Wright Valley

Green, W.J., Stage, B.R., Preston, A., Wagers, S., Shacat, J. Newell, S. 2005. Geochemical processes in the Onyx River, Wright Valley, Antarctica major ions, nutrients, trace metals. Geochemica et Cosmochimica Acta, 69, 839-850. 

Marion CM (1997) A theoretical evaluation of mineral stability in Don Juan Pond, Wright Valley, Victoria Land. Antarctic Sci 9 92-99... 

Bockheim, J. G. (1979). Relative age and origin of soils in eastern Wright Valley, Antarctica. Soil Set. 128,142-152. 

Ugolini, F. C. (1963). Pedological investigation in the lower Wright Valley, Antarctica. Proc. Int. Conf. Permafrost. NAS-NRC Publication No. 1278, pp. 55-61, Washington, D.C. 

Fig. 3.5 The western end of Wright Valley in southern Victoria Land is framed by the Olympus Range in the north and the Asgard Range in the south. Ice from the East Antarctic ice sheet of the polar plateau enters the valley via the Airdevronsix icefaU and forms the Wright Upper Glacier. The Labyrinth at its base was carved by meltwater streams flowing under pressure at the base of a glacier that once flUed the Wright Valley. Lake Vanda is peren-...

Fig. 3.8 Geologic map of the western Wright Valley in southern Victoria Land. This area is included in Fig. 3.5 (Adapted from McKelvey and Webb 1962)...

The Asgard Formation of Wright Valley described by McKelvey and Webb (1962) consists of interbed-ded marbles, homfels, and schists that grade locally into paragneiss and migmatite close to contacts with plutons of the Wright Intrusives. The type locality of this formation is the south wall of Wright Valley between Mt. Loke and Mt. Valkyrie. 

Bonney pluton Olympus Granite-Gneiss and Dais Granite (Wright Valley) Larsen Granodiorite (Taylor Valley)... 

Denton pluton Olympus Granite-Gneiss (Wright Valley)... 

Fig. 3.14 Rb-Sr isochron defined by whole-rock samples of two Vanda Porphyry dikes (R1 and R2) and K-feldspar concentrates (FI and F2). The date of 460 7 Ma is the crystallization age of these dikes which were intruded into the metasedimentary rocks of the Asgard Formation, and into the plutonic igneous rocks of the Granite Harbor Intrusives in Wright Valley during the Middle Ordovician Epoch after the Ross Orogeny (Plotted from data by Jones and Faure 1967)...

The Rb-Sr isochron method was used by Jones and Faure (1967) in Section 3.4.2 to date whole-rock samples and separated alkali feldspars of two Vanda porphyry dikes in Wright Valley. A least-squares regression of the data points in Fig. 3.14 yields a slope (m) ... 

Faure G, Jones LM, Owen LB (1974) Isotopic composition of strontium and geologic history of the basement rocks of Wright Valley, southern rictoria Land, Antarctica. New Zealand J Geol Geophys 17(3) 611-627... 

The geologists who accompanied Robert Scott and Ernest Shackleton to Antarctica were amazed when they entered the mountains of southern Victoria Land and discovered the ice-free valleys such as Wright Valley in Fig. 10.1 (Sections 1.4, 2.3, and 3.1). The modem traveler entering the ice-free valleys by helicopter from McMurdo is similarly affected because the wide U-shaped valleys present a familiar view of sandy plains dotted with lakes and ponds filled with liquid water and of meltwater streams that flow from alpine glaciers descending from the high mountain ranges that frame these valleys. 

Fig. 10.1 Wright Valley In southern Victoria Land is ice-free and contains the Onyx River which flows inland from Lake Brown worth at the base of the Wright Lower Glacier near the...

The type locality of the Odin Arkose is Mt. Boreas (77 28 S, 16r07 E) in the Olympus Range north of Wright Valley in Fig. 10.5. The unit is about 90 m thick... 

Fig. 10.5 The Wright Valley in southern Victoria Land slopes west, away from the coast, and contains the Onyx River which flows from Lake Brownwoith at the foot of the Wright Lower Glacier to Lake Vanda at the western end of the valley (Fig. 3.5). The Asgard Range south of Wright Valley supports several valley glaciers which were named by Professor R.L. Nichols after...

Table 10.2 Expanded stratigraphy of the Beacon Supergroup between the Olympus Range (Wright Valley) and the Boomerang Range (Skelton Ndve) in southern Victoria Land (McKelvey et al. 1970)...

The crustal characteristics of the Jurassic doler-ites of Antarctica and Tasmania relate these rocks to each other and set them apart from Jurassic dolerite in southern Africa and Brazil. This point was emphasized by Compston et al. (1968) in a direct comparison of Rb-Sr systematics of Mesozoic basaltic rocks in southern Victoria Land, Tasmania, South Africa, and South America. In addition, these authors reported K-Ar dates for plagioclase and pyroxene from a pegmatoid in the Lake Vanda sill in Wright Valley of southern Victoria Land. The results indicated a Middle Jurassic age for the Ferrar Dolerite, in agreement with the age of the Tasmanian Dolerite and the K-Ar dates of the Wisanger Basalt on Kangaroo Island of South Australia reported later by McDougall and Wellman (1976). 

Fig. 13.1 The Wright Valley in southern Victoria Land contains three sills of Ferrar Dolerite The Basement sill intruded the Granite Harbor Intrusives of the local basement, the Peneplain siU lies between the granitic basement and the overlying sandstones of the Beacon Supergroup, and the uppermost sill was injected...

Subsequently, Compston et al. (1968) published additional K-Ar dates of plagioclase and pyroxene from a dolerite siU near Lake Vanda in Wright Valley. These dates ranged from 153.9 to 169.2 Ma and were combined in Fig. 13.4 with the K-Ar dates published by McDougall (1963). 

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