Muscatatuck Group#North Vernon Limestone
{{Short description|The North Vernon Limestone is a geologic formation in Indiana}}
{{Infobox rockunit
| name = Muscatatuck Group
| image =
| caption =
| type = Group
| age = Devonian
| period = Devonian
| prilithology =Dolomite, limestone
| otherlithology =Sandstone Anhydrite Gypsum
| namedfor =Its many exposures along the Muscatatuck River
| namedby =Shaver, 1974
| region = Indiana, Illinois, Kentucky
| country = United States
| coordinates =
| unitof =
| subunits =; Northern Indiana
; Southern Indiana, Illinois and Kentucky
- North Vernon Limestone
- Beechwood Limestone
- Silver Creek Limestone
- Speed Member
- Jeffersonville Limestone
- Dutch Creek Sandstone Member
- Geneva Dolomite Member
- Vernon Fork Member
- Fraunfelter
| underlies = New Albany Shale and Antrim Shale in Northern Indiana
| overlies = New Harmony Group in Southern Indiana
Wabash Formation (Salina Group) Elsewhere
| thickness =
| extent =
| area =
| map =
| map_caption =
}}
The Muscatatuck Group is a Middle Devonian Aged unit found in Illinois, Indiana and Kentucky. It is characterized by being predominantly made up of Dolomite and limestone. {{Cite journal |last=Shaver |first=Robert |date=1974 |title=The Muscatatuck Group (New Middle Devonian Name) in Indiana |url=https://scholarworks.iu.edu/dspace/bitstreams/144eb470-73df-46b4-9cb7-8471986bd5c1/download |journal=Department of Natural Resources Geologic Survey |volume=3}}
Stratigraphy
The Muscatatuck underlies the New Albany Shale throughout of its extent, except in Northern Indiana where it underlies the Antrim Shale.
The North Vernon Limestone is a geologic formation in Indiana. Also called the Sellersburg Limestone, this term however is no longer in use.{{Cite journal |last=Shaver |first=R.H. |last2=Burger |first2=A.M. |date=1970 |title=Compendium of rock-unit stratigraphy in Indiana |journal=USGS |volume=Bulletin 43 |via=National Geologic Map Database}} Originally called "Corniferous Limestone" it was defined as the unit between the New Albany Shale and the Jeffersonville Lime. The North Vernon has two members.
The Beechwood Limestone Member. Defined by its Crinoidal Beds.
The Silver Creek Member is massive and mostly grey, often argillaceous.
The Speed member is a shaley limestone.
The Jeffersonville Limestone is a coarse grained, dark gray, thick bedded, fossiliferous limestone.
Industrial Products
Quarries in Pulaski and Shelby Counties produce Agricultural lime, agragrate (crushed stone) and rip rap. Also mined are Portland cement products, industrial lime and Pugmill
Several counties produce oil from the Muscatatuck in Indiana. {{Cite web |title=Muscatatuck Group |url=https://legacy.igws.indiana.edu/IGNIS/GeoNamesDetails.cfm?ID=80F7122D-9750-4BE3-B970-2A94FB05A38B |access-date=2024-03-01 |website=legacy.igws.indiana.edu |language=en}}
References
{{reflist}}
{{Devonian footer|state=expanded}}
Category:Geologic groups of Indiana
Category:Geologic groups of Illinois
Category:Geologic groups of Kentucky
Category:Limestone groups of the United States
Category:Sandstone groups of the United States
{{Chronostratigraphy of Illinois}}
{{Chronostratigraphy of Indiana}}