 |
| Mazantic Shale | |
|---|---|
| Stratigraphic range: Miocene, | |
| Type | Formation |
| Underlies | Balumtum Sandstone |
| Overlies | La Quinta Formation |
| Thickness | 310 m |
| Lithology | |
| Primary | Shale |
| Location | |
| Country | Mexico |
The Mazantic Shale is a geologic formation in Chiapas, Mexico. [1] It was deposited during the Early Miocene (Aquitanian). The formation comprises dark gray shales that were deposited in a marine environment. It preserves fossils, such as the turtle Allaeochelys liliae . Amber has been recovered from it. [2]
Allaeochelys is an extinct genus of Carettochelyid turtle, known from the Eocene to Miocene of Europe, Asia, North America and Africa.
The Mount Cap Formation is a geologic formation exposed in the Mackenzie Mountains, northern Canada. It was deposited in a shallow shelf setting in the late Early Cambrian, and contains an array of Burgess Shale-type microfossils that have been recovered by acid maceration.
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 Rochester Shale is a geologic formation exposed in New York and West Virginia. It preserves fossils dating back to the Silurian period.
The Ohio Shale is a geologic formation in Ohio. It preserves fossils dating back to the Devonian period.
The Moorefield Formation, or Moorefield Shale, is a geologic formation in northern Arkansas and eastern Oklahoma that dates to the Meramecian Series of the middle Mississippian. In Arkansas, this formation is generally recognized to have one member, the Ruddell Shale, in the upper Moorefield Formation.
The Winslow Formation was a geologic formation in Arkansas, now abandoned and replaced by the Atoka Formation, the Hartshorne Formation, and the lower McAlester Formation. It preserves fossils dating back to the Carboniferous period.
The Newcastle Sandstone is a geologic formation in Wyoming, United States. It preserves fossils dating back to the Late Cretaceous 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 Deseret Limestone, also known as the Pine Canyon Formation, is a geologic formation in Utah. It was formed by the Panthalassa ocean around 340 Ma. It preserves marine fossils dating back to the Carboniferous period or Mississippian age, mostly consisting of tabulate and rugose corals, and other marine invertebrates; vertebrates are represented by conodonts. The Deseret is a 500-foot thick layer of dolomitic limestone with chert, with a basal layer of black shale that is host rock for many Utah caves such as Timpanogos Cave National Monument.
The Virgin Formation is a geologic formation in Utah. It preserves fossils dating back to the Triassic 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 Méndez Shale is a geologic formation in Mexico. It preserves fossils dating back to the Cretaceous period.
The La Casita Formation is a geologic formation in Mexico. It preserves fossils dating back to the Kimmeridgian to lowermost Berriasian. It is laterally equivalent to the La Caja Formation and the Pimienta Formation. The ichthyosaurs Jabalisaurus and Acuetzpalin are known from the formation, as well as the metriorhynchid Dakosaurus and indeterminate pliosaurs.
The Taman Formation is a geologic formation in Mexico. It preserves fossils dating back to the Jurassic period. It was deposited in a "oxic to anoxic, shallow marine environment" The lithology predominantly consists of limestone and shale.
The Balumtun Sandstone is a geologic formation in Chiapas, Mexico. The formation is up to 760 metres thick, and consists of gray sandstone, that were deposited during the Upper Aquitanian stage of the Early Miocene.
The Ixtaclum Shale is a geologic formation in Mexico. It preserves fossils dating back to the Paleogene period.
The Messel Formation is a geologic formation in Hesse, central Germany, dating back to the Eocene epoch. Its geographic range is restricted to the Messel pit. There it unconformably overlies crystalline Variscan basement and its Permian cover (Rotliegend) as well as Eocene volcanic breccias derived from the basement rocks. The formation mainly comprises lacustrine laminated bituminous shale renowned for its content of fossils in exceptional preservation, particularly plants, arthropods and vertebrates.
The Cabot Head Shale is a geologic formation in Michigan. It preserves fossils dating back to the Silurian period.
 | This article about a specific stratigraphic formation in Mexico is a stub. You can help Wikipedia by expanding it. |
