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ellie55991
21.08.2019 •
Geography
Adark, rusty-brown surface coating of iron oxide, manganese oxide, and clay often found on desert rocks is known as
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Ответ:
desert varnish
Explanation:
Desert varnish
Also called the rock varnish ,
It is the orange -yellowish to blackish coating which is found on the surface of rocks in the arid environments .
It is about a micrometer thick and have a nanometer - scale layering on the surface .
desert varnish is formed only over the surface of the physically stable rocks.
The composition of the varnish is from iron , and manganese oxides .
Ответ:
A, Tropical wet
hope this helps!