The composite magnetic anomaly map of the East Antarctic

Golynsky, Alexander; Alyavdin, S.; Masolov, V. N.; Tscherinov, A.S; Volnukhin, Vyacheslav S.

doi:10.1016/s0040-1951(01)00240-2

Cited by 44 publications

(39 citation statements)

References 19 publications

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“…The results of this high-resolution survey confirm the utility of aerogeophysics when studying glaciated continental rifts, thereby expanding on previous case studies over the West Antarctic Rift System (Behrendt, 1999), the Transantarctic Mountains and Marie Byrd Land rift flanks (Ferraccioli and Bozzo, 1999;Ferraccioli et al, 2001;Ferraccioli et al, 2002a), and the Lambert Rift (Golynsky et al, 2002).…”

Section: High-resolution Aerogeophysics Over Dronningsupporting

confidence: 75%

“…eastern arc, therefore causing the 107-103 Ma deformation observed over Palmer Land . The results of this survey show the utility of aerogeophysics for Mesozoic terrane studies in Antarctica, in addition to previously investigated Paleozoic (Finn et al, 1999;Ferraccioli et al, 2002b) and Precambrian terranes (Golynsky et al, 2002).…”

Section: Aerogeophysical Survey Over Palmer Land: a New Case Study Fosupporting

confidence: 64%

“…Radio-echo sounding data revealed the deep subglacial trench where the Jutulstraumen Ice Stream flows. Figure 2 shows a new aeromagnetic map obtained by combining the recent high-resolution survey data (Ferraccioli et al, 2005a) with the previous regional ADMAP grid (Golynsky et al, 2002). Crustal thickness estimates obtained by 3D inversion of airborne gravity data are also superimposed (Ferraccioli et al, 2005b).…”

Section: High-resolution Aerogeophysics Over Dronningmentioning

confidence: 99%

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Airborne geophysics as a tool for geoscientific research in Antarctica: some recent examples

Ferraccioli

Jones²,

Leat³

et al. 2007

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The polar regions play an important role in Earth's geodynamic and climatic systems. Modern airborne geophysical surveys combine radio-echo sounding, aeromagnetic and aerogravity methods to explore the geology of these regions. This paper reviews some recent aerogeophysical investigations undertaken by the British Antarctic Survey to: 1) Image subglacial rifts of Jurassic age in western Dronning Maud Land, which were associated with early Gondwana break-up; 2) Investigate crustal growth over the Antarctic Peninsula by Cretaceous arc magmatism and terrane accretion along the paleo-Pacific margin of Gondwana; 3) Analyse geological boundary conditions for presentday ice dynamics over Coats Land.

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Section: High-resolution Aerogeophysics Over Dronningsupporting

confidence: 75%

Section: Aerogeophysical Survey Over Palmer Land: a New Case Study Fosupporting

confidence: 64%

Section: High-resolution Aerogeophysics Over Dronningmentioning

confidence: 99%

See 1 more Smart Citation

Airborne geophysics as a tool for geoscientific research in Antarctica: some recent examples

Ferraccioli

Jones²,

Leat³

et al. 2007

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“…This geomagnetic domain has an abrupt north -south trending termination against a region of positive magnetic anomalies, just east of the Yamato Mountains, that corresponds exactly to the terrane boundary between the Sør Rondane Mountains and Yamato-Belgica Complex and the Lützow-Holm Complex inferred by Shiraishi et al However, in other key areas of Late Neoproterozoic geological activity, especially around Prydz Bay and Lützow-Holm Bay, there is a significant discrepancy between the latest tectonic models made on the basis of surface geology (field geology, petrography and geochronology) and geophysics (aeromagnetic mapping). Golynsky et al (2002) and Golynsky (2007) suggested that the presence of intense east -west linear anomalies, which extend across the Lambert Graben from the northern Prince Charles Mountains to Prydz Bay, and from the southern Prince Charles Mountains to the Grove Mountains, implies a tectonic association of these areas that predates late Neoproterozoic activity in the region. These features were associated by Golynsky (2007) with paired eastwest-trending belts of negative and positive anomalies that extend from Prydz Bay to Lützow-Holm Bay, where the boundaries of these belts rotate into a trend perpendicular to the Prince Olav Coast.…”

Section: Geophysical Studiesmentioning

confidence: 99%

Geosciences research in East Antarctica (0°E–60°E): present status and future perspectives

Satish-Kumar

Hokada

Kawakami

et al. 2008

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In both palaeoenvironmental and palaeogeographical studies, Antarctica plays a unique role in our understanding of the history of the Earth. It has maintained a unique geographical position at the South Pole for long periods. As the only unpopulated continent, the absence of political barriers or short-term economic interests has allowed international collaborative science to flourish. Although 98% of its area is covered by ice, the coastal Antarctic region is one of the wellstudied regions in the world. The integrity and success of geological studies lies in the fact that exposed outcrops are well preserved in the low-latitude climate. The continuing programme of the Japanese Antarctic Research Expedition focuses on the geology of East Antarctica, especially in the Dronning Maud Land and Enderby Land regions. Enderby Land preserves some of the oldest Archaean rocks on Earth, and the Mesoproterozoic to Palaeozoic history of Dronning Maud Land is extremely important in understanding the formation and dispersion of Rodinia and subsequent assembly of Gondwana. The geological features in this region have great significance in defining the temporal and spatial extension of orogenic belts formed by the collision of proto-continents. Present understanding of the evolution of East Antarctica in terms of global tectonics allows us to visualize how continents have evolved through time and space, and how far back in time the present-day plate-tectonic regime may have operated. Although several fundamental research problems still need to be resolved, the future direction of geoscience research in Antarctica will focus on how the formation and evolution of continents and supercontinents have affected the Earth's environment, a question that has been addressed only in recent years.

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“…The investigation of the character of flood basalt magmatism in Antarctica, which was performed within the MAMOG Project (Leat et al, 2007), confirmed that it lasted for at least 20-30 Ma, when a series of dikes and flows were formed around the plume center over an area of about 145 000 km 2 along the Antarctic coast (DML). The eastward spreading of the Karoo-Maud plume can be indirectly supported by the existence of a large basic intrusion, which extends along the DML coast and is marked by a high-amplitude (×100 nT) magnetic anomaly (Golynsky et al, 2002(Golynsky et al, , 2006. Figure 11 shows the possible eastward direction of plume head spreading in the sublithospheric mantle of Gondwana at 130 Ma.…”

Section: Discussionmentioning

confidence: 93%