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AGS / Geology / Stratigraphy / Ozark Plateaus / Quaternary


Alluvium and Terrace Deposits

Age: Quaternary Period
Distribution: Along the major stream valleys of the Ozark Plateaus in northern Arkansas
Geology: The deposits indicated by this notation are alluvial deposits of present streams and one or more terrace levels. Sediments include gravels, sands, silts, clays and mixtures of any and all of these. Fossils are rare. The lower contact is unconformable and the thickness is variable.


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Arkansas Geological Survey
Vardelle Parham Geology Center
3815 West Roosevelt Road
Little Rock, AR 72204
Phone: 501-296-1877 | Fax: 501-663-7360
Business Hours: Monday - Friday 8:00am - 4:30pm

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Big Rock Quarry Panorama
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