Antarctic Soils and Soil Forming Processes by J.C. F. Tedrow

By J.C. F. Tedrow

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Published through the yankee Geophysical Union as a part of the Antarctic study Series.

Are there, in reality, any soils in Antarctica? this is often the query requested by way of laymen and execs alike.

It is seventy years or extra given that guy first set foot at the antarctic continent, and through this time explorers, naturalists, geologists, and others have given us huge info on many ice-free components and feature photographed and mapped a substantial component of the continent. simply in the final ten years, despite the fact that, have the 1st systematic pedologic stories been undertaken. even if the observations of those initial experiences are vital and illuminating, wisdom of pedologic approaches as an entire at the antarctic continent has no longer complex a lot past a 'statement of the problem.'

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A series of ridges and valleys essentiallyparallel to the ice front could be traced for scoresof feet. The ridges were only a few fee• apart and the valleys only a few feet deep. This The sand in the kame moraine is very well rounded,and was formed by the mechanicalbreakup of an eolian facies of the Beacon Sandstone that crops out in the upper part of the Wright Valley [McKelvey and Webb, 1962]. The winter winds, which blow eastward, carry the sand down the valley and up onto the Wright Lower Glacier.

Hard, shiny, wind-cut surface on the right; soft, flaky, crumbly, weathered surface on the left; wind moved from right to left (field notebook gives scale). Copyright American Geophysical Union Antarctic Research Series 36 Antarctic Soils and Soil Forming Processes Vol. 8 ROBERT L. NICHOLS Fig. 42. A ventifact pavement, Wright Valley, Antarctica. The larger fragments have had a foot of rock removed by wind-cutting. and several feet deep occupy the synclinal troughs during the summer months before the breakup of the sea ice [Nichols, 1960].

Solifluction and running water are intermediate in imstonal activity of running water are present. ' Valleys, meander scars, portance. and cutoffs cut by melt-water streams in the Koettlitz Glacier have been described by Taylor WORK OF WIND [1922]. Sizable melt-water channels are located near the terminus of the Taylor and Wright Lower Eolian Deposits glaciers. A ravine 15-20 feet deep has been cut in the ice-cored moraine at the eastern end of Wright Althoughin the Antarctic coltandepositsare not Valley.

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