Impact of anthropogenic inputs on Pb content of moss Sanionia uncinata (Hedw.) Loeske in King George Island, West Antarctica revealed by Pb isotopes

2021 ◽  
Author(s):  
Hye-Bin Choi ◽  
Hyoun Soo Lim ◽  
Young-Jun Yoon ◽  
Ji-Hoon Kim ◽  
Ok-Sun Kim ◽  
...  
Keyword(s):  
Pb Isotopes ◽  
King George Island ◽  
West Antarctica ◽  
Anthropogenic Inputs ◽  
Sanionia Uncinata

A 2000-year record of mercury and ancient civilizations in seal hairs from King George Island, West Antarctica

2006 ◽  
Vol 368 (1) ◽  
pp. 236-247 ◽  
Author(s):  
Liguang Sun ◽  
Xuebin Yin ◽  
Xiaodong Liu ◽  
Renbin Zhu ◽  
Zhouqing Xie ◽  
...  
Keyword(s):  
King George Island ◽  
West Antarctica ◽  
Ancient Civilizations

Fairy ring disease affects epiphytic algal assemblages associated with the moss Sanionia uncinata (Hedw.) Loeske (Bryophyta) on King George Island, Antarctica

Extremophiles ◽  
2021 ◽  
Author(s):  
Paulo E. A. S. Câmara ◽  
Pedro V. Eisenlohr ◽  
Lívia C. Coelho ◽  
Micheline Carvalho-Silva ◽  
Eduardo T. Amorim ◽  
...  
Keyword(s):  
King George Island ◽  
Algal Assemblages ◽  
Sanionia Uncinata

scholarly journals Shell beds from the Low Head Member (Polonez Cove Formation, early Oligocene) at King George Island, west Antarctica: new insights on facies analysis, taphonomy and environmental significance

2014 ◽  
Vol 26 (4) ◽  
pp. 400-412 ◽  
Author(s):  
Fernanda Quaglio ◽  
Lucas Veríssimo Warren ◽  
Luiz Eduardo Anelli ◽  
Paulo Roberto Dos Santos ◽  
Antonio Carlos Rocha-Campos ◽  
...  
Keyword(s):  
King George Island ◽  
West Antarctica ◽  
Delta Front ◽  
Early Oligocene ◽  
Fan Delta ◽  
Shell Beds ◽  
The Matrix ◽  
Low Head ◽  
New Interpretation ◽  
Shell Bed

AbstractShell bed levels in the Low Head Member of the early Oligocene Polonez Cove Formation at King George Island, West Antarctica, are re-interpreted based on sedimentological and taphonomic data. The highly fossiliferous Polonez Cove Formation is characterized by basal coastal marine sandstones, overlain by conglomerates and breccias deposited in fan-delta systems. The shell beds are mainly composed of pectinid bivalve shells of Leoclunipecten gazdzickii and occur in the basal portion of the Low Head Member. Three main episodes of bioclastic deposition are recorded. Although these shell beds were previously interpreted as shelly tempestites, we present an alternative explanation: the low fragmentation rates and low size sorting of the bioclasts resulted from winnowing due to tidal currents (background or diurnal condition) in the original bivalve habitat. The final deposition (episodic condition) was associated with subaqueous gravity driven flows. This new interpretation fits with the scenario of a prograding fan-delta front, which transported shell accumulations for short distances near the depositional site, possibly between fair-weather and storm wave bases. This work raises the notion that not every shell bed with similar sedimentological and taphonomic features (such as geometry, basal contact, degree of packing and shell orientation in the matrix) is made in the same way.

Soil cover of the Fildes Peninsula (King George Island, West Antarctica)

CATENA ◽  
2020 ◽  
Vol 193 ◽  
pp. 104613 ◽  
Author(s):  
A.V. Lupachev ◽  
E.V. Abakumov ◽  
S.V. Goryachkin ◽  
A.A. Veremeeva
Keyword(s):  
Soil Cover ◽  
King George Island ◽  
West Antarctica ◽  
Fildes Peninsula

scholarly journals Oceanographic Variability induced by Tides, the Intraseasonal Cycle and Warm Subsurface Water intrusions in Maxwell Bay, King George Island (West-Antarctica)

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
P. J. Llanillo ◽  
C. M. Aiken ◽  
R. R. Cordero ◽  
A. Damiani ◽  
E. Sepúlveda ◽  
...  
Keyword(s):  
Austral Summer ◽  
Flood Tide ◽  
Subsurface Water ◽  
King George Island ◽  
Biological Productivity ◽  
West Antarctica ◽  
Ice Shelf ◽  
Tidewater Glaciers ◽  
Subsurface Waters ◽  
Maxwell Bay

AbstractWe examine the hydrographic variability induced by tides, winds, and the advance of the austral summer, in Maxwell Bay and tributary fjords, based on two recent oceanographic campaigns. We provide the first description in this area of the intrusion of relatively warm subsurface waters, which have led elsewhere in Antarctica to ice-shelf disintegration and tidewater glacier retreat. During flood tide, meltwater was found to accumulate toward the head of Maxwell Bay, freshening and warming the upper 70 m. Below 70 m, the flood tide enhances the intrusion and mixing of relatively warm modified Upper Circumpolar Deep Water (m-UCDW). Tidal stirring progressively erodes the remnants of Winter Waters found at the bottom of Marian Cove. There is a buoyancy gain through warming and freshening as the summer advances. In Maxwell Bay, the upper 105 m were 0.79 °C warmer and 0.039 PSU fresher in February than in December, changes that cannot be explained by tidal or wind-driven processes. The episodic intrusion of m-UCDW into Maxwell Bay leads to interleaving and eventually to warming, salinification and deoxygenation between 80 and 200 m, with important implications for biological productivity and for the mass balance of tidewater glaciers in the area.

Sr-Nd-Pb isotopes of Tertiary volcanics of King George Island, Antarctica

1997 ◽  
Vol 42 (22) ◽  
pp. 1913-1918 ◽  
Author(s):  
Guangfu Xing ◽  
Weizhou Shen ◽  
Dezi Wang ◽  
Qingmin Jin
Keyword(s):  
Pb Isotopes ◽  
King George Island
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