| Rose Hill Formation Stratigraphic range: Telychian [1] | |
|---|---|
| Type | Formation |
| Underlies | Keefer Formation |
| Overlies | Tuscarora Formation |
| Location | |
| Region | Appalachia and Southeastern United States |
| Country | United States |
| Extent | Maryland, Virginia, and West Virginia, United States [2] |
The Rose Hill Formation is a geologic formation in West Virginia, United States. It preserves fossils dating back to the Silurian period, and is a source of iron ore for nearby foundries. [3]
The region has historically had numerous names by different geological agencies. West Virginia adopted the name Rose Hill Formation, and the name appears on the Geologic Map of West Virginia. [2]
The Aymestry Limestone is a fossiliferous limestone of Gorstian age deposited in a warm shallow sea near the eastern margin of the Iapetus Ocean. It occurs in England in the Ludlow Group, between the Upper and Lower Ludlow Shales. It derives its name from Aymestrey (sic), Herefordshire, where it may be seen on both sides of the River Lugg. It is well developed in the neighbourhood of Ludlow and occupies a similar position in the Ludlow shales at Woolhope, the Abberley Hills, May Hill and the Malvern Hills.
Wills Creek Formation is a mapped Silurian bedrock unit in Pennsylvania, Maryland, Virginia, and West Virginia.
The Keefer Sandstone is a geologic formation in West Virginia. It preserves fossils dating back to the Silurian period.
The Rochester Shale is a geologic formation exposed in New York and West Virginia. It preserves fossils dating back to the Silurian period.
The Keyser Limestone Formation is a geologic formation in West Virginia. It preserves fossils dating back to the Silurian period.
The Williamsport Sandstone is a sandstone geologic formation in West Virginia, Virginia, Pennsylvania, and Maryland. the formation includes the Cedar Creek Limestone member. Near Cumberland, Maryland it includes the Cedar Creek Limestone member. It preserves fossils dating back to the Silurian period.
The Washington Formation is a coal, sandstone, and limestone geologic formation in West Virginia. It preserves fossils dating back to the Permian period.
The Lockport Dolomite is a geologic formation in Ohio. It preserves fossils dating back to the Silurian period.
The Bisher Formation is a geologic formation in Ohio. It preserves fossils dating back to the Silurian period.
The Osgood Formation, also known as the Osgood Shale is a geologic formation in Indiana, Kentucky, and Ohio. It preserves fossils dating back to the Silurian period.
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 Clough Formation is a geologic formation in western New Hampshire. It preserves fossils dating back to the Silurian period. Prominent exposures include along the ridges of Croydon Mountain, Moose Mountain, Smarts Mountain, and Mount Cube.
The Bryant Knob Formation is a geologic formation in Missouri. It preserves fossils dating back to the Silurian period.
The Hunton Group is a stratigraphic group in Oklahoma. It preserves fossils dating back to the Devonian period.
The Roberts Mountains Formation is a geologic formation in Nevada and Idaho.
The Lone Mountain Dolomite is a dolomite geologic formation in Nevada.
The Manitoulin Dolomite is a geologic formation in Ontario. It preserves fossils dating back to the Silurian period.
The Stockdale Shales is a geologic formation in England. It preserves fossils dating back to the Silurian period.
The Downton Castle Sandstone is a geologic formation in England. It preserves fossils dating back to the Silurian period. As its name would suggest the formation predominantly consists of sandstone with minor siltstone and mudstone. The oldest known Trigonotarbid Palaeotarbus is known from the formation.
The Huntersville Chert or Huntersville Formation is a Devonian geologic formation in the Appalachian region of the United States. It is primarily composed of mottled white, yellow, and dark grey chert, and is separated from the underlying Oriskany Sandstone by an unconformity. The Huntersville Chert is laterally equivalent to the Needmore Shale, which lies north of the New River. It is also laterally equivalent to a sandy limestone unit which is often equated with the Onondaga Limestone. These formations are placed in the Onesquethaw Stage of Appalachian chronostratigraphy, roughly equivalent to the Emsian and Eifelian stages of the broader Devonian system.
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