Arkadelphia Marl

Arkadelphia Marl
Stratigraphic range:
TypeFormation
UnderliesMidway Group
OverliesNacatoch Formation
Thickness120 to 160 feet
Location
RegionArkansas
CountryUnited States
Type section
Named forArkadelphia, Clark County, Arkansas
Named byRobert Thomas Hill

The Arkadelphia Marl, also called the Arkadelphia Formation, is a geologic formation in Arkansas in Clark, Nevada, and Hempstead counties. It preserves fossils dating back to the late Maastrichtian stage of the Cretaceous period.

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