| Grand Bay Formation Stratigraphic range: Middle Miocene | |
|---|---|
| Type | Formation |
| Lithology | |
| Primary | Tuff |
| Other | Sandstone |
| Location | |
| Coordinates | 12°24′N61°24′W / 12.4°N 61.4°W Coordinates: 12°24′N61°24′W / 12.4°N 61.4°W |
| Approximate paleocoordinates | 12°06′N61°06′W / 12.1°N 61.1°W |
| Region | Carriacou |
| Country |  |
  Grand Bay Formation (Grenada) | |
The Grand Bay Formation is a geologic formation in Grenada. It preserves fossils dating back to the Middle Miocene period. [1]
Grenada is an island country located between the Caribbean Sea and Atlantic Ocean, north of Trinidad and Tobago. It is located at 12°07′N61°40′W. There are no large inland bodies of water on the island, which consists entirely of the state of Grenada. The coastline is 121 km long. The island has 15 constituencies and speaks English and Grenadian Creole. It is volcanic in origin and its topography is mountainous.
Carriacou is an island of the Grenadine Islands. It is a dependency of Grenada, and is located in the south-eastern Caribbean Sea, northeast of the island Grenada and the north coast of South America. The name is derived from the Carib language Kayryouacou.
Hemipristis is a genus of weasel sharks, family Hemigaleidae. It contains one extant species, the snaggletooth shark and several extinct species.
Cystiscinae are a taxonomic subfamily of minute sea snails. These are marine gastropod mollusks or micromollusks in the family Cystiscidae, and the clade Neogastropoda.
Grenada is a country in the West Indies in the Caribbean Sea at the southern end of the Grenadines island chain. Grenada consists of the island of Grenada itself, two smaller islands, Carriacou and Petite Martinique, and several small islands which lie to the north of the main island and are a part of the Grenadines. It is located northwest of Trinidad and Tobago, northeast of Venezuela and southwest of Saint Vincent and the Grenadines. Its size is 348.5 square kilometres (134.6 sq mi), and it had an estimated population of 112,523 in July 2020. Its capital is St. George's. Grenada is also known as the "Island of Spice" due to its production of nutmeg and mace crops.
Charactosuchus is an extinct genus of crocodilian. It was assigned to the family Crocodylidae in 1988. Specimens have been found in Colombia, Brazil, Jamaica, and possibly Florida and South Carolina. It was gharial-like in appearance with its long narrow snout but bore no relation to them, being more closely related to modern crocodiles than to gharials.
Metaphos is a genus of sea snails, marine gastropod mollusks in the family Nassariidae.
Petroxestes is a shallow, elongate boring originally found excavated in carbonate skeletons and hardgrounds of the Upper Ordovician of North America. These Ordovician borings were likely made by the mytilacean bivalve Corallidomus as it ground a shallow groove in the substrate to maintain its feeding position. They are thus the earliest known bivalve borings. Petroxestes was later described from the Lower Silurian of Anticosti Island (Canada) by Tapanila and Copper (2002) and the Miocene of the Caribbean by Pickerill et al. (2001).
Engoniophos is a genus of sea snails, marine gastropod mollusks in the subfamily of the family Nassariidae.
This list of fossil echinoderms described in 2014 is a list of new taxa of echinoderms of every kind that have been described during the year 2014. The list only includes taxa at the level of genus or species.
The Shoal River Formation is a geologic formation in Florida. The sandstones and marls of the formation preserve fossils dating back to the Serravallian epoch of the Middle Miocene of the Neogene period.
The Río Banano Formation is a geologic formation in Costa Rica of the Limón Group. It preserves fossils dating back to the Middle Miocene to Piacenzian period.
The Gatún Formation (Tg) is a geologic formation in the Colón and Panamá Provinces of central Panama. The formation crops out in and around the Panama Canal Zone. The coastal to marginally marine sandstone, siltstone, claystone, tuff and conglomerate formation dates to the latest Serravallian to Tortonian, from 12 to 8.5 Ma. It preserves many fossils, among others, megalodon teeth have been found in the formation.
The Culebra Formation (Tcb) is a geologic formation in Panama. It preserves fossils dating back to the Miocene period; Early Miocene epoch, Aquitanian to Burdigalian stages. Fossils of Culebrasuchus have been found in and named after the formation. The thickness of the formation is at least 250 metres (820 ft) thick, and the age has been estimated as from 23 to 19 Ma.
The Belmont Formation is a geologic formation in Grenada. It preserves fossils dating back to the Burdigalian period.
The Brasso Formation is a geologic formation in Trinidad and Tobago. It preserves fossils dating back to the Early Eocene to Serravallian period.
The geology of Grenada is part of the broader Volcanic Caribbees in the Lesser Antilles volcanic island arc. Rocks spanning much of the Cenozoic are exposed in the Grenadines Bank—a northeast-southwest trending shallow bank. Grenadite is common, especially in lower regions. Alkaline, magnesium rich basaltic rocks are common from the Pliocene through the Quaternary and form part of the active Kick'em Jenny volcano north of the island. The oldest rocks date to the Middle Eocene and include basalts overlain by turbidite deposits. During the Oligocene and Miocene, these rocks were folded and faulted.
The geology of Antigua and Barbuda is part of the Lesser Antilles volcanic island arc. Both islands are the above water limestone "caps" of now inactive volcanoes. The two islands are the surface features of the undersea Barbuda Bank and have karst limestone landscapes. Barbuda is primarily flat and formed from coral reefs. The Middle Miocene Highlands Formation has limestones which are the oldest rocks on the island, rising 120 feet above sea level. The Beazer Formation and the Codrington Formation are both from the Pleistocene and include reef and lagoon related rocks.
Marginocystiscus is an extinct genus of sea snails, marine gastropod mollusks, in the family Cystiscidae.
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