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A comment on a note on the characteristics and possible origins of desert varnishes from southeast Morocco by DRS. SMITH and WHALLEY and reply
(supprimer)
A comment on a note on the characteristics and possible origins of desert varnishes from southeast Morocco by DRS. SMITH and WHALLEY and reply
This note queries the discussion of the origins of desert varnishes (Smith and Whalley, 1988), with particular reference to manganese - rich conditions. The case for a biotic model of varnish development is proposed and illustrated as opposed
to the abiotic model put forward by Smith and Whalley.