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“…Estimates of the amplitude of present-day free air gravity anomalies in the region (Fig. 3A) support this assumption (Llubes et al, 2003;Leitchenkov et al, 2014).…”

Section: Discussionmentioning

confidence: 64%

Section: Structure and Evolution Of The Mawson Sea Basinmentioning

confidence: 99%

Section: Structure and Evolution Of The Mawson Sea Basinmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Numerical Modelling of the Australia – Antarctica Conjugate Margins Using the Galo System: Part 2. Thermal and Maturation History of the Mawson Sea Basin, East Antarctica

Galushkin

Leitchenkov

Dubinin

2020

Journal of Petroleum Geology

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“…Antarctic marginal basins such as those in the Weddell and Riiser-Larsen seas, or off the Wilkes Land margin and in Prydz Bay, hold vast volumes of glacial sediments that have been delivered to them by (paleo) ice streams with huge drainage catchments (Kuvaas et al 2004;Close et al 2007;Leitchenkov et al 2007Leitchenkov et al , 2008Leitchenkov et al , 2014Huang et al 2014). In contrast, only a relatively minor sediment volume, depicted with a maximum thickness of just 1800 m, is preserved in the Lazarev Sea and southwest DML margin (Figs.…”

Section: Discussion Basin Sedimentation Processesmentioning

confidence: 96%

Sedimentation and potential venting on the rifted continental margin of Dronning Maud Land

Huang

Jokat

2016

Mar Geophys Res

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The relief of Dronning Maud Land (DML), formed by Middle and Late Mesozoic tectonic activity, had a strong spatial control on the early fluvial and subsequent glacial erosion and deposition. The sources, processes, and products of sedimentation along the DML margin and in the Lazarev Sea in front of the DML mountains have been barely studied. The onshore mountain belt parallel to the coast of the DML margin acts as a barrier to the transport of terrigenous sediments from the east Antarctic interior to the margin and into the Lazarev Sea. Only the Jutul-Penck Graben system allows a localized ice stream controlled transport of material from the interior of DML across its old mountain belt. Offshore, we attribute repeated largescale debris flow deposits to instability of sediments deposited locally on the steep gradient of the DML margin by high sediment flux. Two types of canyons are defined based on their axial dimensions and originated from turbidity currents and slope failures during glacial/fluvial transport. For the first time, we report pipe-like seismic structures in this region and suggest that they occurred as consequences of volcanic processes. Sedimentary processes on the DML margin were studied using seismic reflection data and we restricted the seismic interpretation to the identification of major seismic sequences and their basal unconformities.

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The crustal structure of the Enderby Basin, East Antarctica

et al. 2018

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Structure of the Earth’s crust and tectonic evolution history of the Southern Indian Ocean (Antarctica)

Cited by 29 publications

References 20 publications

Numerical Modelling of the Australia – Antarctica Conjugate Margins Using the Galo System: Part 2. Thermal and Maturation History of the Mawson Sea Basin, East Antarctica

Numerical Modelling of the Australia – Antarctica Conjugate Margins Using the Galo System: Part 2. Thermal and Maturation History of the Mawson Sea Basin, East Antarctica

Sedimentation and potential venting on the rifted continental margin of Dronning Maud Land

The crustal structure of the Enderby Basin, East Antarctica

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