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List Of Ancient Oceans
This is a list of former oceans that disappeared due to plate tectonics, tectonic movements and other geographical and climatic changes. In alphabetic order: List * Bridge River Ocean, the ocean between the ancient Insular Islands (that is, Stikinia) and North America * Cache Creek Ocean, a Paleozoic ocean between the Wrangellia Terrane, Wrangellia Superterrane and Yukon-Tanana Terrane * Iapetus Ocean, the Southern hemisphere ocean between Baltica and Avalonia * Kahiltna-Nutotzin Ocean, Mesozoic * Khanty Ocean, the Precambrian to Silurian ocean between Baltica and the Siberia (continent), Siberian continent * Medicine Hat Ocean, a small Proterozoic ocean basin * Mezcalera Ocean, the ocean between the Guerrero Terrane and Laurentia * Mirovia, the ocean that surrounded the Rodinia supercontinent * Mongol-Okhotsk Ocean, the early Mesozoic ocean between the North China craton, North China and Siberia cratons * Oimyakon Ocean, the northernmost part of the Mesozoic Panthalassa Ocean * Pal ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ocean
The ocean is the body of salt water that covers approximately 70.8% of Earth. The ocean is conventionally divided into large bodies of water, which are also referred to as ''oceans'' (the Pacific, Atlantic, Indian Ocean, Indian, Southern Ocean, Antarctic/Southern, and Arctic Ocean),"Ocean." ''Merriam-Webster.com Dictionary'', Merriam-Webster, https://www.merriam-webster.com/dictionary/ocean . Accessed March 14, 2021. and are themselves mostly divided into seas, gulfs and Lists of bodies of water#Seawater bodies, subsequent bodies of water. The ocean contains 97% of Water distribution on Earth, Earth's water and is the primary component of Earth's hydrosphere, acting as a huge Ocean heat content, reservoir of heat for Earth's energy budget, as well as for its carbon cycle and water cycl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Silurian
The Silurian ( ) is a geologic period and system spanning 23.5 million years from the end of the Ordovician Period, at million years ago ( Mya), to the beginning of the Devonian Period, Mya. The Silurian is the third and shortest period of the Paleozoic Era, and the third of twelve periods of the Phanerozoic Eon. As with other geologic periods, the rock beds that define the period's start and end are well identified, but the exact dates are uncertain by a few million years. The base of the Silurian is set at a series of major Ordovician–Silurian extinction events when up to 60% of marine genera were wiped out. One important event in this period was the initial establishment of terrestrial life in what is known as the Silurian-Devonian Terrestrial Revolution: vascular plants emerged from more primitive land plants, dikaryan fungi started expanding and diversifying along with glomeromycotan fungi, and three groups of arthropods ( myriapods, arachnids and hexapods) ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oimyakon Ocean
Oymyakon is a rural locality (a '' selo'') in Oymyakonsky District of the Sakha Republic, Russia, located in the Yana-Oymyakon Highlands, along the Indigirka River, northwest of Tomtor on the Kolyma Highway. Oymyakon is the coldest permanently inhabited human settlement on Earth. Etymology The settlement is named after the Oymyakon River, whose name reportedly comes from the Even word ''kheium'', meaning "unfrozen patch of water; place where fish spend the winter". However, another source states that the Even word ''heyum'' (hэjум, хэюм; ''kheium'' may be a misspelling), which means "frozen lake", may be where it gets its name. Geography Oymyakon has two main valleys beside it. These valleys trap wind inside the town and create a colder climate. The temperatures here are extremely cold for most of the year, and it snows frequently in spring and autumn, but rarely in summer and winter, due to the Siberian High in winter, and temperatures being commonly above in sum ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Siberia
Siberia ( ; , ) is an extensive geographical region comprising all of North Asia, from the Ural Mountains in the west to the Pacific Ocean in the east. It has formed a part of the sovereign territory of Russia and its predecessor states since the lengthy conquest of Siberia, which began with the fall of the Khanate of Sibir in 1582 and concluded with the annexation of Chukotka in 1778. Siberia is vast and sparsely populated, covering an area of over , but home to roughly a quarter of Russia's population. Novosibirsk, Krasnoyarsk, and Omsk are the largest cities in the area. Because Siberia is a geographic and historic concept and not a political entity, there is no single precise definition of its territorial borders. Traditionally, Siberia spans the entire expanse of land from the Ural Mountains to the Pacific Ocean, with the Ural River usually forming the southernmost portion of its western boundary, and includes most of the drainage basin of the Arctic Ocean. I ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mongol-Okhotsk Ocean
The Mongol-Okhotsk Ocean also known as the Khangai-Khantey Ocean was an ancient ocean, present during the Mesozoic. Oceanic rocks from the ancient ocean floor are preserved in the Mongol-Okhotsk suture zone extending through Mongolia to the Sea of Okhotsk. Sequence of events With the formation of the supercontinent Pangea in the mid- to late-Paleozoic, the vast Panthalassa ocean dominated 70 percent of the Earth's surface. The Tethys, Mongol-Okhotsk and various small domains of early Pacific Ocean crust constituted other small oceans. Paleomagnetic data collected between 1987 and 2010 suggest that the Mongol-Okhotsk oceanic crust subducted under the terranes of Mongolia in the Late Jurassic or Early Cretaceous. During the early Mesozoic, the Solonker Ocean, also known as the Intra-Asian Ocean closed bringing together two large continental blocks: Amuria and the North China Block. Amuria then collided with the Siberian Craton, preserving the Mongol-Okhotsk suture zone. Geologist ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Supercontinent
In geology, a supercontinent is the assembly of most or all of Earth's continent, continental blocks or cratons to form a single large landmass. However, some geologists use a different definition, "a grouping of formerly dispersed continents", which leaves room for interpretation and is easier to apply to Precambrian times. To separate supercontinents from other groupings, a limit has been proposed in which a continent must include at least about 75% of the continental crust then in existence in order to qualify as a supercontinent. Moving under the forces of plate tectonics, supercontinents have assembled and dispersed multiple times in the geologic past. According to modern definitions, a supercontinent does not exist today; the closest is the current Afro-Eurasian landmass, which covers approximately 57% of Earth's total land area. The last period in which the continental landmasses were near to one another was 336 to 175 million years ago, forming the supercontinent Pangaea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rodinia
Rodinia (from the Russian родина, ''rodina'', meaning "motherland, birthplace") was a Mesoproterozoic and Neoproterozoic supercontinent that assembled 1.26–0.90 billion years ago (Ga) and broke up 750–633 million years ago (Ma). were probably the first to recognise a Precambrian supercontinent, which they named "Pangaea I." It was renamed "Rodinia" by , who also were the first to produce a plate reconstruction and propose a temporal framework for the supercontinent. Rodinia formed at c. 1.23 Ga by accretion and collision of fragments produced by breakup of an older supercontinent, Columbia, assembled by global-scale 2.0–1.8 Ga collisional events.; Rodinia broke up in the Neoproterozoic, with its continental fragments reassembled to form Pannotia 633–573 Ma. In contrast with Pannotia, little is known about Rodinia's configuration and geodynamic history. Paleomagnetic evidence provides some clues to the paleolatitude of individual pieces of the Earth's crus ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mirovia
Mirovia or Mirovoi (from Russian мировой, ''mirovoy'', meaning "global") was a hypothesized superocean which may have been a global ocean surrounding the supercontinent Rodinia in the Neoproterozoic Era, about 1 billion to 750 million years ago. Mirovia may be essentially identical to, or the precursor of, the hypothesized Pan-African Ocean, which followed the rifting of Rodinia. The Panthalassa (proto-Pacific) Ocean developed in the Neoproterozoic Era by subduction at the expense of the global Mirovia ocean. Geologic evidence suggests that the middle Neoproterozoic, the Cryogenian period, was an extreme ice age so intense that Mirovia may have been completely frozen to a depth of 2 km. This is part of the Snowball Earth hypothesis. See also *Panthalassa Panthalassa, also known as the Panthalassic Ocean or Panthalassan Ocean (from Greek "all" and "sea"), was the vast superocean that encompassed planet Earth and surrounded the supercontinent Pangaea, the latest ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Laurentia
Laurentia or the North American craton is a large continental craton that forms the Geology of North America, ancient geological core of North America. Many times in its past, Laurentia has been a separate continent, as it is now in the form of North America, although originally it also included the cratonic areas of Greenland and the Hebridean terrane in northwest Scotland. During other times in its past, Laurentia has been part of larger continents and supercontinents and consists of many smaller terranes assembled on a network of early Proterozoic Orogenic belt, orogenic belts. Small microcontinents and oceanic islands collided with and Suture (geology), sutured onto the ever-growing Laurentia, and together formed the stable Precambrian craton seen today. Etymology The craton is named after the Laurentian Shield, through the Laurentian Mountains, which received their name from the St. Lawrence River, named after Saint Lawrence of Rome. Interior platform In eastern and centra ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Guerrero Terrane
Guerrero, officially the Free and Sovereign State of Guerrero, is one of the 32 states that compose the 32 Federal Entities of Mexico. It is divided into 85 municipalities. The state has a population of about 3.5 million people. It is located in southwest Mexico and is bordered by the states of Michoacán to the north and west, the State of Mexico and Morelos to the north, Puebla to the northeast and Oaxaca to the east. In addition to the capital city, Chilpancingo and the largest city Acapulco, other cities in Guerrero include Petatlán, Ciudad Altamirano, Taxco, Iguala, Ixtapa, and Zihuatanejo. Today, it is home to a number of indigenous communities, including the Nahuas, Mixtecs, Tlapanecs, Amuzgos, and formerly Cuitlatecs. It is also home to communities of Afro-Mexicans in the Costa Chica region. The state was named after Vicente Guerrero, one of the most prominent leaders in the Mexican War of Independence and the second President of Mexico. It is the only Mexican stat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mezcalera Ocean
The Mezcalera Ocean is an inferred ancient ocean preserved in rocks in western Mexico. The Mezcalera oceanic plate was likely subducted and consumed into the mantle allowing the Guerrero Terrane to be accreted to western Mexico in the Early Cretaceous The Early Cretaceous (geochronology, geochronological name) or the Lower Cretaceous (chronostratigraphy, chronostratigraphic name) is the earlier or lower of the two major divisions of the Cretaceous. It is usually considered to stretch from 143.1 .... Speculative reconstructions suggest that Mezcalera plate experienced slab rollback in the east along the Mexican Craton and simultaneously subducted in the west beneath the Guerrero Terrane. See also * List of ancient oceans References {{reflist Historical oceans Oceanography Jurassic Mexico ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
