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List Of Fossiliferous Stratigraphic Units In Arkansas
This article contains a list of fossil-bearing stratigraphic units in the state of Arkansas, U.S. Sites See also * Paleontology in Arkansas References * {{DEFAULTSORT:Fossiliferous stratigraphic units in Arkansas Arkansas Stratigraphic units A stratigraphic unit is a volume of Rock (geology), rock of identifiable origin and relative age range that is defined by the distinctive and dominant, easily mapped and recognizable petrology, petrographic, lithology, lithologic or paleontology, p ... Stratigraphy of Arkansas Arkansas geography-related lists United States geology-related lists ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stratigraphic Units
A stratigraphic unit is a volume of Rock (geology), rock of identifiable origin and relative age range that is defined by the distinctive and dominant, easily mapped and recognizable petrology, petrographic, lithology, lithologic or paleontology, paleontologic features (facies) that characterize it. Units must be ''mappable'' and ''distinct'' from one another, but the contact need not be particularly distinct. For instance, a unit may be defined by terms such as "when the sandstone component exceeds 75%". Lithostratigraphic units Sequences of sedimentary rock, sedimentary and volcanic rocks are subdivided the basis of their shared or associated lithology. Formally identified lithostratigraphic units are structured in a hierarchy of lithostratigraphic rank, higher rank units generally comprising two or more units of lower rank. Going from smaller to larger in rank, the main lithostratigraphic ranks are Bed, Member, Formation, Group and Supergroup. Formal names of lithostratigraph ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
De Queen Formation
The De Queen Formation, formerly known as the DeQueen Limestone Member is a Mesozoic geological formation located in southwestern Arkansas and southeastern Oklahoma in the United States. Fossil sauropod and theropod tracks have been reported from the formation.Weishampel, ''et al.'' (2004). "Dinosaur distribution." pp. 517–607. It preserves fossils dating back to the Cretaceous period, particularly the Albian age. See also * List of fossiliferous stratigraphic units in Arkansas * List of dinosaur-bearing rock formations ** List of stratigraphic units with sauropodomorph tracks *** Sauropod tracks * Paleontology in Arkansas Paleontology in Arkansas refers to paleontological research occurring within or conducted by people from the United States, U.S. state of Arkansas. The fossil Fossil record, record of Arkansas spans from the Ordovician to the Eocene. Nearly all of ... Footnotes References * * Weishampel, David B.; Dodson, Peter; and Osmólska, Halszka (eds.) ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Moorefield Formation
The Moorefield Formation, or Moorefield Shale, is a geologic formation in northern Arkansas and eastern Oklahoma that dates to the Meramecian Series of the middle Mississippian. In Arkansas, this formation is generally recognized to have one member, the Ruddell Shale, in the upper Moorefield Formation. Paleofauna Bryozoans *''Archimedes'' :''A. confertus'' :''A. proutanus'' *'' Batostomella'' :''B. dubla'' :''B. parvula'' *'' Tabulipora'' Cephalopods * ''Adnatoceras'' : ''A. alaskense'' * '' Bactrites'' : ''B. caronarius'' : ''B. smithianus'' * ''Endolobus'' : ''E. ornatus'' * '' Girtyoceras'' : ''G. welleri'' * '' Goniaties'' * '' Mitorthoceras'' See also * List of fossiliferous stratigraphic units in Arkansas * Paleontology in Arkansas Paleontology in Arkansas refers to paleontological research occurring within or conducted by people from the United States, U.S. state of Arkansas. The fossil Fossil record, record of Arkansas spans from the Ordovician to the Eocene. Nearl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Midway Group
The Midway Group is a geologic group in Tennessee, Arkansas, Mississippi, Louisiana, Texas and Alabama. It preserves fossils dating back to the Paleogene period Period may refer to: Common uses * Era, a length or span of time * Full stop (or period), a punctuation mark Arts, entertainment, and media * Period (music), a concept in musical composition * Periodic sentence (or rhetorical period), a concept .... See also * List of fossiliferous stratigraphic units in Tennessee * Paleontology in Tennessee References * Geologic groups of Arkansas Paleogene Arkansas Geologic groups of Tennessee {{Tennessee-geologic-formation-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Marlbrook Marl
The Marlbrook Marl is a geologic formation in Arkansas. It preserves fossils dating back to the Cretaceous period. Paleofauna Ostracods *'' Alatacythere'' :''A. pondersana'' *'' Amphicytherura'' :''A. dubia'' *'' Bairda'' *'' Bairdoppilata'' :''B. pondera'' *'' Brachycythere'' :''B. ledaforma'' :''B. ovata'' :''B. rhomboidalis'' *'' Bythocypris'' :''B. windhami'' *'' Clithrocytheridea'' :''C. fabaformis'' *'' Cythereis'' :''C. costatana'' :''C. hannai'' *''Cytherella'' :''C. coryelli'' :''C. navarroensis'' :''C. scotti'' *'' Cytherelloidea'' :''C. austinensis'' :''C. crafti'' :''C. greenensis'' :''C. spiralia'' :''C. tollettensis'' *'' Cytheris'' :''C. communis'' :''C. costatana'' :''C. filicosta'' :''C. pidgeoni'' :''C. tuberculifera'' :''C. verricula'' *'' Cytheropteron'' :''C. blakei'' :''C. castorensis'' :''C. harrisi'' *'' Echinocythereis'' :''E. bartoni'' *'' Haplocytheridea'' :''H. bruceclarki'' :''H. councilli'' :''H. fabaformis'' :''H. globosa'' :''H. micropunctata'' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kimmswick Limestone
The Kimmswick Limestone is an Ordovician geologic formation in Arkansas, Illinois and Missouri. Fossils occurring in the Kimmswick include corals, bryozoans, brachiopods, conodonts, trilobites, crinoids and mollusks. Fossil content The following fossils have been reported from the formation:Kimmswick Limestone at .org s * '' Acodus'' : ''A. unicostatus'' [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
White Bluff Formation
The White Bluff Formation is a marl, sand, and clay geologic formation in Arkansas that is part of the Jackson Group. It preserves fossils dating back to the Paleogene period, specifically the Eocene. Description The White Bluff Formation is composed of three members: the Pastoria Sand Member, the Caney Point Marl Member, and the Rison Clay Member. The Pastoria Sand is a clayey sand containing glauconite and mollusca fossils. The Caney Point Marl is a chalky clay with glauconite and various invertebrate fossils. The Rison Clay is a clay with interbedded silts containing foraminifera fossils and scattered mollusca molds. The entire formation was deposited as a marine sequence. See also * List of fossiliferous stratigraphic units in Arkansas * Paleontology in Arkansas Paleontology in Arkansas refers to paleontological research occurring within or conducted by people from the United States, U.S. state of Arkansas. The fossil Fossil record, record of Arkansas spans from the O ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jackson Group
The Jackson Group is a geologic group in Arkansas and North Carolina. It preserves fossils dating back to the Paleogene to Neogene period Period may refer to: Common uses * Era, a length or span of time * Full stop (or period), a punctuation mark Arts, entertainment, and media * Period (music), a concept in musical composition * Periodic sentence (or rhetorical period), a concept .... The area is where the type specimen of Basilosaurus and ancient whale confused to be a reptile was found. See also * List of fossiliferous stratigraphic units in North Carolina References * Geologic groups of Arkansas Paleogene Arkansas Paleogene geology of North Carolina {{Arkansas-geologic-formation-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Imo Formation
The Imo Formation, or Imo Shale, is a geologic unit in northern Arkansas that dates to the Chesterian, Chesterian Series of the late Mississippian (geology), Mississippian. The Imo is considered to be a Stratigraphic unit#Member, member of the upper Pitkin Formation, and is the most recent Mississippian age rock in Arkansas. The Imo Shale unconformably underlies the Pennsylvanian age Hale Formation The stratigraphic placement of this interval has long been debated. It was introduced in 1964 as the "Imo Formation," representing an interval of shale that was presumably of Mississippian and possibly of Pennsylvanian (geology), Pennsylvanian age. However, in a footnote in the first publication to use this designation, the author noted that the shale interval had been mapped into the Pennsylvanian Cane Hill Member of the Hale Formation and revoked use of the name "Imo Formation". The name was reintroduced in 1973 as the "Imo Shale", and in 2010 was classified as a member (geology), me ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hindsville Member Of Batesville Formation
Hindsville is a town in Madison County, Arkansas, United States. The population was 90 at the 2020 census. It is part of the Northwest Arkansas region. The community was named after John Hinds, a first settler. Geography Hindsville is located in northwestern Madison County at (36.147644, -93.860271). In 2007, U.S. Highway 412 was widened to four lanes and now bypasses the town completely. Via US 412 it is west to Springdale and southeast to Huntsville, the Madison county seat. According to the United States Census Bureau, Hindsville has a total area of , of which , or 0.53%, are water. The town is drained by Whitener Branch, a west-flowing tributary of the White River. Hindsville Lake, west of the town, is one of the oldest reservoirs in Arkansas. While Lake Conway was the first in the state to be commissioned by the Arkansas Game and Fish Commission, Lake Hindsville was the first to be built, with its construction completed in March 1950 before bids on Lake Conway h ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hale Formation
The Hale Formation is a Formation (geology), geologic formation in northern Arkansas that dates to the Pennsylvanian (geology)#Subdivisions, Morrowan Series of the early Pennsylvanian (geology), Pennsylvanian.Various Contributors to the Paleobiology Database. "Fossilworks: Gateway to the Paleobiology Database". Archived from the original on 31 July 2014. Retrieved 8 July 2014. The Hale Formation has two named members: the Cane Hill and the Prairie Grove Members. The lower member is the Cane Hill, a primarily sandstone and shale interval that unconformably overlies the Mississippian (geology), Mississippian-age Pitkin Formation. The upper member, the Prairie Grove Member, is predominately limestone and conformably underlies the Bloyd Formation. Nomenclature Named by J. A. Taff in 1905, the Hale Formation was originally called the "Hale sandstone lentil" of the Morrow Formation after Hale Mountain in Washington County, Arkansas, Washington County, Arkansas. In the same year, George I ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fayetteville Shale
The Fayetteville Shale is a geologic formation of Mississippian age (354–323 million years ago) composed of tight shale within the Arkoma Basin of Arkansas and Oklahoma. It is named for the city of Fayetteville, Arkansas, and requires hydraulic fracturing to release the natural gas contained within. Nomenclature Named by Frederick Willard Simonds in 1891, Simonds recognized what is now the Fayetteville Shale as three separate formations overlying the now abandoned Wyman Sandstone: the Fayetteville Shale, the Batesville Sandstone, and the Marshall Shale. In 1904, the name "Fayetteville Shale" replaced all three of these names. The Fayetteville Shale that Simonds recognized is now considered as the lower Fayetteville Shale. Simonds' Batesville Sandstone was found to be the same as the Wyman Sandstone, and replaced the name "Wyman Sandstone", while Simonds' Batesville Sandstone became known as the "Wedington Sandstone Member" presumably after Wedington Mountain. The name Marshall ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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