Distribution patterns and possible influencing factors of As speciation in ornithogenic sediments from the Ross Sea region, East Antarctica

The Tertiary stocks (Meander Intrusives) cropping out along the coasts of the Ross Sea were sampled for a palaeomagnetic study during the sixth Italian expedition to northern Victoria Land. Laboratory investigations concerned magnetic mineralogy and remanent magnetization. Minerals of the magnetiteulvöspinel series occur in the rocks from all stocks, with low-Ti titanomagnetite usually prevalent. Haematite and goethite occur in small amounts as alteration products. Large secondary components commonly screen the characteristic remanent magnetization and were removed by thermal or AF demagnetization at temperatures or peak-fields higher than 360°C and 20 mT respectively. A total of 10 VGPs were obtained from radiometrically dated rocks (42–22 Ma); the averaged position (69°S, 334°E; α95=9.9°) is the first middle Tertiary palaeomagnetic pole for East Antarctica, and gives evidence for a reversal in the course of the APW path. This evidence is not substantially altered by a supposed tilt-correction consistent with geophysical and geological models for the uplift of the Transantarctic Mountains. No definite conclusion about relative movements between East Antarctica and the Antarctic Peninsula can be drawn from the existing palaeomagnetic data.

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Evidence of calcium carbonates in coastal (Talos Dome and Ross Sea area) East Antarctica snow and firn: Environmental and climatic implications

Earth and Planetary Science Letters ◽

10.1016/j.epsl.2008.03.045 ◽

2008 ◽

Vol 271 (1-4) ◽

pp. 43-52 ◽

Cited By ~ 35

Author(s):

M. Sala ◽

B. Delmonte ◽

M. Frezzotti ◽

M. Proposito ◽

C. Scarchilli ◽

...

Keyword(s):

Ross Sea ◽

East Antarctica ◽

Calcium Carbonates ◽

Sea Area

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THE PETROLEUM POTENTIAL OF ANTARCTICA AND ITS CONTINENTAL MARGIN

The APPEA Journal ◽

10.1071/aj80013 ◽

1981 ◽

Vol 21 (1) ◽

pp. 99

Author(s):

P. J. Cameron

Keyword(s):

Continental Margin ◽

Ross Sea ◽

Mineral Resources ◽

Weddell Sea ◽

East Antarctica ◽

Petroleum Exploration ◽

Oil Accumulation ◽

Petroleum Potential ◽

Late Mesozoic ◽

West Antarctic

On the basis of geological comparison and analogy with other Gondwanaland continents, four regions of Antarctica and its continental margin offer potential petroleum-bearing basins.The area of the Weddell Sea, Byrd subglacial basin and Ross Sea is analogous to the area east of the Andes Mountains in Argentina and offers good petroleum potential.The divergent continental margin of East Antarctica is analogous to the southern Australian and East Brazilian margins and its continental shelf is likely to contain Late Mesozoic basins, perhaps with a variety of reservoir systems, having good petroleum potential.The wide continental shelves of the Bellinghausen and Amundsen seas on the West Antarctic margin may also present favourable areas of petroleum exploration. Large intracratonic basins in East Antarctica, although possibly geologically favourable for oil accumulation, lie beneath thick ice, are largely unknown, and are the least prospective of the four areas.The exploitation of any Antarctic mineral resources will require the resolution of sovereignty claims to Antarctica at present excluded from the Antarctic Treaty.

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Distribution patterns of microfauna (nematodes, rotifers and tardigrades) on nunataks in Dronning Maud Land, East Antarctica

Polar Biology ◽

10.1007/s003000050044 ◽

1996 ◽

Vol 16 (3) ◽

pp. 191-200 ◽

Cited By ~ 1

Author(s):

B. Sohlenius ◽

Sven Boström ◽

Angelika Hirschfelder

Keyword(s):

Distribution Patterns ◽

East Antarctica ◽

Dronning Maud Land

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Rayleigh wave phase velocity analysis of the Ross Sea, Transantarctic Mountains, and East Antarctica from a temporary seismograph array

Journal of Geophysical Research Atmospheres ◽

10.1029/2005jb003812 ◽

2006 ◽

Vol 111 (B6) ◽

pp. n/a-n/a ◽

Cited By ~ 37

Author(s):

Jesse F. Lawrence ◽

Douglas A. Wiens ◽

Andrew A. Nyblade ◽

Sridhar Anandakrishnan ◽

Patrick J. Shore ◽

...

Keyword(s):

Phase Velocity ◽

Rayleigh Wave ◽

Ross Sea ◽

East Antarctica ◽

Velocity Analysis ◽

Wave Phase ◽

Wave Phase Velocity ◽

Transantarctic Mountains ◽

Rayleigh Wave Phase Velocity

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The Scottish National Antarctic Expedition 1902–04

Polar Record ◽

10.1017/s0032247400005623 ◽

1985 ◽

Vol 22 (139) ◽

pp. 379-392 ◽

Cited By ~ 4

Author(s):

Ralph E. Bernstein

Keyword(s):

Ross Sea ◽

Scientific Discovery ◽

Weddell Sea ◽

East Antarctica ◽

Orkney Islands ◽

Geographical Society ◽

Antarctic Expedition ◽

South Orkney Islands ◽

20Th Anniversary ◽

First Time

On 21 July 1904, just over 80 years ago, the barque-rigged, Norwegian-built auxiliary steamship Scotia sailed home up the Clyde with members of the Scottish National Antarctic Expedition (SNAE), concluding one of the most successful expeditions of the heroic period of Antarctic exploration. Contemporaneous with the more spectacular British Antarctic Expedition (1901–03) commanded by Robert Falcon Scott, the Scotia party under William Spiers Bruce had overwintered on Laurie Island (60° 44ʹ S, 44° 50ʹ W) in the South Orkney Islands, explored for the first time the oceanography of the Weddell Sea, assembled an important collection of scientific material, and discovered Coats Land, an icebound stretch of the East Antarctica coast.While Scott's Discovery expedition had emphasized geographical exploration inland from the Ross Sea sector of Antarctica, Bruce in the Scotia had concentrated more on scientific discovery in the Weddell Sea sector. On 12 November 1904 in Edinburgh, members of the Scotia and Discovery expeditions were guests at the 20th anniversary dinner of the Royal Scottish Geographical Society, Bruce and Scott together responding to a presidential toast that honoured the success of both.

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Quantified vegetation change over 42 years at Cape Hallett, East Antarctica

Antarctic Science ◽

10.1017/s0954102006000605 ◽

2006 ◽

Vol 18 (4) ◽

pp. 561-572 ◽

Cited By ~ 14

Author(s):

L. Brabyn ◽

C. Beard ◽

R.D. Seppelt ◽

E.D. Rudolph ◽

R. Türk ◽

...

Keyword(s):

Vegetation Change ◽

Ross Sea ◽

Distribution Patterns ◽

Considerable Change ◽

Gis Mapping ◽

Time Period ◽

Victoria Land ◽

Mapping Techniques ◽

A Site ◽

Monitoring Change

This paper reports on the remapping of a carefully documented vegetation plot at Cape Hallett (72°19′S 170°16′E) to provide an assessment of the rates of vegetation change over decadal time scales. E.D. Rudolph, in 1962, mapped in detail the vegetation of a site approximately 28 m by 120 m at Cape Hallett, Victoria Land, Antarctica. This site was relocated and remapped in January 2004 and changes were assessed using GIS techniques. This appears to be the longest available time period for assessing vegetation change in Antarctica. The analysis indicated that considerable change had occurred in moss and algae distribution patterns and this seems to have been caused by increased water supply, particularly in wetter areas. There was also evidence of some change in lichen distribution. The extent of the change indicates that vegetation cover can be used for monitoring change in areas as extreme as the Ross Sea region. For this analysis to be successful it was important that the mapping techniques used were totally explicit and could easily be replicated. Fortunately, Rudolph had defined his cover classes and the site was also clearly marked. The application of GIS mapping techniques allows the mapping to be more explicitly defined and easily replicated.

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