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Statements

Subject Item
dbr:Ogallala_Formation
rdf:type
dbo:Mammal
rdfs:label
Ogallala Formation
rdfs:comment
The Ogallala Formation is a Miocene to early Pliocene geologic formation in the central High Plains of the western United States and the location of the Ogallala Aquifer. In Nebraska and South Dakota it is also classified as the Ogallala Group. Notably, it records the North American Land Mammal Ages (NALMAs) Hemphillian, Clarendonian, and Barstovian. It also includes an excellent record of grass seeds and other plant seeds, which can be used for biostratigraphic dating within the formation. The Ogallala Formation outcrops of Lake Meredith National Recreation Area preserve fish fossils. Similar specimens from the same unit are found at Alibates Flint Quarries National Monument in Texas.
dbp:name
Ogallala Formation
foaf:depiction
n6:Ash_Hollow_Nebraska.jpg n6:Blanco_Canyon_Crosby_County_Texas.jpg
dcterms:subject
dbc:Neogene_geology_of_Oklahoma dbc:Neogene_geology_of_Nebraska dbc:Neogene_geology_of_South_Dakota dbc:Neogene_geology_of_Wyoming dbc:Neogene_geology_of_Texas dbc:Neogene_stratigraphic_units_of_North_America dbc:Geology_of_Colorado dbc:Geology_of_Kansas
dbo:wikiPageID
37922800
dbo:wikiPageRevisionID
1107586850
dbo:wikiPageWikiLink
dbc:Neogene_geology_of_Oklahoma dbr:Alibates_Flint_Quarries_National_Monument dbr:Pliocene dbr:Western_Interior_Seaway dbr:Miocene dbr:Ash_Hollow_Formation dbr:Ash_Hollow_State_Historical_Park dbr:Lake_Meredith_National_Recreation_Area dbr:Silicon_dioxide dbr:Pleistocene dbr:List_of_fossiliferous_stratigraphic_units_in_Nebraska dbr:United_States dbr:Hemphillian dbc:Neogene_geology_of_Nebraska dbr:Caliche dbc:Neogene_geology_of_Wyoming dbr:Permian dbr:Biostratigraphy dbr:Cenozoic dbr:Texas dbr:Blanco_Canyon dbc:Neogene_geology_of_South_Dakota dbr:Volcanic_ash dbr:Valles_Caldera dbr:Mesozoic dbr:Paleozoic dbr:Blanco_Formation dbr:Formation_(stratigraphy) dbr:Ogallala,_Nebraska dbr:Geology_of_the_Rocky_Mountains dbr:Cretaceous dbr:Limestone dbr:South_Dakota dbr:Jurassic dbr:Precambrian dbr:Alluvial_fan dbc:Neogene_geology_of_Texas dbr:Group_(stratigraphy) dbc:Geology_of_Colorado dbc:Neogene_stratigraphic_units_of_North_America dbr:Valentine_Formation dbr:High_Plains_(United_States) dbr:Blancan dbr:Yellowstone_Caldera dbr:Algae dbr:Clarendonian dbr:Loess dbr:North_American_land_mammal_age dbr:Paleontology_in_Nebraska dbr:Calcium_carbonate dbc:Geology_of_Kansas dbr:Nebraska dbr:Horizon_(geology) dbr:Kimball_Formation dbr:Triassic dbr:Marl dbr:Ogallala_Aquifer dbr:Barstovian
owl:sameAs
n12:f1wB freebase:m.0zn10vn wikidata:Q16934387
dbp:subunits
*Valentine *Ash Hollow Nebraska only: *Kimball
dbp:underlies
dbr:Loess dbr:Pleistocene
dbp:wikiPageUsesTemplate
dbt:Chronostratigraphy_of_Colorado dbt:Gallery dbt:Reflist dbt:Fossilrange dbt:Infobox_rockunit dbt:Short_description dbt:Portal
dbo:thumbnail
n6:Ash_Hollow_Nebraska.jpg?width=300
dbp:caption
Common appearance of the "caprock" caliche beds from the middle of the Ogallala at Ash Hollow, Nebraska
dbp:country
dbr:United_States
dbp:period
Neogene
dbp:region
dbr:High_Plains_(United_States)
dbp:type
dbr:Formation_(stratigraphy) dbr:Group_(stratigraphy)
dbo:abstract
The Ogallala Formation is a Miocene to early Pliocene geologic formation in the central High Plains of the western United States and the location of the Ogallala Aquifer. In Nebraska and South Dakota it is also classified as the Ogallala Group. Notably, it records the North American Land Mammal Ages (NALMAs) Hemphillian, Clarendonian, and Barstovian. It also includes an excellent record of grass seeds and other plant seeds, which can be used for biostratigraphic dating within the formation. The Ogallala Formation outcrops of Lake Meredith National Recreation Area preserve fish fossils. Similar specimens from the same unit are found at Alibates Flint Quarries National Monument in Texas.
dbp:namedfor
dbr:Ogallala,_Nebraska
dbp:otherlithology
chert, agate, opaline sandstone, marl, limestone, ash
dbp:overlies
Weathered Cretaceous, Jurassic, Triassic, and Permian terrains
dbp:prilithology
sand, gravel, caliche cementation
gold:hypernym
dbr:Miocene
prov:wasDerivedFrom
wikipedia-en:Ogallala_Formation?oldid=1107586850&ns=0
dbo:wikiPageLength
12209
foaf:isPrimaryTopicOf
wikipedia-en:Ogallala_Formation