Crustal structure and tectonic provinces of the Riiser-Larsen Sea area (East Antarctica): results of geophysical studies

@article{Leitchenkov2008CrustalSA,
  title={Crustal structure and tectonic provinces of the Riiser-Larsen Sea area (East Antarctica): results of geophysical studies},
  author={German L Leitchenkov and J. Guseva and V. V. Gandyukhin and Garrik E. Grikurov and Yngve Kristoffersen and Morten Sand and Alexander V. Golynsky and N. D. Aleshkova},
  journal={Marine Geophysical Researches},
  year={2008},
  volume={29},
  pages={135-158}
}
About 16,000 km of multichannel seismic (MCS), gravity and magnetic data and 28 sonobuoys were acquired in the Riiser-Larsen Sea Basin and across the Gunnerus and Astrid Ridges, to study their crustal structure. The study area has contrasting basement morphologies and crustal thicknesses. The crust ranges in thickness from about 35 km under the Riiser-Larsen Sea shelf, 26–28 km under the Gunnerus Ridge, 12–17 km under the Astrid Ridge, and 9.5–10 km under the deep-water basin. A 50-km-wide… 

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References

SHOWING 1-10 OF 40 REFERENCES

A seismo-stratigraphic analysis of glaciomarine deposits in the eastern Riiser-Larsen Sea (Antarctica)

Multichannel seismic data from the eastern parts of the Riiser-Larsen Sea have been analyzed with a sequence stratigraphic approach. The data set covers a wide bathymetric range from the lower

A Compilation of Geophysical Data from the Lazarev Sea and the Riiser-Larsen Sea, Antarctica

On the basis of new geophysical data acquired by the Federal Institute of Geosciences and Natural Resources (BGR) and the Polar Marine Geological Research Expedition (PMGRE) as well as existing data

The development of the crust off Dronning Maud Land, East Antarctica

Abstract The southern Astrid Ridge and the Gunnerus Ridge together with the Kainan Maru Seamount are continental fragments which delimit the oceanic crust of the Riiser-Larsen Sea off Dronning Maud

Deep structure of the U.S. Atlantic continental margin, offshore South Carolina, from coincident ocean bottom and multichannel seismic data

We present the results of a combined multichannel seismic reflection (MCS) and wide-angle, ocean bottom seismic profile collected in 1988 across the Carolina Trough on the U.S. Atlantic continental

Plate tectonic development of the south west Indian Ocean: A revised reconstruction of East Antarctica and Africa

A revised sequence of reconstructions for East Antarctica relative to Africa is generated from published seafloor spreading and fracture zone anomalies. These date from the Cretaceous/Tertiary

The continent‐ocean boundary at the rifted margin off eastern Canada: New results from deep seismic reflection studies

Seismic reflection data were collected and processed to 20 s two-way travel time along four lines which cross the rifted continent-ocean boundary off the Grand Banks region of eastern Canada

Cenozoic environmental changes along the East Antarctic continental margin inferred from regional seismic stratigraphy

We interpret ~40 000 km of multichannel seismic reflection lines collected by the Russian Antarctic Expedition along the East Antarctic continental margin between 32E and 115E, and present a revised

Underlying fracture zone nature of Astrid Ridge off Antarctica's Queen Maud Land

New geophysical data are used to refine the extent and setting of Astrid Ridge, a volcanic edifice lying off the Princess Astrid Coast section (5°E to 20°E) of Queen Maud Land in Antarctica. New

Mesozoic sea floor off Dronning Maud Land, Antarctica

THE accreting margin between the African and Antarctic plates is now well understood between the Bouvet triple junction and Marion Island (Fig. 1). Published data obtained from the ridge axis near