| Whitesburg Formation | |
|---|---|
| Stratigraphic range: Ordovician | |
| Type | Formation |
| Sub-units | Fetzer member |
| Lithology | |
| Primary | limestone |
| Other | shale |
| Location | |
| Region |  Tennessee,  Virginia |
| Country |  United States |
| Type section | |
| Named for | Whitesburg, Tennessee |
| Named by | E.O. Ulrich [1] |
The Whitesburg Formation is a dark limestone with interbedded shales geologic formation in Tennessee and Virginia. [1] It preserves fossils dating back to the Ordovician period.
The Whitesburg Formation was formally proposed in 1930, though E.O. Ulrich had used the name prior to the formal proposal. [1] The Whitesburg formation was later downgraded to the Whitesburg limestone, and was considered a basal member of the Blockhouse Shale. [2] The Whitesburg Formation was then elevated back to formation status with the Fetzer member assigned as the basal member. [3] The Fetzer is not considered to be a continuous body of rock, and exists in the Whitesburg formation as lenses.
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, sandstone, and shale.
The Tyrone Limestone is a geologic formation in Kentucky. It preserves fossils dating back to the Ordovician period. The formation is predominantly limestone and shale.
The Leipers Limestone is a geologic formation in Kentucky, Tennessee, Alabama and Georgia. It preserves fossils dating back to the Ordovician Period.
The Black River Group is a geologic group that covers three sedimentary basins in the Eastern and Midwestern United States. These include the Appalachian Basin, Illinois Basin and the Michigan Basin. It dates back to the Late Ordovician period. It is roughly equivalent to the Platteville Group in Illinois. In Kentucky and Tennessee it is also known as the High Bridge Group. In 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 Findley Arch. Large parts of the Black River have been dolomized (where the parent limestone CaCO3 has been turned into dolomite CaMg(CO3)2.) This happed when there was interaction of hot saline brine and the limestone. This created hydrothermal dolomites that in some areas serve as petroleum reservoirs.
The Lenoir Limestone is a geologic formation in Virginia. It preserves fossils dating back to the Ordovician period.
The Mosheim Limestone is a geological formation in Virginia. It preserves fossils dating back to the Ordovician period.
The Moccasin Formation is a geologic formation in Virginia and Tennessee. It preserves fossils dating back to the Ordovician period.
The Oranda Formation is a geologic formation in Virginia. It preserves fossils dating back to the Ordovician period.
The Bowen Formation is an Ordovician-age geological formation in the Appalachian region of the eastern United States. It occupies a thin stratigraphic range between the Wardell and Witten formations in some areas of southwest Virginia and northeast Tennessee. It is particularly well-exposed in Tazewell County, Virginia. Unlike its encompassing strata, the Bowen Formation is mostly calcareous sandstone and mudrock rather than limestone. The thicker upper part of the formation is composed of layered red mudrock which is replete with mudcracks. The thinner lower part, which is not always preserved, is a coarser unit of dark grey stratified sandstone which weathers to a rusty-brown color. Fossils are rare, restricted to stromatolites and Tetradium fibratum.
The Fernvale Limestone is a geologic formation in Alabama, Arkansas, Illinois, Missouri, Oklahoma, and Tennessee. It preserves fossils dating back to the Ordovician period.
The Hendersonville Shale is a geologic formation in Tennessee. It preserves fossils dating back to the Ordovician period.
The Lebanon Limestone is a geologic formation in Tennessee. It preserves fossils dating back to the Ordovician period.
The Murfreesboro Limestone is a geologic formation in Tennessee. It preserves fossils dating back to the Ordovician period.
The Pierce Limestone is a geologic formation in Tennessee. It preserves fossils dating back to the Ordovician period.
The Ridley Limestone is a geologic formation in Tennessee. It preserves fossils dating back to the Ordovician period.
The Java Formation is a geologic formation in Kentucky, New York, Ohio, Pennsylvania, Tennessee, Virginia, West Virginia. It preserves fossils dating back to the Devonian period. The formation comprises the Pipe Creek Shale, Wiscoy Sandstone Member in New York, and Hanover Shale Member except in Tennessee.
The Tomstown Dolomite or Tomstown Formation is a geologic formation in Maryland, Pennsylvania, Virginia and West Virginia. It preserves fossils dating to the Cambrian Period.
The Bloyd Formation, or Bloyd Shale, is a geologic formation in Arkansas. It preserves fossils dating back to the Carboniferous period.
The Mount Whyte Formation is a stratigraphic unit that is present on the western edge of the Western Canada Sedimentary Basin in the southern Canadian Rockies and the adjacent southwestern Alberta plains. It was deposited during Middle Cambrian time and consists of shale interbedded with other siliciclastic rock types and limestones. It was named for Mount Whyte in Banff National Park by Charles Doolittle Walcott, the discoverer of the Burgess shale fossils, and it includes several genera of fossil trilobites.
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 from the Late Cambrian to the Early Ordovician. Predominantly, it is composed of carbonates, chiefly dolomite, with some limestone. There are also cherty inclusions as well as thin beds of sandstone.
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