Calvert Cliffs

E94289

fossil site geological formation sea cliffs

Calvert Cliffs are steep, fossil-rich clay and sand bluffs along the western shore of the Chesapeake Bay, renowned for their abundant Miocene-era marine fossils and striking coastal scenery.

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All labels observed (5)

Label	Occurrences
Calvert Cliffs canonical	5
Calvert Cliffs State Park	5
Calvert Cliffs Coordinating Committee	1
Calvert Cliffs area	1
Randle Cliff Beach, Maryland	1

How this entity was disambiguated

This entity first appeared as the object of triple T785753 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.

NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07

Target entity: Calvert Cliffs
Context triple: [Calvert County, Maryland, knownFor, Calvert Cliffs]

A. Patapsco River Neck
Patapsco River Neck is a peninsula in southeastern Baltimore County, Maryland, bordered by branches of the Patapsco River and home to communities such as North Point.
B. Accokeek, Maryland
Accokeek, Maryland is a suburban community in southern Prince George’s County known for its scenic Potomac River shoreline and proximity to Washington, D.C.
C. Occoquan
Occoquan is a small historic town in Northern Virginia known for its preserved 18th- and 19th-century architecture, riverside setting, and arts and crafts shops.
D. Aquia Harbour, Virginia
Aquia Harbour, Virginia is a planned residential community and census-designated place in Stafford County known for its marina, golf course, and proximity to Quantico and the Washington, D.C. metropolitan area.
E. Calvert
Calvert is a given name most notably borne by Calvert Vaux, the 19th-century British-American architect and landscape designer who co-designed New York City's Central Park.
F. None of above. chosen
G. Unsure - the case is ambiguous/there is not enough information to decide.

NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07

Target entity: Calvert Cliffs
Target entity description: Calvert Cliffs are steep, fossil-rich clay and sand bluffs along the western shore of the Chesapeake Bay, renowned for their abundant Miocene-era marine fossils and striking coastal scenery.

A. Patapsco River Neck
Patapsco River Neck is a peninsula in southeastern Baltimore County, Maryland, bordered by branches of the Patapsco River and home to communities such as North Point.
B. Accokeek, Maryland
Accokeek, Maryland is a suburban community in southern Prince George’s County known for its scenic Potomac River shoreline and proximity to Washington, D.C.
C. Occoquan
Occoquan is a small historic town in Northern Virginia known for its preserved 18th- and 19th-century architecture, riverside setting, and arts and crafts shops.
D. Aquia Harbour, Virginia
Aquia Harbour, Virginia is a planned residential community and census-designated place in Stafford County known for its marina, golf course, and proximity to Quantico and the Washington, D.C. metropolitan area.
E. Calvert
Calvert is a given name most notably borne by Calvert Vaux, the 19th-century British-American architect and landscape designer who co-designed New York City's Central Park.
F. None of above. chosen

Statements (47)

Predicate	Object
instanceOf	fossil site ⓘ geological formation ⓘ sea cliffs ⓘ
age	Miocene ⓘ surface form: Miocene epoch
approximateAgeRange	about 8 to 18 million years old ⓘ
composedOf	clay ⓘ sand ⓘ
containsMineral	clay minerals ⓘ quartz sand ⓘ
continent	North America ⓘ
country	United States of America ⓘ surface form: United States
erodedBy	Chesapeake Bay ⓘ wave action ⓘ
exposes	Miocene marine sediments ⓘ
fossilEpoch	Miocene ⓘ
fossilEra	Cenozoic ⓘ
fossilType	bivalve shells ⓘ fish vertebrae ⓘ gastropod shells ⓘ marine mammal fossils ⓘ shark teeth ⓘ
geologicalPeriod	Miocene ⓘ
hasColor	light gray to tan ⓘ
hasEcosystem	coastal forest ⓘ tidal marshes ⓘ
hasNearbyFacility	Calvert Cliffs Nuclear Power Plant ⓘ
hasRecreation	birdwatching ⓘ fossil collecting ⓘ hiking ⓘ
hasScientificSignificance	coastal geomorphology ⓘ paleontology ⓘ stratigraphy ⓘ
hasView	Chesapeake Bay ⓘ surface form: Chesapeake Bay shoreline
knownFor	abundant Miocene marine fossils ⓘ coastal scenery ⓘ steep clay and sand bluffs ⓘ
length	approximately 24 miles ⓘ
locatedIn	Calvert County, Maryland ⓘ Maryland ⓘ
locatedOn	Western Shore of Maryland ⓘ surface form: western shore of the Chesapeake Bay
overlooks	Chesapeake Bay ⓘ
partOf	Piedmont-Atlantic Coastal Plain fall line ⓘ surface form: Atlantic seaboard fall line region Calvert Formation ⓘ Chesapeake Group ⓘ
protectedBy	Calvert Cliffs self-linksurface differs ⓘ surface form: Calvert Cliffs State Park
region	Atlantic coastal plain ⓘ surface form: Atlantic Coastal Plain
state	Maryland ⓘ