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'''Calvert Cliffs State Park''' is a [[state park]] in [[Calvert County]], [[Maryland]], situated on the [[Chesapeake Bay]]. On the 1612 [[John Smith of Jamestown|John Smith]] map, the site was called Rickard's Cliffes. The park is located in [[Lusby, Maryland]].
It is a short distance south of [[Calvert Cliffs Nuclear Power Plant]] operated by [[Constellation Energy]].
==Geology and paleontology==
The park is known for the abundance of mainly [[Middle Miocene]] sub-epoch [[fossil]]s, which can be found on the shoreline. It contains the [[type locality (geology)|type locality]] site of the Early to [[Middle Miocene]] '''Calvert Formation'''. These rocks are the [[sediment]] from a coastal ocean that covered the area during that time. The age of the formation is (19-)18-15(-14) million years, i.e. it extends essentially over the [[Hemingfordian]] [[NALMA|stage]]. This formation occurs in Maryland and neighboring [[Virginia]].
