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Geologic formation in the United States
Devonian Brallier Formation is a mapped bedrock unit in Pennsylvania, Maryland, West Virginia, and Virginia in the United States. The Brallier Formation was
Brallier_Formation
Middle Devonian age unit of sedimentary rock
deep water depositional sequences formed the overlying Brallier Formation and Harrell Formation. The shale contains largely untapped natural gas reserves
Marcellus_Formation
Widespread geologic group in the Southeastern United States
The Knox Supergroup, also known as the Knox Group and the Knox Formation, is a widespread geologic group in the Southeastern United States. The age is
Knox_Supergroup
Geologic group in the Appalachian Basin, U.S.
Group.[citation needed] The West Falls formation is bounded above by the Java Group and below by the Sonyea Formation. It comprises the Angola Shale and Rhinestreet
West_Falls_Group
Geologic group
shale formations are included between the Cashaqua and Middlesex members, including Rye Point Shale, Rock Stream Formation ("Enfield Formation") Siltstone
Sonyea_Formation
Large Geologic Group
The Salina Group or Salina Formation is a Late Silurian-age, stratigraphic unit of sedimentary rock that is found in Northeastern and Midwestern North
Salina_Group
Geological Group in North America
shale of the Onondaga Formation, or chert of the Huntersville Chert. The Hamilton Group lies conformably below the Brallier Formation (formerly Woodmont
Hamilton_Group
Unit of sedimentary rock in the US
The Devonian Catskill Formation or the Catskill Clastic Wedge is a unit of mostly terrestrial sedimentary rock found in Pennsylvania and New York. Minor
Catskill_Formation
Cambrian era geologic formation in Tennessee, United States
The Rome Formation is a geologic formation in Alabama, Georgia, and Tennessee. It preserves fossils dating back to the Cambrian period. Earth sciences
Rome_Formation
Hard limestones rock formation in North America
it outcrops; in others, especially its Southern Ontario portion, the formation can be less prominent as a local surface feature.[citation needed] In
Onondaga_Limestone
Geologic formation in West Virginia, United States
The Oswego Formation is a geologic formation in West Virginia. It dates back to the Ordovician period. Earth sciences portal Paleontology portal Paleozoic
Oswego_Formation
Geologic formation in West Virginia, Pennsylvania, and Ohio, United States
The Monongahela Formation is a geologic formation in West Virginia, Pennsylvania, Ohio, and Maryland. It is dated to the Carboniferous period. The top
Monongahela_Formation
Geological formation in Pennsylvania
The Kinzers Formation is a geologic formation in Pennsylvania. It preserves fossils dating back to the fourth stage of the Cambrian Period. The base of
Kinzers_Formation
Geologic Group found in the Appalachian Basin
Helderberg Mountains. The upper portion of the Helderberg, or the Kalkberg Formation is host to the Bald Hill ash bed, dated to 417.6 million years ago. The
Helderberg_Group_(geology)
Geologic group in Eastern and Midwestern, USA
areas where this Geologic Unit thins it is also called the Black River Formation (undifferentiated). One example of this is over the Cincinnati Arch and
Black_River_Group
Geologic formation in the eastern US
closely associated with the Harpers Formation, Weverton Formation, and the Loudoun Formation. The Catoctin Formation lies over a granitic basement rock
Catoctin_Formation
Widespread shallow marine limestone
thin bedded deep water limestone. The formation is composed of thin interbedded wackestone and shale. This formation can be organic rich in parts and sub
Trenton_Group
Geologic Unit found in the Appalachian Basin
The Tully Formation is a geologic unit in the Appalachian Basin. The Tully was deposited as a carbonate rich mud, in a shallow sea at the end of the Middle
Tully_Formation
Bedrock formation in the United States
The Ordovician Juniata Formation is a mapped bedrock unit in Pennsylvania, West Virginia, Virginia, Tennessee, and Maryland. It is a relative slope-former
Juniata_Formation
Limestone bedrock unit in the Eastern United States
The Late Silurian to Early Devonian Keyser Formation is a mapped limestone bedrock unit in Pennsylvania, Maryland, Virginia, and West Virginia. The Keyser
Keyser_Formation
Geological formation in Ontario, Canada
Bertie Limestone, also referred to as the Bertie Dolomite and the Bertie Formation, is an upper Silurian (Pridoli, or Cayugan) geologic group and Lagerstätte
Bertie_Group
Geologic formation in the United States
The Harpers Formation is a geologic formation in Maryland, Pennsylvania, Virginia, and West Virginia, consisting of schist, phyllite, and shale. It dates
Harpers_Formation
Geologic formation in the United States
The Ludlowville Formation is a geologic formation in New York, Ohio and Pennsylvania. It is the Middle Formation of the Hamilton Group. It dates to the
Ludlowville_Formation
Geologic formation in the United States
The Schoharie Formation is a Devonian formation found in outcrop in New York, New Jersey, Pennsylvania, and Virginia. Also known as the "Schoharie Grit"
Schoharie_Formation
[[Silurian]] aged formation
The Irondequoit Formation is a geologic formation in the Eastern United States and Canada. The Irondequoit is a mapped unit of Limestone with outcrops
Irondequoit_Formation
Geological formation in the United States
Formation mapped sedimentary bedrock unit in Pennsylvania, Maryland, and West Virginia, of Pennsylvanian age. It is the uppermost of two formations in
Casselman_Formation
Geologic formation
The New River Formation is a geologic formation in West Virginia. It preserves fossils dating back to the Carboniferous period. Earth sciences portal
New_River_Formation
Geologic formation in the United States
The Late Silurian Tonoloway Formation is a mapped limestone bedrock unit in Pennsylvania, Maryland, Virginia and West Virginia. The Tonoloway is roughly
Tonoloway_Formation
Geological formation in the United States
The Devonian Mahantango Formation is a mapped bedrock unit in Pennsylvania, West Virginia, and Maryland. It is named for the North branch of the Mahantango
Mahantango_Formation
Geologic formation in the United States
The Rhinestreet Shale is a geologic formation in the Appalachian Basin. It dates back to the Devonian period. The Rhinestreet is an organic or Black Shale
Rhinestreet_Formation
Mapped unit of rock in North America
The Clinton Group (also referred to as the Clinton Formation or the Clinton Shale) is a mapped unit of sedimentary rock found throughout eastern North
Clinton_Group
Devonian geologic unit in the Appalachian basin
The Genesee Formation (Group) is a geologic formation in New York. It is equivalent the Harrell Shale in Pennsylvania. It dates back to the Upper Devonian
Genesee_Formation
Geologic formation in the United States
The Swift Run Formation is a geologic formation in Virginia and West Virginia. It dates back to the Neoproterozoic. Earth sciences portal Virginia portal
Swift_Run_Formation
Geologic formation in West Virginia, United States
The Bluefield Formation is a geologic formation in West Virginia. It preserves fossils dating back to the Mississippian subperiod of the Carboniferous
Bluefield_Formation
Pennsylvanian-age geological unit
The Allegheny Group, often termed the Allegheny Formation, is a Pennsylvanian-age geological unit in the Appalachian Plateau. It is a major coal-bearing
Allegheny_Group
The Vernon Formation is a geologic formation in the Appalachian Basin. It is the lowest unit of the Salina Group. It is made up of red and green shales
Vernon_Formation
Geologic formation in the United States
The Huntersville Chert or Huntersville Formation is a Devonian geologic formation in the Appalachian region of the United States. It is primarily composed
Huntersville_Chert
Geologic formation in the eastern United States
The Ordovician Martinsburg Formation (Om) is a mapped bedrock unit in Pennsylvania, New Jersey, Maryland, Virginia, and West Virginia. It is named for
Martinsburg_Formation
Geological formation in the eastern U.S.
The Mississippian Pocono Formation is a mapped bedrock unit in Pennsylvania, Maryland, and West Virginia, in the United States. It is also known as the
Pocono_Formation
American geologic formation
The Washington Formation is a coal, sandstone, and limestone geologic formation located in Ohio, Pennsylvania and West Virginia. It dates back to the Lower
Washington_Formation
Geologic formation in the United States
Sandstone is a sandstone geologic formation in West Virginia, Virginia, Pennsylvania, and Maryland. The formation includes the Cedar Creek Limestone
Williamsport_Formation
Geologic formation in West Virginia, United States
The Bluestone Formation is a geologic formation in West Virginia. It is the youngest unit of the Upper Mississippian-age Mauch Chunk Group. A pronounced
Bluestone_Formation
Sandstone formation in the United States
Berea Sandstone, also known as Berea Grit, is a sandstone formation in the U.S. states of Michigan, Ohio, Pennsylvania, West Virginia, and Kentucky. It
Berea_Sandstone
Geologic formation in the United States
The Antietam Formation or Antietam Sandstone is a geologic formation in Pennsylvania, Maryland, West Virginia, Virginia, and Tennessee.. In Virginia and
Antietam_Formation
Geologic group in West Virginia, United States
Shale Brallier Formation Frasnian Brallier Formation Java Formation West Falls Formation Rhinestreet Sonyea Formation Harrell Shale Genesee Formation Middle
Conasauga_Group
Geologic formation in the United States
The Middlesex Formation is a carbon rich black shale geologic formation found in the Appalachian Basin. It represents one of several transgressive events
Middlesex_Formation
Geologic formation in Michigan
The Bois Blanc Formation is a geologic formation in Michigan. It preserves fossils dating back to the Devonian period. Earth sciences portal Michigan
Bois_Blanc_Formation
Geologic formation in the United States
be found further east where the Venango interfingers with the Catskill Formation. There are three major sand members of the Venango in ascending order;
Venango_Group
Geologic formation in West Virginia, United States
The Hinton Formation is a geologic formation in West Virginia. It preserves fossils dating back to the Carboniferous period. It is mainly made up of limestone
Hinton_Formation
Lithostratigraphic unit
grainstones. Numerous solution caves are developed within the Greenbrier Formation. List of types of limestone Geology of West Virginia Haught, O.L. (1968)
Greenbrier_Group
Geologic formation in West Virginia, United States
The Pocahontas Formation is a coal-bearing geologic formation in West Virginia. It preserves fossils dating back to the Carboniferous period. Earth sciences
Pocahontas_Formation
The Price Formation is a geologic formation in Virginia and West Virginia. It preserves fossils dating back to the Carboniferous period. Earth sciences
Price_Formation
Geologic formation in Pennsylvania, United States
also a lateral equivalent of the Foreknobs Formation and underlying Scherr Formation. The Brallier Formation usually underlies the Lock Haven. The Minnehaha
Lock_Haven_Formation
Geological formation in the United States
The Bowen Formation is an Ordovician-age geological formation in the Appalachian region of the eastern United States. It occupies a thin stratigraphic
Bowen_Formation
Dunkard contains three formation. Starting at the base (oldest) is the Waynesburg Formation, Washington Formation, and Greene Formation. The base is marked
Dunkard_Group
Geological formation in the United States
Devonian Foreknobs Formation is a mapped bedrock unit in Pennsylvania, Maryland, Virginia, and West Virginia. The Foreknobs Formation contains massive sandstones;
Foreknobs_Formation
The Hampshire Formation is a geologic formation in West Virginia, USA. It preserves fossils dating back to the Devonian period. Earth sciences portal
Hampshire_Group
Carboniferous era eologic formation in West Virginia
The Maccrady Formation is a geologic formation in West Virginia. It preserves fossils dating back to the Carboniferous period. Earth sciences portal Paleontology
Maccrady_Formation
Geologic formation in the United States
group in New York and Northern Pennsylvania. It is considered geologic formation in Kentucky, Western New York, Ohio, southern and western Pennsylvania
Java_Group
Geologic formation in Virginia, United States
The Edinburg Formation is an Ordovician-age geological formation in Virginia. It is primarily composed of basinal (deep sea) limestone and shale, and
Edinburg_Formation
North American geological formation
The St. Peter Sandstone is an Ordovician geological formation. It belongs to the Chazyan stage of the Champlainian series in North American regional stratigraphy
St._Peter_Sandstone
Geologic group in the eastern United States
Shale Brallier Formation Frasnian Brallier Formation Java Formation West Falls Formation Rhinestreet Sonyea Formation Harrell Shale Genesee Formation Middle
Conemaugh_Group
Geologic formation in New York, United States
The Sodus Formation is a geologic formation in New York. It preserves fossils dating back to the Silurian period. Earth sciences portal New York (state)
Sodus_Formation
Devonian Millboro Shale, the Romney Formation (now Marcellus Shale), the Brallier Formation, and the Trimmers Rock Formation. However, similar barrens have
Shale_barrens
The Silurian Bloomsburg Formation is a mapped bedrock unit in Pennsylvania, New Jersey, New York and Maryland. It is named for the town of Bloomsburg
Bloomsburg_Formation
Fossiliferous statigraphic unit
The Tomstown Dolomite or Tomstown Formation is a geologic formation in Maryland, Pennsylvania, Virginia and West Virginia. It preserves fossils dating
Tomstown_Dolomite
The Rockwell Formation is a late Devonian and early Mississippian mapped bedrock unit in West Virginia, Maryland, and Pennsylvania, in the United States
Rockwell_Formation
Rock formation in the United States
contains four formations; the Loudoun Formation, Weverton Formation, Harpers Formation and Antietam Formation. Another name for the Harpers formations is the
Chilhowee_Group
Bedrock unit in Pennsylvania, Maryland, West Virginia, and Virginia, US
The Silurian Tuscarora Formation — also known as Tuscarora Sandstone or Tuscarora Quartzite — is a mapped bedrock unit in Pennsylvania, Maryland, West
Tuscarora_Sandstone
Pennsylvania Geologic Formation
The Ordovician Bellefonte Formation is a mapped bedrock unit in central Pennsylvania. It is the uppermost unit of the Beekmantown Group. The top of the
Bellefonte_Formation
above the Tully Limestone member of the Mahantango Formation. The geographical extent of the formation includes southern New York, Pennsylvania, eastern
Burket_Shale
Stratigraphic range: Devonian Type Group Underlies Hampshire Formation Overlies Brallier Formation Location Country United States Extent Maryland and West
Greenland_Gap_Group
Mapped bedrock in the United States
The Devonian Harrell Formation is a mapped bedrock unit in Pennsylvania, Maryland, West Virginia, and Virginia. The Harrell Formation was first described
Harrell_Shale
Bedrock unit in the Eastern United States
Wills Creek Formation is a mapped Silurian bedrock unit in Pennsylvania, Maryland, Virginia, and West Virginia. The Wills Creek is defined as a moderately
Wills_Creek_Formation
Stratigraphical unit of Upper Ordovician age in the Appalachian Basin
Shale Brallier Formation Frasnian Brallier Formation Java Formation West Falls Formation Rhinestreet Sonyea Formation Harrell Shale Genesee Formation Middle
Utica_Shale
Geologic formation in Iowa, USA
The Hampton Formation is a geologic formation in Iowa. It preserves fossils dating back to the Carboniferous period. Earth sciences portal Iowa portal
Hampton_Formation
A carbonate unit in the Appalachian Basin and Cincinnati arch
is a geologic formation in with exposures in Kentucky, Tennessee and West Virginia. It dates back to the Ordovician period. This formation rests unconformably
Wells_Creek_Dolomite
Pennsylvania. The rocks are listed in stratigraphic order. Note: Some of the Formations are laterally equivalent in age. They are listed in order from West to
List of mapped rock formations in Pennsylvania
List_of_mapped_rock_formations_in_Pennsylvania
Geologic formation in West Virginia
The Princeton Sandstone is a geologic formation in West Virginia. It preserves fossils dating back to the Carboniferous period. Earth sciences portal
Princeton_Sandstone
Geological formation in West Virginia, US
The Kanawha Formation is a geologic formation in West Virginia. It preserves fossils dating back to the Carboniferous period. Earth sciences portal Paleontology
Kanawha_Formation
Geologic formation in the United States
The Waynesboro Formation is a limestone, dolomite, and sandstone geologic formation in Virginia, Maryland, Pennsylvania and West Virginia. In some areas
Waynesboro_Formation
The Cussewago Formation is a geologic formation found Pennsylvania, Ohio and West Virginia. This formation represents a paleo-river delta containing sandstone
Cussewago_Formation
Ichnogenus of trace fossils
but can also made by other arthropods. Cruziana appears in non-marine formations such as the Beacon Supergroup that would have been unsuitable environments
Cruziana
Geologic formation in Michigan, United States
The Sunbury Shale is a geologic formation in Michigan. It preserves fossils dating back to the Mississippian period. Earth sciences portal Michigan portal
Sunbury_Shale
Geological formation in the United States
The Bedford Shale is a shale geologic formation in the states of Ohio, Michigan, Pennsylvania, Kentucky, West Virginia, and Virginia in the United States
Bedford_Shale
Geologic formation in Ohio
The Ohio Shale is a geologic formation in Ohio. It preserves fossils dating back to the Devonian period. Earth sciences portal Ohio portal Paleontology
Ohio_Shale
Geologic formation in Michigan
The Bass Islands Formation is a geologic formation in Michigan. It preserves fossils dating back to the Silurian period. Michigan portal Paleontology
Bass_Islands_Formation
Geologic group in West Virginia, United States
Shale Brallier Formation Frasnian Brallier Formation Java Formation West Falls Formation Rhinestreet Sonyea Formation Harrell Shale Genesee Formation Middle
St._Paul_Group
Rock formation in the USA
The Ordovician Reedsville Formation is a mapped surficial bedrock unit in Pennsylvania, Maryland, Virginia, West Virginia, and Tennessee, that extends
Reedsville_Formation
Marylander mapped bedrock unit
The Silurian McKenzie Formation is a mapped bedrock unit in Maryland. The McKenzie Formation is a gray, thin-bedded shale and argillaceous limestone, with
McKenzie_Formation
Geologic formation in West Virginia
The Elbrook Formation is a geologic formation in West Virginia, Maryland, and Pennsylvania. It dates back to the Cambrian period. Fossils of trilobite
Elbrook_Formation
Carboniferous period geologic formation in Appalachia and Southeastern United States
Commons has media related to Fort Payne Formation. The Fort Payne Formation, or Fort Payne Chert, is a geologic formation found in the southeastern region of
Fort_Payne_Formation
American geological formation
The Lincolnshire Formation, often known as the Lincolnshire Limestone, is an Ordovician-age geological formation in the Appalachian region of the Eastern
Lincolnshire_Formation
Mapped bedrock unit
The Mississippian Mauch Chunk Formation is a mapped bedrock unit in Pennsylvania, Maryland, and West Virginia. It is named for the township of Mauch Chunk
Mauch_Chunk_Formation
Township in Pennsylvania, US
Henderson Township, Huntingdon County, Pennsylvania Township Brallier Formation near PA 26 in Henderson Township Map of Huntingdon County, Pennsylvania
Henderson Township, Huntingdon County, Pennsylvania
Henderson_Township,_Huntingdon_County,_Pennsylvania
Geological formation in the United States
The Chagrin Shale is a shale geologic formation in the eastern United States that is approximately 365 million years old. The Chagrin Shale is a gray
Chagrin_Shale
Geological formation in the United States
The Rockdale Run Formation is a geologic formation in Maryland, Pennsylvania, Virginia and West Virginia. It preserves fossils dating back to the Ordovician
Rockdale_Run_Formation
Bedrock unit in Pennsylvania, United States
Huntley Mountain Formation is a late Devonian and early Mississippian mapped bedrock unit in Pennsylvania, in the United States. The formation is composed
Huntley_Mountain_Formation
Carboniferous Bluestone Formation Carboniferous Bowen Formation Ordovician Brallier Formation Devonian Bull Run Formation Triassic Calvert Formation Neogene Cassville
List of fossiliferous stratigraphic units in Virginia
List_of_fossiliferous_stratigraphic_units_in_Virginia
Needmore Formation or Needmore Shale is a mapped bedrock unit in Pennsylvania, Maryland, Virginia, and West Virginia. The Needmore Formation was originally
Needmore_Shale
BRALLIER FORMATION
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