Desert Varnish: The Importance of Clay Minerals
- 24 June 1977
- journal article
- other
- Published by American Association for the Advancement of Science (AAAS) in Science
- Vol. 196 (4297) , 1446-1448
- https://doi.org/10.1126/science.196.4297.1446
Abstract
Desert varnish has been characterized by infrared spectroscopy, x-ray diffraction, and electron microscopy. It is a distinct morphological entity having an abrupt boundary with the underlying rock. Clay minerals comprise more than 70 percent of the varnish. Iron and manganese oxides constitute the bulk of the remainder and are dispersed throughout the clay layer.Keywords
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