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redbed

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redbed [′red‚bed]
(geology)
Continentally deposited sediment composed principally of sandstone, siltsone, and shale; red in color due to the presence of ferric oxide (hematite). Also known as red rock.


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Fluoride levels in groundwater influenced by associated evaporites and redbeds are also elevated in this area, and have a mean concentration of 1.
The sequence is dominated by Upper Jurrasic-Cretaceous redbeds, covered by Tertiary poorly consolidated gravels and subordinately by ignimbrites.
Cu-Ag in Redbeds Proterozoic basalts and some sedimentary members of the Richmond Gulf Group (Chandler 1988) located around Guillaume-Delisle Lake in the southwestern part of the region host redbed-type deposits containing chalcocite and bornite (Labbe and Lacoste 2004).
 
 
 
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