Aquia Formation
The Aquia Formation is a geologic sandstone formation that extends from the upper Chesapeake Bay to the James River near Hopewell, Virginia.[1] It consists of clayey, silty, very shelly, glauconitic sand.[1] Fossil records indicate that this stratigraphic unit was created during the Paleocene.[1]
When uncovered, it appears dark green to gray-green, argillaceous, with well sorted fine- to medium-grained sand and locally indurated shell beds.[2] It occurs between 0 to 100 feet thick.[2] Quartz and phosphatic pebbles and/or very coarse glauconitic quartz sand mark the base of the unit.[3] A few hard streaks of shells or thin "rock" layers are often reported but appear to be more abundant in the sections south of the James River.[3]
Contents
Fossils of the Aquia Formation
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