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- Arapahoe_Formation abstract "The Arapahoe Formation is a geological formation of latest Cretaceous (Maastrichtian) age that is present within the Denver Basin that underlies the Denver, Colorado, area. The formation includes fossil leaves and dinosaur remains, although none of the latter have yet been referred to a specific genus. It also includes aquifers that are important sources of water for the area.The Arapahoe Formation consists of alluvial fan and fluvial deposits that prograded eastward from the growing Rocky Mountain Front Ranges. It rests unconformably on the Laramie Formation, and is conformably overlain by the Denver Formation. It reaches a maximum thickness of about 300 ft (91 m).The base of the Arapahoe Formation is marked by a discontinuous conglomerate, or where the conglomerate is absent, by sandstone beds that commonly contain large ironstone concretions. The conglomerate is composed principally of chert pebbles, but pebbles of granite, gneiss and schist are also present. Medium grey to brown claystone makes up the majority of the formation, with lesser amounts of light grey to light brown quartzose sandstone. The formation top is marked by a change from sandstone and claystone to the tuffaceous sediments of the overlying Denver Formation.In 2002 the Arapahoe Formation was included as part of a larger unconformity-bounded unit named the D1 Sequence, in order to facilitate basin-wide studies and avoid confusion arising from the lateral and vertical facies changes that occur within the Denver Basin. The base of the D1 coincides with the base of the Arapahoe Formation and is marked by the abrupt change to conglomerate at the top of the Laramie Formation. The top D1 is placed at the base of a regional paleosol series. The Denver Formation and the Dawson Arkose are also included in the D1 Sequence.".
- Arapahoe_Formation wikiPageID "25146120".
- Arapahoe_Formation wikiPageLength "4314".
- Arapahoe_Formation wikiPageOutDegree "36".
- Arapahoe_Formation wikiPageRevisionID "654367377".
- Arapahoe_Formation wikiPageWikiLink Alluvial_fan.
- Arapahoe_Formation wikiPageWikiLink Category:Cretaceous_Colorado.
- Arapahoe_Formation wikiPageWikiLink Category:Geology_of_the_Rocky_Mountains.
- Arapahoe_Formation wikiPageWikiLink Category:Maastrichtian_geologic_formations.
- Arapahoe_Formation wikiPageWikiLink Chert.
- Arapahoe_Formation wikiPageWikiLink Claystone.
- Arapahoe_Formation wikiPageWikiLink Colorado.
- Arapahoe_Formation wikiPageWikiLink Concretion.
- Arapahoe_Formation wikiPageWikiLink Conglomerate_(geology).
- Arapahoe_Formation wikiPageWikiLink Dawson_Arkose.
- Arapahoe_Formation wikiPageWikiLink Denver.
- Arapahoe_Formation wikiPageWikiLink Denver_Basin.
- Arapahoe_Formation wikiPageWikiLink Denver_Formation.
- Arapahoe_Formation wikiPageWikiLink Dinosaur.
- Arapahoe_Formation wikiPageWikiLink Facies.
- Arapahoe_Formation wikiPageWikiLink Fluvial.
- Arapahoe_Formation wikiPageWikiLink Formation_(geology).
- Arapahoe_Formation wikiPageWikiLink Genus.
- Arapahoe_Formation wikiPageWikiLink Geological_formation.
- Arapahoe_Formation wikiPageWikiLink Gneiss.
- Arapahoe_Formation wikiPageWikiLink Granite.
- Arapahoe_Formation wikiPageWikiLink Ironstone.
- Arapahoe_Formation wikiPageWikiLink Laramie_Formation.
- Arapahoe_Formation wikiPageWikiLink Late_Cretaceous.
- Arapahoe_Formation wikiPageWikiLink List_of_dinosaur-bearing_rock_formations.
- Arapahoe_Formation wikiPageWikiLink List_of_stratigraphic_units_with_indeterminate_dinosaur_fossils.
- Arapahoe_Formation wikiPageWikiLink Lists_of_dinosaur-bearing_stratigraphic_units.
- Arapahoe_Formation wikiPageWikiLink Maastrichtian.
- Arapahoe_Formation wikiPageWikiLink Mudrock.
- Arapahoe_Formation wikiPageWikiLink Paleosol.
- Arapahoe_Formation wikiPageWikiLink Quartz.
- Arapahoe_Formation wikiPageWikiLink Sandstone.
- Arapahoe_Formation wikiPageWikiLink Schist.
- Arapahoe_Formation wikiPageWikiLink Tuff.
- Arapahoe_Formation wikiPageWikiLink Unconformity.
- Arapahoe_Formation wikiPageWikiLinkText "Arapahoe Conglomerate".
- Arapahoe_Formation wikiPageWikiLinkText "Arapahoe Formation".
- Arapahoe_Formation age Late_Cretaceous.
- Arapahoe_Formation hasPhotoCollection Arapahoe_Formation.
- Arapahoe_Formation name "Arapahoe Formation".
- Arapahoe_Formation namedby "Emmons, Cross and Eldridge".
- Arapahoe_Formation overlies Laramie_Formation.
- Arapahoe_Formation thickness "Up to about".
- Arapahoe_Formation type Geological_formation.
- Arapahoe_Formation underlies Denver_Formation.
- Arapahoe_Formation unitof "D1 Sequence".
- Arapahoe_Formation wikiPageUsesTemplate Template:Convert.
- Arapahoe_Formation wikiPageUsesTemplate Template:Infobox_rockunit.
- Arapahoe_Formation wikiPageUsesTemplate Template:Portal.
- Arapahoe_Formation wikiPageUsesTemplate Template:Reflist.
- Arapahoe_Formation subject Category:Cretaceous_Colorado.
- Arapahoe_Formation subject Category:Geology_of_the_Rocky_Mountains.
- Arapahoe_Formation subject Category:Maastrichtian_geologic_formations.
- Arapahoe_Formation hypernym Formation.
- Arapahoe_Formation type MilitaryUnit.
- Arapahoe_Formation type Formation.
- Arapahoe_Formation type Unit.
- Arapahoe_Formation comment "The Arapahoe Formation is a geological formation of latest Cretaceous (Maastrichtian) age that is present within the Denver Basin that underlies the Denver, Colorado, area. The formation includes fossil leaves and dinosaur remains, although none of the latter have yet been referred to a specific genus.".
- Arapahoe_Formation label "Arapahoe Formation".
- Arapahoe_Formation sameAs m.09gd1l4.
- Arapahoe_Formation sameAs Q4784197.
- Arapahoe_Formation sameAs Q4784197.
- Arapahoe_Formation wasDerivedFrom Arapahoe_Formation?oldid=654367377.
- Arapahoe_Formation isPrimaryTopicOf Arapahoe_Formation.