| McColley Canyon Formation Stratigraphic range: Devonian | |
|---|---|
| Type | Formation |
| Sub-units | Kobeh Member, Bartine Member, and Coils Creek Limestone [1] |
| Location | |
| Region | Nevada |
| Country | United States |
The McColley Canyon Formation is a geologic formation in Nevada. It preserves fossils dating back to the Devonian period. [2]
The Sonoma orogeny was a period of mountain building in western North America. The exact age and structure of the Sonoma orogeny is controversial. The orogeny is generally thought to have occurred during the Permian / Triassic transition, around 250 million years ago, following the Late Devonian Antler orogeny. The Sonoma orogeny was one of a sequence of accretionary events along the Cordilleran margin, possibly caused by the closure of the basin between the island arc of Sonomia and the North American continent. Evidence of this event has been reported throughout western North America, but most distinctly in northwest Nevada.
Ochotona spanglei is an extinct species of pika, known from Late Miocene - Early Pliocene fossil from Oregon (USA). Fossils were also found in Nebraska referred to as Ochotona cf. spanglei.
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 Sonyea Group is a geologic group in the northern part of the Appalachian Basin. It preserves fossils dating back to the Devonian period.
The Hoback Formation is a geologic formation in west-central Wyoming, located within the Hoback Basin. It formed as a result of increased sedimentation rates from the Laramide Orogeny and preserves fossils dating back to the late Paleogene period, through the early Eocene.
The Virgin Formation is a geologic formation in Utah. It preserves fossils dating back to the Triassic period.
The Denay Limestone is a geologic formation in Nevada. It preserves fossils dating back to the Devonian period.
The Devils Gate Limestone is a limestone geologic formation in Nevada.
The Guilmette Formation is a geologic formation in Nevada. It preserves fossils dating back to the Devonian period.
The McMonnigal Limestone is a geologic formation in Nevada. It preserves fossils dating back to the Devonian period.
The Piute Formation is a geologic formation in Nevada. It preserves fossils dating back to the Devonian period.
The Rabbit Hill Limestone is a geologic formation in Nevada. It preserves fossils dating back to the Devonian period.
The Sultan Formation is a geologic formation in Nevada. It preserves fossils dating back to the Devonian period.
The Telegraph Canyon Formation is a geologic formation in Nevada. It preserves fossils dating back to the Devonian period.
The Tor Limestone is a geologic formation in Nevada. It preserves fossils dating back to the Devonian period.
The Windmill Limestone is a geologic formation in Nevada. It preserves fossils dating back to the Devonian period.
The Coils Creek Limestone is a geologic formation in Nevada. It preserves fossils dating back to the Devonian period.
The Vinini Formation is a marine, deep-water, sedimentary deposit of Ordovician to Early Silurian age in Nevada, U.S.A. It is notable for its highly varied, mainly siliceous composition, its mineral deposits, and controversies surrounding both its depositional environment and structural history. The formation was named by Merriam and Anderson for an occurrence along Vinini Creek in the Roberts Mountains of central Nevada and that name is now used extensively in the State.
The Nevada Group is an abandoned term for a geologic group in Nevada. The group, reflected a collection of rocks then thought to preserve fossils dating back to the Devonian period.
The West Range Limestone is a geologic formation in Nevada. It preserves fossils dating back to the Devonian period.
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