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Investigation of the factors controlling the distribution of desert varnish in the Wright Valley
Entry ID: K008_1972_1973_NZ_1

Abstract: An investigation of the factors controlling the distribution of desert varnish in the Wright Valley, Antarctica was conducted. Traverses were made on foot throughout the Wright Valley and revealed that desert varnish is found almost exclusively in high altitude areas and is dominantly associated with dolerite. It is considered that the formation of this coating on the rocks is a surface weathering phenomenon resulting from the wind induced forced advection of moisture from the surface of the rock. This causes the deposition of a thin layer of manganese and iron oxides on the surface of the rock.
Geographic Coverage
Spatial coordinates   
  N: -77.3   S: -77.65   E: 163.0   W: 161.0

Temporal Coverage
Start Date: 1972-12-24
Stop Date: 1973-02-11
ISO Topic Category
Quality The data is contained in the publication. Please contact the data center for more information.
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Antarctica New Zealand, New Zealand Antarctic Institute, New Zealand Supplemental Info
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Glasby, G.P. McPherson, J.G. Kohn, B.P. Johnston, J.H. Keys, J.R. Freeman, A.G. Tricker, M.J. 1981 Desert varnish in southern Victoria Land, Antarctica. New Zealand journal of geology and geophysics 24: 389-397
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Creation and Review Dates
DIF Creation Date: 2009-06-23
Last DIF Revision Date: 2017-08-23